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Structural Adhesives and NVH

Selector Guide

Loctite

structural adhesives are engineered to meet a wide

range of industrial bonding and assembly requirements. They are
available in several formulations including:

•

Two-part acrylics

•

One- and two-part epoxies

•

Polyurethanes

•

Two-step acrylics

•

NVH

Our structural adhesives are designed to provide superior bond
strength, long life and dependability on a variety of substrates
and applications including:

1. Metal Bonding –

optimized to meet the demands of

today’s total lower cost, high strength and lighter weight
metal fabricating requirements.

2. Plastic and Composite Bonding –

for the toughest,

most durable bond strength on composites and plastics,
including difficult to bond polyolefins.

3. Multiple Surface Bonding –

for excellent bond strength

when joining dissimilar materials, substrates and
surface types.

4. Magnet Bonding –

for the fastest, most durable

bonds on ferrite, alnico and neodymium iron boron
permanent magnets.

5. NVH - Noise Vibration & Harshness –

highly

engineered, custom solutions to help achieve noise and
vibration reduction levels in applications for Ag-Con
specialty vehicles and appliances.

Loctite

structural adhesives are available in easy-to-use

packages for hand-held, manual and semi-automated
applications, including cartridges, syringes, soft-squeeze
bottles and dual cartridges for two-part formulations. Loctite

structural adhesives are also offered in larger packages such as
5- or 55-gallon pails for high volume dispensing and automated
assembly operations.

All Loctite

structural adhesives are easily applied with Loctite

dispensing equipment. Configurations include manual or
pneumatic, portable or stationary, small or large package
systems and pressure-time or volumetric dispense systems.

For reliable structural adhesives, choose Loctite

, a name

synonymous with the highest quality, superior technical support
and exceptional value for over 60 years.

LEADING THE WAY IN

STRUCTURAL ADHESIVES

TABLE OF CONTENTS

Selecting a Structural Adhesive

Structural Bonding Overview . . . . . . . . . . . . . . . . 2

Adhesive Joint Design . . . . . . . . . . . . . . . . . . . . . . 4

Design Considerations. . . . . . . . . . . . . . . . . . . . . . 6

Technology Considerations. . . . . . . . . . . . . . . . . . 7

Chemistries & Products

Two-Part Acrylics . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Two-Part Acrylic Adhesives. . . . . . . . . . . . . . . . . 10

Epoxies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Epoxy Adhesives. . . . . . . . . . . . . . . . . . . . . . . . . . .14

Polyurethanes. . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Polyurethane Adhesives . . . . . . . . . . . . . . . . . . . .18

NVH (Noise, Vibration & Harshness). . . . . . . . . 20

Two-Step Acrylics. . . . . . . . . . . . . . . . . . . . . . . . . 24

Two-Step Acrylic Adhesives . . . . . . . . . . . . . . . . 26

Equipment

Dispensing Equipment . . . . . . . . . . . . . . . . . . . . 28

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LOCTITE

STRUCTURAL ADHESIVES ARE AS STRONG AS OVERLAP WELDS,

2X STRONGER THAN BOLTS AND EASIER ON THE BOTTOM LINE.

Previous process. Note the
proliferation of rivet heads.

Vibration response test for truck
utility door with welded vertical
steel hat section. Red/yellow
indicates high levels of vibration.

With Loctite

Structural Adhesive

process. Note the smooth finish.

Test results for truck utility door using
Henkel 27006 expandable material
instead of steel hat section. Blue/green
indicates low levels of vibration.

Before

After

Before

After

COST

STRENGTH

500

$0.50

$1.00

$1.50

$2.00

$2.50

$3.00

$3.50

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

Loctite

Adhesive

Shear Stress (lbf)

$1.44

$2.52

$2.60

$3.85

$2.20

1/4" Nut & Bolt

Pop Rivets

Double-sided Tape

Overlap Weld

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WHY USE A HENKEL ADHESIVE
FOR STRUCTURAL BONDING?

The Henkel range of structural bonding products offers a wide
choice of solutions to meet the different requirements and
conditions that apply to industrial design and construction.

BONDING BASICS

Adhesive bonding is a process in which two similar or dissimilar
materials are solidly and permanently assembled using
an adhesive.

To achieve the optimal bonding result, the following
prerequisites must be met:

•

Compatibility of the adhesive with the materials to
be bonded

•

Compatibility of the adhesive with the
specified requirements

•

Correct processing of the adhesive

ADVANTAGES OF BONDING COMPARED TO
CONVENTIONAL JOINING METHODS

More uniform stress distribution over the entire bond face:

This has a very positive effect on the static and dynamic strength
achieved. Where welding and riveting result in localized stress
peaks, adhesive bonding achieves uniform distribution and
absorption of stress loads.

No change in surface and texture of the joined materials:

Welding temperatures may change the texture and, therefore,
the mechanical properties of materials. In addition, welding,
riveting and fastening all affect the visual appearance of
the parts.

Weight saving:

Adhesives are particularly popular for light-

weight constructions, where thin-walled parts (wall thickness
< 0.5 mm) must be joined.

Sealed joints:

Adhesives also act as sealants, preventing loss

of pressure or liquids, blocking the penetration of condensation
water and protecting against corrosion.

Joining dissimilar materials and reducing the risk of
corrosion:

The adhesive forms an insulating film to prevent

contact corrosion when different types of metals are joined. It
also acts as electrical and thermal insulator.

CHOOSING THE RIGHT HENKEL STRUCTURAL
BONDING ADHESIVE

The following key points should be observed for the design of
bonded joints:

•

The surfaces to be joined should be as large as possible
for maximum load transmission capability

•

Forces acting on the joint should be distributed across the
entire bond line

FOR DEMANDING REQUIREMENTS

STRUCTURAL BONDING OVERVIEW

When applied, adhesives provide “bridges” between

substrates, resulting in uniform stress distribution.

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AVAILABLE TECHNOLOGIES

EPOXIES

•

Rigid bonding

•

Room temperature or heat cure

•

Capability to fill large gaps

•

Very high strength

•

Very good chemical resistance

ACRYLICS

•

Rigid to slightly flexible bonding

•

Room temperature cure

•

Very high strength

•

Good environmental resistance

•

Very high impact strength

•

Good fatigue resistance

POLYURETHANES

•

Slightly flexible bonding

•

Room temperature cure

•

Capability to fill large gaps

•

High strength

•

Good environmental resistance

One-Part

Epoxies

Two-Part

Epoxies

Elongation (%)

Structural

Bonding

Shear Str

ength (psi)

Polyurethanes

Silicones

One- and Two-Part

Acrylics

Solvent

Based

Hot Melt

Butyl

NOTE:

For flexible bonding options please refer to our Elastomeric Adhesives and Sealants Brochure (LT-6556) or our Adhesives Sourcebook (LT-3355).

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BUTT JOINT: A butt joint is formed by bonding two objects end to end.

ADHESIVE JOINT DESIGN

INTRODUCTION

In this section, the terms and concepts related to joint design are
divided into three categories which include:

•

Types of Joints

•

Joint Stress Distribution

•

Design Guidelines

Before looking at different types of joints, a few terms need to
be explained:

Joint:

A joint is the location where an adhesive joins

two substrates.

Joint Geometry:

Joint geometry refers to the general shape

of an adhesive bond. Is the shape of the bond long and
narrow, short and wide, thick or thin?

TYPES OF JOINTS

The specific types of joints which will be examined in this
section include:

•

Lap/Overlap

•

Scarf

•

Offset

•

Strap/Double Strap

•

Butt

•

Cylindrical

OFFSET JOINT: The offset joint is very similar to the lap joint.

LAP/OVERLAP JOINT: A lap joint, also called an overlap joint, is formed
by placing one substrate partially over another substrate.

STRAP JOINT (SINGLE OR DOUBLE): A strap joint is a combination
overlap joint with a butt joint.

SCARF JOINT: A scarf joint is an angular butt joint. Cutting the joint
at an angle increases the surface area.

CYLINDRICAL JOINT: A cylindrical joint uses a butt joint to join two
cylindrical objects.

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JOINT STRESS DISTRIBUTION

Joint stress distribution is the location of stresses within a bond.

Stress:

Usually expressed as Newtons per square meter

(N/M

), which is equivalent to a pascal (Pa) In the English

system, stress is normally expressed in pounds per
square inch (psi).

TYPES OF STRESSES

There are several types of stresses commonly found in adhesive
bonds which include:

•

Shear

•

Peel

•

Tensile

•

Cleavage

•

Compressive

SHEAR STRESS: A shear stress results in two surfaces sliding over
one another.

TENSION STRESS DISTRIBUTION: When a bond experiences a tensile
stress, the joint stress distribution is illustrated as a straight line. The
stress is evenly distributed across the entire bond. Tensile stress also
tends to elongate an object.

PEEL STRESS: A peel stress occurs when a flexible substrate is being
lifted or peeled from the other substrate. NOTE: The stress is concentrated
at one end.

CLEAVAGE STRESS: A cleavage stress occurs when rigid substrates are
being opened at one end. NOTE: The stress is concentrated at one end.

COMPRESSION STRESS DISTRIBUTION: When a bond experiences a
compressive stress, the joint stress distribution is illustrated as a straight
line. The stress is evenly distributed across the entire bond.

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DESIGN CONSIDERATIONS

Engineers must have a good understanding of how stress is
distributed across a joint which is under an applied force. There
are several design guidelines which should be considered when
designing an adhesive joint.

MAXIMIZE SHEAR/MINIMIZE PEEL
AND CLEAVAGE

Note from the stress distribution curve for cleavage and peel,
that these bonds do not resist stress very well. The stress is
located at one end of the bond line. Whereas, in the case of
shear, both ends of the bond resist the stress.

MAXIMIZE COMPRESSION/MINIMIZE TENSILE

Note from the stress distribution curve for compression and
tension, that stress was uniformly distributed across the
bond. In most adhesive films, the compressive strength is
greater than the tensile strength. An adhesive joint which is
feeling a compressive force is less likely to fail than a joint
undergoing tension.

JOINT WIDTH VS. OVERLAP

Note from the shear stress distribution curve, that the ends
of the bond receives a greater amount of stress than does
the middle of the bond. If the width of the bond is increased,
stress will be reduced at each end and the overall result is a
stronger joint.

In this same overlap joint, if the overlapping length is greatly
increased, there is little, if any, change in the bond strength.
The contribution of the ends is not increased. The geometry of
the ends has not changed, thus their contribution to the bond
strength has not changed.

As a general rule, increase the joint width rather than the
overlap area (“wider is better”).

0.5"

1.0"

Bond Area = 1 sq. in.

Side View

FORCE = Shear

JOINT AREA – WIDTH VS. OVERLAP

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TECHNOLOGY CONSIDERATIONS

PERFORMANCE CONSIDERATIONS

ADHESIVE CATEGORY

EPOXIES

URETHANES

2-PART ACRYLICS

2-STEP ACRYLICS

BENEFITS

Wide range of formulations

Excellent toughness/ flexibility

Good impact resistance/

flexibility

Good impact

resistance/no-mix

LIMITATIONS

Mixing required

Sensitive to moisture

Mixing required

Primer required

TEMPERATURE RESISTANCE

Typical for the category

-65ºF to 180ºF (-54˚C to 82˚C)

-65ºF to 250ºF (-54˚C to 121˚C) -65ºF to 250ºF (-54˚C to 121˚C) -65ºF to 300ºF (-54˚C to 149˚C)

Highest rated product

400ºF (204˚C)

300ºF (149˚C)

250ºF (121˚C)

400ºF (204˚C)

ENVIRONMENTAL RESISTANCE

Polar Solvents

(EX.: H

O, ETHYLENE GLYCOL, ISOPROPYL

ALCOHOL [IPA], ACETONE)

Very Good

Good

Nonpolar Solvents

(EX. MOTOR OIL, TOLUENE, GASOLINE, ATF)

Excellent

Good

Very Good

ADHESION TO SUBSTRATES

Metals

Excellent

Good

Excellent

Plastics

Fair

Very Good

Excellent

Fair

Glass

Excellent

Good

Excellent

Rubber

Fair

Good

Poor

Wood

Very Good

Fair

Good

OVERLAPPING SHEAR STRENGTH

High

Medium

High

PEEL STRENGTH

Medium

High

Medium

TENSILE STRENGTH

High

Medium

High

ELONGATION/FLEXIBILITY

Low

High

Medium

HARDNESS

Rigid

Soft

Semirigid

PROCESS CONSIDERATIONS

ADHESIVE CATEGORY

EPOXIES

URETHANES

2-PART ACRYLICS

2-STEP ACRYLICS

NUMBER OF COMPONENTS

1 or 2

CURE TEMPERATURE

Room temperature

or heat cure

Room temperature

or heat cure

Room temperature

or heat cure

Room temperature

or heat cure

FIXTURE TIME

Average

20 minutes

25 minutes

20 minutes

5 minutes

Fastest

3 to 5 minutes

5 minutes

3 to 5 minutes

30 seconds

FULL CURE TIME

12 to 24 hours

24 hours

GAP FILL

Ideal (in inches)

0.004 to 0.006

0.010 to 0.040

0.002 to 0.004

Maximum (in inches)

0.125

0.5

0.040

DISPENSING/MIXING

EQUIPMENT REQUIRED

YES

PLEASE NOTE:

This chart should not be used to specify products without specific testing. It is recommended that you conduct on-part testing to ensure product performance

before specifying any adhesive.

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TWO -PART ACRYLICS

ADVANTAGES

•

High cure through depth

•

Room temperature cure

•

High peel and impact strength

•

Good environmental resistance

•

Bonds to moderately contaminated surfaces

•

Cure can be accelerated with heat

CONSIDERATIONS

•

Slow fixture times (5 to 30 minutes)

•

Waste associated with static mix process

•

May have strong odor

GENERAL DESCRIPTION

Two-part acrylic adhesives consist of a resin and an activator
both of which are normally high-viscosity liquids typically
in the range of 5,000 to 100,000 cP. While the activator is
chemically similar to that of a two-step acrylic, it is delivered as
a high viscosity liquid that is normally similar in viscosity to the
resin. The two components are mixed just prior to dispensing
at mix ratios ranging from 1:1 and 10:1 by volume. By mixing
the activator and resin, two-part acrylics have much larger
cure through depths than two-step acrylics that only have the
activator applied to the surface.

To maintain the ratio of the resin and activator equipment
is required. For small to moderate volume applications, the
adhesive is packaged in a dual cartridge that sets the ratio.
For high volume applications, meter mix dispense equipment
is used.

The resin and activator are mixed by passing them through a
static mix tip which allows the material to be dispensed as a
homogenous one-part material. Since the mixed adhesive is
curing in the mix tip, there will be trade off between the open
time and the fixture time. Faster curing products will require that
mix tips be changed after shorter idle times.

Two-part acrylics can also be accelerated with heat, but care
must be taken when determining the cure temperature.

PROCESS NOTES

Properly prime the mix

tip by dispensing a small amount

before attaching the mix tip (also called “bumping”) to
ensure both sides are flowing then dispensing several grams
after attaching the tip to prime the mix tip before creating
production parts.

Audit to ensure proper mixing.

Many two-part acrylics are

color coded to allow for visual inspection of the mixing. For
example, a blue resin and yellow activator would result in
a green product. There should not be pockets of unmixed
(i.e. yellow or blue) product that can be visually observed.

Use equipment designed for two-part acrylics.

Two-part

acrylics are very reactive systems that may cure when contacting
active metals such as steel, copper or brass. When dispensing
from a meter-mix dispense system, two-part acrylics must be
dispensed from inactive systems such as stainless steel. Care
should be taken not to replace fitting during maintenance with
active metals

Evaluate peak exotherm for large volume applications.

Two-part acrylics cure very rapidly via an exothermic reaction
that releases heat. When curing large volumes, the heat can be
sufficient to warp plastic parts or degrade the adhesive.

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Structural Adhesives and NVH Selector Guide |

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TWO -PART ACRYLIC ADHESIVES

Loctite

H8600

™

Structural

Adhesive

Galvanized Steel

Bonder

Excellent shear

strength on steel and

aluminum. Especially

designed for severe

environments.

P/N

Package Size

38762

400 ml dual
cartridge

38760*

5 gallon pail,
adhesive

38761*

5 gallon pail,
activator

Loctite

H8500

™

Structural

Adhesive

Ultra-Tough Steel

Bonder

Excellent peel

strength on steel and

aluminum. Contains

30 mil spacer beads

to prevent excessive

squeeze-out of

adhesive due to over-

clamping.

P/N

Package Size

827608  490 ml dual
cartridge
40888*  5 gallon pail,
activator
40889*  5 gallon pail,
adhesive

Loctite

H8100

™

Structural

Adhesive

Aluminum Bonder

Exhibits excellent

strength on

aluminum.

P/N

Package Size

1056942 50 ml dual
cartridge
1056943 490 ml dual
cartridge

Loctite

H8110

™

Structural

Adhesive

Ultra-Fast

Aluminum Bonder

Aluminum bonder

fixtures in 5 minutes.

P/N

Package Size

1371355 50 ml dual
cartridge
1371361 490 ml dual
cartridge

* Made-to-order item.
† Working time = maximum

time before assembly of parts
to ensure proper wetting.

Steel.

High density polyethylene.

Aluminum.

Galvanized steel.

Grit-blasted mild steel.

Polyethylene.

Loctite

H8000

™

Structural

Adhesive

Tough Metal

Bonder

Exhibits excellent

peel strength on

multiple substrates,

especially aluminum.

P/N

Package Size

996453 50 ml dual
cartridge
36160

490 ml dual

cartridge
35939* 35 lb. pail,
adhesive
35940* 45 lb. pail,
activator

Your Application

Loctite

Solution

Product Description

Loctite

H4500

™

Structural

Adhesive

Fast Work Time

High strength

structural adhesive

for metals. Fixtures

in 15 minutes. With

color mix indication.

P/N

Package Size

996512 50 ml dual
cartridge
83041

490 ml dual

cartridge

ARE YOU BONDING METALS OR PLASTICS/COMPOSITES?

Metals

Plastics/Composites

Are you bonding polyolefins?

General Metal Bonders

Galvanized

Steel

Aluminum

Yes

Longer

Work Time

Fast

Work Time

Fast

Work Time

Ultra-Fast

Work Time

Clear Bondline

Fast

Work Time

Longer

Work Time

High

Toughness

High Strength

Fast

Work Time

Longer

Work Time

H8000

™

H4500

™

H8600

™

H8500

™

H8100

™

H8110

™

H5004

™

H3300

™

H3101

™

H4800

™

H3000

™

3035

™

3034

™

Color

Green

Grey

Blue

Grey

Green

Transparent

Yellow

Cream

Light Yellow

Cream

Off-White

Translucent

Viscosity (cP)

190,000

45,000

86,000

60,000

185,000

200,000

18,000

110,000

75,000

50,000

45,000

14,000

63,000

Mix Ratio

10:1

2:1

10:1

1:1

10:1

1:1

10:1

Work Time

†

(min.)

1.5

Shear Strength

(psi)

3,140

3,100

3,355

3,380

3,090

2,475

3,100

3,350

2,510

3,000

4,150

1,658

1,160

Impact Strength

(J)

N/A

5.8

Peel Strength

(pli)

• Specially formulated

to provide tough, long-
lasting bonds to most
surfaces, including
steel, galvanized steel,
aluminum, sheet metal,
stainless steel, plastics
and composites

• Capable of reducing or

replacing the need for
threaded fasteners, welds
or rivets, resulting in a
lower cost assembly

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Loctite

3035

™

Structural Adhesive

Fast Fixture

A fast-fixturing acrylic

adhesive designed to

bond low-energy plastic

substrates without any

surface preparation.

P/N

Package Size

1677288 50 ml dual

cartridge

Loctite

3034

™

Structural Adhesive

Toughened

Extended open time

allows for adjustment

of parts. Excellent peel

and shear strength on

polyethylene plastics.

P/N

Package Size

960973

490 ml dual
cartridge

Loctite

H3300

™

Structural Adhesive

Fast Fixture

A non-sag, fast-fixturing

structural adhesive for

bonding a variety of

substrates.

P/N

Package Size

83020

50 ml dual
cartridge

83019

400 ml dual
cartridge

83024*

40 lb. pail,
adhesive

83022*

40 lb. pail,
activator

Loctite

H3101

™

Structural Adhesive

Extended Work Life

A medium viscosity

structural adhesive ideal

for bonding a variety of

substrates.

NSF/ANSI 61 Certified.

P/N

Package Size

83007

50 ml dual
cartridge

83006

400 ml dual
cartridge

Loctite

H4800

™

Structural Adhesive

Toughened

Excellent peel and

impact resistance.

Provides high

bond strengths on

composites.

P/N

Package Size

996515

50 ml dual
cartridge

83045

490 ml dual
cartridge

Loctite

H3000

™

Structural Adhesive

High Strength

A low viscosity adhesive

which exhibits high

bond strength on a

variety of substrates.

P/N

Package Size

83001

50 ml dual
cartridge

83000

400 ml dual
cartridge

Loctite

H5004

™

Structural Adhesive

Clear Bondline

A fast-setting,

toughened adhesive

for metals and plastics

that creates a virtually

transparent bondline.

P/N

Package Size

1384596 50 ml dual

cartridge

ARE YOU BONDING METALS OR PLASTICS/COMPOSITES?

Metals

Plastics/Composites

Are you bonding polyolefins?

General Metal Bonders

Galvanized

Steel

Aluminum

Yes

Longer

Work Time

Fast

Work Time

Fast

Work Time

Ultra-Fast

Work Time

Clear Bondline

Fast

Work Time

Longer

Work Time

High

Toughness

High Strength

Fast

Work Time

Longer

Work Time

H8000

™

H4500

™

H8600

™

H8500

™

H8100

™

H8110

™

H5004

™

H3300

™

H3101

™

H4800

™

H3000

™

3035

™

3034

™

Color

Green

Grey

Blue

Grey

Green

Transparent

Yellow

Cream

Light Yellow

Cream

Off-White

Translucent

Viscosity (cP)

190,000

45,000

86,000

60,000

185,000

200,000

18,000

110,000

75,000

50,000

45,000

14,000

63,000

Mix Ratio

10:1

2:1

10:1

1:1

10:1

1:1

10:1

Work Time

†

(min.)

1.5

Shear Strength

(psi)

3,140

3,100

3,355

3,380

3,090

2,475

3,100

3,350

2,510

3,000

4,150

1,658

1,160

Impact Strength

(J)

N/A

5.8

Peel Strength

(pli)

Structural Adhesives and NVH Selector Guide |

NEW

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ADVANTAGES

•

Wide variety of formulations available

•

High adhesion to many substrates

•

Good toughness

•

Cure can be accelerated with heat

•

Excellent depth of cure

•

Superior environmental resistance

CONSIDERATIONS

•

Two-part systems require mixing

•

One-part systems require heat cure

•

Long cure and fixture times

GENERAL DESCRIPTION

Epoxy adhesives are supplied as one- and two-part systems
with viscosities that range from a few thousand centipoise
to thixotropic pastes. Upon cure, epoxies form tough, rigid
thermoset polymers with high adhesion to a wide variety of
substrates and superior environmental resistance. A major
advantage of epoxies is that there are a wide variety of
commercially available resins, hardeners and fillers for epoxies
that allows the performance characteristics of epoxies to be
tailored to the needs of almost any application.

When using a one-part heat-cure system, the resin and a latent
hardener are supplied already mixed and when stored typically
need to be refrigerated or frozen. By heating the system, the
latent hardener is activated causing cure to initiate. The epoxy
will normally start to cure rapidly at temperatures of 212°F to
257°F (100°C to 125°C) and cure times of 30 to 60 minutes are
typical. Heat curing also generally improves bond strengths,
thermal resistance and chemical resistance.

When using a two-part system, the resin and hardener are
packaged separately and are mixed just prior to use. This allows
more active hardeners to be used so that the two-part epoxies
will rapidly cure at ambient conditions.

Two-part systems are normally mixed by passing them through a
static mix tip. This allows the two-part material to be dispensed
as a single homogenous liquid where it exits the mix tip.

Since the mixed adhesive is curing in the mix tip, the adhesive’s
viscosity and performance changes during idle times and the mix
tip must be changed after the idle time exceeds the adhesive’s
open time. This creates a trade off between fixture time and
open time. Faster curing products will require that mix tips be
changed after shorter idle times.

To maintain the ratio of the resin and activator, equipment
is required. For small to moderate volume applications, the
adhesive is normally packaged in a dual cartridge that sets
the ratio. For high volume applications, meter mix dispense
equipment is recommended.

PROCESS NOTES

Properly prime the mix tip

by dispensing a small amount

before attaching the mix tip (also called “bumping”) to
ensure both sides are flowing, then dispense several grams
after attaching the tip to prime the mix tip before creating
production parts.

Significant exotherms can occur for large volume
applications.

The curing reaction of the epoxy can release a

great deal of heat (exotherm) and can result in a significant
temperature rise in the adhesive.

Ensure that meter mix systems are on-ratio and air free.

To maintain consistent performance when using a meter mix
dispense system, it is critical that the equipment is at the
required mix ratio. This should be audited periodically with QC
tests. Air in the equipment is a frequent cause of the equipment
becoming off-ratio. Care should be taken not to introduce air in
the equipment when changing packages.

Induction curing typically offers the fastest heat cures.

Induction heats ferrous components much faster than
convection or infrared ovens.

EPOXIES

| Structural Adhesives and NVH Selector Guide

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Structural Adhesives and NVH Selector Guide |

Loctite-GBS-4809-html.html

EPOXY ADHESIVES

Loctite

E-40EXP

™

Hysol

Epoxy

Potting Compound

Explosion Proof/

Chemical Resistant

An epoxy designed

for potting electrical

motors used in

hazardous locations.

Compliant with UL™-

674 for explosion-

proof electric motors.

Excellent chemical

resistance.

P/N

Package Size

1511184* 50 ml dual

cartridge

1511653 200 ml dual

cartridge

1511896 5 gallon pail -

part A

1511897 5 gallon pail -

part B

Loctite

E-05MR

™

Hysol

Epoxy

Adhesive

Moisture Resistant

Clear, fast-fixturing

epoxy that provides

excellent moisture

resistance and

exceptional

toughness.

P/N

Package Size

1086598 50 ml dual

cartridge

1086599* 400 ml dual

cartridge

1087602* 5 gallon pail,

resin

1087603* 5 gallon pail,

hardener

Loctite

E-05CL

™

Hysol

Epoxy

Adhesive

Flexible

A clear, flexible, high-

peel, low-odor epoxy

with a 3-minute

work life.

P/N

Package Size

29299

50 ml dual
cartridge

29301

400 ml dual
cartridge

29302*

5 gallon pail,
resin

29303*

5 gallon pail,
hardener

* Made-to-order item.

Grit blasted steel.

Aluminum.

Loctite

E-00NS

™

Epoxy Adhesive

Non-Sag

A fast-fixturing,

thixotropic, non-sag

epoxy which cures at

room temperature to

form a translucent,

rigid and machinable

bondline. Well suited

for use on vertical

surfaces.

P/N

Package Size

29294

50 ml dual
cartridge

29295

200 ml dual
cartridge

29296

400 ml dual
cartridge

Loctite

E-30CL

™

Hysol

Epoxy

Adhesive

Clear

An ultra-clear, low-

viscosity, impact-

resistant epoxy with

a 30-minute work

life. An excellent

glass bonder. Exhibits

exceptional chemical

resistance.

P/N

Package Size

29329

50 ml dual
cartridge

29330

200 ml dual
cartridge

29331

400 ml dual
cartridge

Loctite

E-60NC

™

Hysol

Epoxy

Adhesive

Noncorrosive/

Potting

An electronics-grade

potting compound

with a 60-minute

work life. Black,

opaque, low viscosity

with excellent cure-

through depth.

P/N

Package Size

29324

50 ml dual
cartridge

29325  200 ml dual
cartridge
29326  400 ml dual
cartridge
29327*

5 gallon pail,
resin

29328*

5 gallon pail,
hardener

Your Application

Loctite

Solution

• Bond a wide variety of

materials, such as metal,
ceramic and plastic

• Available in a variety

of formulations and
performance capabilities,
including fast cure,
superior moisture
resistance, ease of
dispense, high toughness,
and a resistance to a wide
range of chemicals

Product

Description

DO YOU NEED A ONE-PART OR TWO-PART EPOXY?

Two-Part

One-Part

Do you need the product to fixture in less than 15 minutes at room temperature?

Yes

Potting

High Toughness

Moisture

Resistant

Flexible

Non-Sag

Clear

Explosion

Proof

Non-

Corrosive

Short

Work Life

Medium

Work Life

Long

Work Life

Flexible

Ultra-

Toughened

High

Toughness

General-

Purpose

E-05MR

™

Hysol

E-05CL

™

Hysol

E-00NS

™

Hysol

E-30CL

™

Hysol

E-40EXP

™

Hysol

E-60NC

™

Hysol

E-20HP

™

Hysol

E-60HP

™

Hysol

E-120HP

™

Hysol

E-90FL

™

Hysol

E-30UT

™

Hysol

5089

™

Hysol

E-214HP

™

Hysol

Color

Clear

Translucent

Clear

Grey

Black

Off-White

Amber

Opaque Grey

Purple

Yellow

Viscosity (cP)

25,000

2,500

100,000

10,000

24,000

8,000

30,000

45,000

30,000

40,000

65,000

Paste

Mix Ratio

1:1

2:1

1:1

2:1

1:1

2:1

N/A

Work Life (minutes)

120

N/A

Fixture Time (minutes)

>180

N/A

180

120

240

180

>180

180

N/A

Room T emperature

Cure Time (hours)

20 min. @

350°F (177°C)

2 @ 302°F

(150°C)

Shear Strength

(psi)

3,360

1,430

1,600

3,100

3,000

2,630

3,270

4,320

4,300

810

4,200

2,900

4,820

Temperature

Resistance

200°F (93°C)

180°F (80°C)

180°F (82°C)

250°F

(121°C)

250°F

(121°C)

250°F

(121°C)

250°F (121°C)

350°F (177°C)

300°F (149°C)

| Structural Adhesives and NVH Selector Guide

NEW

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Loctite

E-90FL

™

Hysol

Epoxy

Adhesive

Flexible

A grey, impact-resistant,

toughened epoxy with a

90-minute work life.

P/N

Package Size

29309

50 ml dual
cartridge

29311

400 ml dual
cartridge

Loctite

E-20HP

™

Hysol

Epoxy

Adhesive

High Performance

A high strength epoxy

with a 20-minute work

life. Off-white, toughened,

high peel, high shear.

P/N

Package Size

29314

50 ml dual

cartridge

29315

200 ml dual

cartridge

29316

400 ml dual

cartridge

29317

5 gallon pail,

resin
29318 5 gallon pail,

hardener

Loctite

E-60HP

™

Hysol

Epoxy

Adhesive

A high strength epoxy

with a 60-minute work

life. Off-white, high-peel,

high-shear.

P/N

Package Size

29319

50 ml dual

cartridge

29321

400 ml dual

cartridge

Loctite

E-120HP

™

Hysol

Epoxy

Adhesive

An amber, non-sag,
aerospace grade epoxy
with an extended open
time to allow for the
adjustment of large
parts.

P/N

Package Size

29353

50 ml dual

cartridge

29354

200 ml dual

cartridge

29355

400 ml dual

cartridge

29356* 5 gallon pail,
resin
29357* 5 gallon pail,

hardener

Loctite

E-30UT

™

Hysol

Epoxy

Adhesive

Ultra-Tough

An epoxy that provides

exceptional fracture

toughness characteristics

for the most demanding

structural bonding

requirements.

P/N

Package Size

1078234

50 ml dual

cartridge

1078235

400 ml dual

cartridge

Terokal

5089

™

Structural Adhesive

High Performance

A toughened heat
curable epoxy offering
high-shear strength and
extremely good peel and
impact resistance. Can
be spot-welded through
and is compatible
with most paint-bake
processes.

P/N

Package Size

1182757

300 ml

cartridge

1182761 5 gal. pail

1182927 55 gal. drum

Loctite

E-214HP

™

Hysol

Epoxy

Adhesive

General-Purpose/

Heat Cure

A one-component, acid-

free, heat cure epoxy.

Light grey, temperature

resistant, high strength,

non-sag. Noncorrosive

to sensitive parts.

P/N

Package Size

29339

30 ml

cartridge

29340

300 ml

cartridge

DO YOU NEED A ONE-PART OR TWO-PART EPOXY?

Two-Part

One-Part

Do you need the product to fixture in less than 15 minutes at room temperature?

Yes

Potting

High Toughness

Moisture

Resistant

Flexible

Non-Sag

Clear

Explosion

Proof

Non-

Corrosive

Short

Work Life

Medium

Work Life

Long

Work Life

Flexible

Ultra-

Toughened

High

Toughness

General-

Purpose

E-05MR

™

Hysol

E-05CL

™

Hysol

E-00NS

™

Hysol

E-30CL

™

Hysol

E-40EXP

™

Hysol

E-60NC

™

Hysol

E-20HP

™

Hysol

E-60HP

™

Hysol

E-120HP

™

Hysol

E-90FL

™

Hysol

E-30UT

™

Hysol

5089

™

Hysol

E-214HP

™

Hysol

Color

Clear

Translucent

Clear

Grey

Black

Off-White

Amber

Opaque Grey

Purple

Yellow

Viscosity (cP)

25,000

2,500

100,000

10,000

24,000

8,000

30,000

45,000

30,000

40,000

65,000

Paste

Mix Ratio

1:1

2:1

1:1

2:1

1:1

2:1

N/A

Work Life (minutes)

120

N/A

Fixture Time (minutes)

>180

N/A

180

120

240

180

>180

180

N/A

Room Temperature

Cure Time (hours)

20 min. @

350°F (177°C)

2 @ 302°F

(150°C)

Shear Strength

(psi)

3,360

1,430

1,600

3,100

3,000

2,630

3,270

4,320

4,300

810

4,200

2,900

4,820

Temperature

Resistance

200°F (93°C)

180°F (80°C)

180°F (82°C)

250°F

(121°C)

250°F

(121°C)

250°F

(121°C)

250°F (121°C)

350°F (177°C)

300°F (149°C)

Structural Adhesives and NVH Selector Guide |

NEW

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POLYURETHANES

ADVANTAGES

•

Extremely tough

•

Good resistance to solvents

•

High cohesive strength

•

Good impact resistance

•

Good abrasion resistance

CONSIDERATIONS

•

Mixing required for two-part polyurethanes

•

Primer may be needed for adhesion to some substrates

•

Limited high temperature use

GENERAL DESCRIPTION

Polyurethane adhesives are supplied as one- and two-part
systems which range in viscosity from self-leveling liquids to
non-slumping pastes. They cure to form thermoset polymers
with good solvent and chemical resistance. They are extremely
versatile and can range in cured form from extremely soft
elastomers to rigid, extremely hard plastics. Polyurethanes offer
a good blend of cohesive strength and flexibility that makes
them very tough, durable adhesives. They bond well to most
unconditioned substrates, but may require the use of solvent-
based primers to achieve high-bond strengths. They offer good
toughness at low temperatures, but typically degrade in strength
after long-term exposure over 302°F (150°C).

Since the cure of one-part, moisture-curing polyurethanes is
dependent on moisture diffusing through the polymer, the
maximum depth of cure that can be achieved in a reasonable
time is limited at approximately 0.375" (9.5 mm). Two-part
systems, on the other hand, offer unlimited depth of cure.

Two-part system are normally mixed by passing them through a
static mix tip. This allows the two-part material to be dispensed
as a single homogenous liquid where it exits the mix tip. Since
the mixed adhesive is curing in the mix tip, the adhesive’s
viscosity and performance changes during idle times and the mix

tip must be changed after the idle time exceeds the adhesive’s
open time. This creates a trade off between fixture time and
open time. Faster curing products will require that mix tips be
changed after shorter idle times.

To maintain the ratio of the resin and activator, equipment
is required. For small to moderate volume applications, the
adhesive is packaged in a dual cartridge that sets the ratio.
For high volume applications, meter mix dispense equipment
is used.

PROCESS NOTES

Properly prime the mix tip

by dispensing a small amount

before attaching the mix tip (also called “bumping”) to
ensure both sides are flowing, then dispense several grams
after attaching the tip to prime the mix tip before creating
production parts.

Audit to ensure proper mixing.

When setting up a new

process, the mix tip should be evaluated in application-
representative conditions, including planned downtimes to
ensure proper mixing. This should be audited periodically.

Significant exotherms can occur for large volume
applications.

The curing reaction of the epoxy can release a

great deal of heat (exotherm) and can result in a significant
temperature rise in the adhesive.

Protect the adhesive from moisture.

Polyurethanes will absorb

moisture from the ambient atmosphere, which may cause
premature gelling or bubbling of the adhesive. As a result, bulk
system must be designed with dyers to prevent this.

| Structural Adhesives and NVH Selector Guide

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Structural Adhesives and NVH Selector Guide |

Loctite-GBS-4809-html.html

POLYURETHANE ADHESIVES

Loctite

UK 1351 B25

™

Urethane Adhesive

Composite Bonder

A highly toughened, GL-approved, two-part

urethane for composites bonding. Non-sag with

excellent fatigue and environmental resistance.

P/N

Package Size

1667557

400 ml cartridge

Your Application

Loctite

Solution

Product Description

• Bond a wide variety

of materials, including
most metals, plastics and
composites

• Exhibit superior moisture

and humidity resistance, as
well as good toughness and
flexibility

* Made-to-order item.
** Steel.
† Grit-blasted steel.

Loctite

UK 1366 B10

™

Urethane Adhesive

Metal Bonder

A highly flexible, medium fixture structural

bonder that has good adhesion to metals and

plastics. Excellent environmental resistance and

impact strength.

P/N

Package Size

1668032

415 ml cartridge

WHAT ARE YOU BONDING?

Composites

Metal

Plastic

General-Purpose

Flame Resistance Required

UK 1351 B25

™

UK 1366 B10

™

U-09FL

™

U-05FL

™

3364

™

Color

Green

Clear

Off-White

Black

Viscosity (cP)

29,000

34,000

5,000

100,000

5,000

Mix Ratio

2:1

4:1

1:1

1:2

Work Life (minutes)

45 seconds

Fixture Time (minutes)

120

180

Cure Time (hours)

Shear Strength** (psi)

2,360

1,550

1,460

930

†

2,800

†

NEW

| Structural Adhesives and NVH Selector Guide

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Loctite

U-09FL

™

Hysol

Urethane Adhesive

Plastic Bonder

A two-part, high performance urethane adhesive

for plastic bonding with a 10-minute work life.

Clear, impact resistant, high peel.

P/N

Package Size

29460

50 ml dual cartridge

29462*

400 ml dual cartridge

Loctite

U-05FL

™

Hysol

Urethane Adhesive

General-Purpose

A high performance urethane adhesive for general-

purpose metal bonding with a 5-minute work life.

Off-white, highly flexible, impact and moisture

resistant, high peel, high shear.

P/N

Package Size

29348

50 ml dual cartridge

29349

200 ml dual cartridge

29350

400 ml dual cartridge

Loctite

3364

™

Hysol

Urethane Adhesive

Rigid two-component urethane designed for flame

resistance and fast cure. Extremely fast cure.

™

94V-O rating.

P/N

Package Size

1166733

50 ml dual cartridge

WHAT ARE YOU BONDING?

Composites

Metal

Plastic

General-Purpose

Flame Resistance Required

UK 1351 B25

™

UK 1366 B10

™

U-09FL

™

U-05FL

™

3364

™

Color

Green

Clear

Off-White

Black

Viscosity (cP)

29,000

34,000

5,000

100,000

5,000

Mix Ratio

2:1

4:1

1:1

1:2

Work Life (minutes)

45 seconds

Fixture Time (minutes)

120

180

Cure Time (hours)

Shear Strength** (psi)

2,360

1,550

1,460

930

†

2,800

†

Structural Adhesives and NVH Selector Guide |

Loctite-GBS-4809-html.html

Henkel is a leading source for NVH (noise, vibration and
harshness), acoustic, structural and seam-sealing solutions
for the Ag-Con, specialty vehicle and appliance markets. We
provide advanced technologies and comprehensive design
and engineering support to enable you to meet performance
requirements for cabs, bodies and other applications. NVH
products are designed to solve problems associated with panel
and structural reinforcement, noise, vibration, water leakage and
fume infiltration.

ACOUSTIC TECHNOLOGIES

NVH products are used to reduce or damp noise levels resulting
in quieter vehicles and machines. These products also help
manage the stress and strain energies of assemblies, allowing
them to absorb shock without damage. There are two basic types
of NVH reduction strategies:

1. Damping:

Sheet metal damping materials reduce

unwanted structural vibration, which helps reduce vehicle
noise levels.

2. Expanding:

Acoustic barriers help block out road noise,

wind and other sounds coming from outside the cab,
resulting in a more pleasant driving experience.

Applications, where NVH products can be found, include
body panels, engine compartments, roof panels, doors,
floor pan baffles, underbody/drum coatings and roll-over
protective structures.

STRUCTURAL BONDING

Structural bonding is a process in which thermoset materials
are joined to substrates to form tough, high-strength, corrosion-
resistant bonds that impact resistance, add stiffness, reduce
weight and enhance durability. This product group encompasses
two types of materials: structural adhesives and structural
panel stiffeners.

These products are typically used in fabrication and assembly
plants prior to paint shop operations and are compatible with
metal pretreatments and e-coat chemistries. These materials also
adhere to oily substrates.

There are two types of structural bonding adhesives:

One-component, heat-cured

Two-component, room temperature-cured

SEAM SEALING

Seam sealing helps prevent metal corrosion (rust bleed-thru)
and the ingress of water, wind and fumes that can damage
or shorten the life of metal or interior components. Improper
sealing of seams can also pose a health risk to operators working
inside vehicle cabs (e.g., exposure to fuel and exhaust fumes).

Henkel offers three basic types of seam sealants that can be
used at virtually any stage of production, depending upon
process system and workflow requirements:

Weld-seam sealing products applied prior to
metal pretreatment

Post-metal treatment/pre-paint sealing products

After-paint sealing products applied after the component
or vehicle cab has been painted

Seam sealers are either moisture-curable or thermosetting, and
are available in several forms including easy-to-use hand-held
cartridges, pails, drums and totes for pumpable dispensing of
large volumes, or as preformed tapes or die-cuts for precise,
dimensional seam-sealing requirements.

NVH (NOISE, VIBRATION & HARSHNESS)

| Structural Adhesives and NVH Selector Guide

Loctite-GBS-4809-html.html

PRODUCT OVERVIEW

Our product line consists of pumpables and expandables,
preformed parts, rigid panels and tapes, cavity sealing foams and
custom die-cut shapes. Product applications include:

Structural and semi-structural adhesives and panel stiffeners

•

Structural tapes and patches

•

Stiffening patches

•

Expandable structural parts

Damping and expanding

•

High damping foam

•

Liquid-applied sound damping (LASD)

•

Expandable pillar filler parts

•

Baffles

•

Constrained butyl patches

Surface preparation

•

Surface and component cleaning

•

Metal pretreatment sealers

•

Paintable sealers

•

Functional coatings

SPECIALTY PRODUCTS

Specialty products include solutions for difficult or challenging
applications requiring a more complex engineered approach.
Specialty products typically consist of two main types
of materials:

1. Flowables:

These are thermoplastic or thermosetting

materials used to bridge metal gaps or seal difficult areas.

2. Elastomeric Adhesives and Sealants:

This family of

products exhibits high resiliency while maintaining high
tensile strength and good adhesion to many substrates.
They are isocyanate and solvent-free, and begin to cure
when in contact with ambient moisture.

Structural Adhesives and NVH Selector Guide |

Loctite-GBS-4809-html.html

ACOUSTICS LAB AND ENGINEERING SERVICES

Henkel’s technical support team offers engineering, design,
prototyping and testing services to help evaluate just about any
NVH, structural or seam-sealing application.

Our acoustics lab, located in Madison Heights, Michigan, is
equipped with state-of-the-art instrumentation and validation
equipment for conducting tests and performing analysis of noise
reduction variables on everything from discrete components and
sub-assemblies to full-size vehicles.

Evaluation services include Finite Element Analysis (FEA), CAE/
CAD design and FEA modal analysis. With these and other
analytical tools, we can help you:

•

Address problems involving vehicle stiffness,
mass distribution, panel reinforcement, NVH and
energy efficiency

•

Find ways to add structural integrity to vehicles without
increasing weight

•

Explore options for improving overall quality, durability
and useful life

Utilizing a complete portfolio of technologies, materials and
product variables, Henkel engineering can help you find the
solution that’s right for your application.

| Structural Adhesives and NVH Selector Guide

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Structural Adhesives and NVH Selector Guide |

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TWO -STEP ACRYLICS

ADVANTAGES

•

Fast fixture speed

•

Room temperature cure

•

No mixing required

•

High peel and impact strength

•

Good environmental resistance

•

Bonds to lightly contaminated surfaces

•

Cure can be accelerated with heat

CONSIDERATIONS

•

Limited cure through depth (0.040")

•

Activator may contain solvents

•

Activator requires controlled dispensing process

•

Adhesive may have strong odor

GENERAL DESCRIPTION

Two-step acrylic adhesives consist of a resin and an activator.
The resin component is a solvent-free, high-viscosity liquid
typically in the range of 10,000 to 100,000 cP. The activator is a
low viscosity liquid catalyst typically in the range of 2 to 50 cP.
The activator is available either as a solvent dispersion or pure
(also called “solventless”).

When the resin and activator contact each other the resin
begins to cure very rapidly fixturing in 15 seconds to several
minutes depending on the specific adhesive used and gap being
cured through.

In some cases the resin can also be cured with light or heat.
Light cure can be used to fully cure resin that light can reach,
fillets for example. While the fixture time depends on many
factors, 15 to 30 seconds is typical.

A typical heat cure cycle is 10 to 20 minutes at 300°F (149°C).
Heat curing normally offers higher bond strengths, improved
thermal resistance, better chemical resistance and achieves
complete cure faster. Heat cure is sometimes also used to
eliminate any residual odor of the acrylic adhesive from the
cured assembly.

PROCESS NOTES

Use the activator specified for the adhesive in the datasheet. All
activators are not compatible with all adhesives.

Do not over apply.

When using activators, do not over apply

them. The target quantity is normally 4 to 8 mg/in

. Solventless

activators generally require automated dispensing via a
rotospray or atomized spray valve.

Allow time for the carrier solvent to evaporate.

If using a

solvent-based activator, such as Loctite

7387

™

or 7649

™

, allow

sufficient time for the carrier solvent to evaporate after applying
the activator before mating the two assemblies. This is normally
30 to 60 seconds, but can be longer based on the specific
activator used.

Do not apply the activator and adhesive to the same part,

unless they are assembled immediately after dispensing. The
adhesive will start curing in as little as 5 to 15 seconds.

Do not apply the activator to porous surfaces

, such as a

ferrite magnet. The porous surface may absorb the activator
taking it away from the adhesive joint.

Be sure to assemble the parts before the activator open
time expires.

After that time, the adhesive may not cure

properly. Activator open times range widely from an hour to
30 days, so refer to the technical data sheet to determine the
open time for the activator you are using.

Protect activators from air exposure.

Depending upon their

specific chemistry, some activators may oxidize readily upon
exposure to air. Always close containers after use. Use a nitrogen
blanket if necessary to lessen air contact.

| Structural Adhesives and NVH Selector Guide

Loctite-GBS-4809-html.html

MAGNET BONDING

Loctite

Structural Adhesives for magnet bonding combine

the benefits of fast process speeds with tough, durable,
environmentally resistant bond strengths, making them ideal for
bonding ferrite, alnico and neodymium iron boron permanent
magnets used in electric motors, small engines, speakers,
transformers and other devices. Magnets assembled with
adhesives provide a wealth of benefits, including:

•

Ability to use lower cost components

•

Decreased inventory cost

•

Easier to automate

•

Will not chip magnets

•

Prevent vibrational noise

•

Prevent corrosion

•

Acid-free

•

Higher impact strength

•

Higher temperature resistance

Structural Adhesives and NVH Selector Guide |

Loctite-GBS-4809-html.html

TWO -STEP ACRYLIC ADHESIVES

Loctite

392

™

Structural Adhesive

Fast Fixture/Toughened

Single component, dual-cure

acrylic. Provides fast-fixture

speed and tough, reliable

bonds.

P/N

Package Size

39250

50 ml tube

39275

300 ml cartridge

39280

1 liter bottle

Loctite

334

™

Structural Adhesive

High Temperature

Single component, dual-cure

acrylic. Forms tough, flexible

bonds on gaps up to 0.02

in. Resists temperatures up

to 350°F.

P/N

Package Size

33403

25 ml syringe

33470

300 ml cartridge

Loctite

A-671

™

Structural Adhesive

Gap Filling

Two-component external
mix acrylic requires no static
mixing or activators. Excellent
humidity resistance and
gap-filling capability. Fast
fixturing.

P/N

Package Size

1256489 40 ml dual cartridge
1256488 4,000 ml kit

(adhesive/activator)

1256501 19 liter pail, adhesive
1255709 19 liter pail, activator

Loctite

331

™

Structural Adhesive

Ultra-Fast Fixture

Toughened, activator-cure

acrylic. Acid-free,

noncorrosive to sensitive

parts. Fixtures in 20 seconds

and develops full strength in

30 minutes. Excellent high

temperature resistance. Ideal

for bonding close-fitting

metals and magnets.

P/N

Package Size

1057673 25 ml syringe
1057674* 1 liter bottle
1062124* 10 liter pail

* Made-to-order item.
1 Steel.

Your Application

Loctite

Solution

Product Description

• Combine the benefits of fast

process speeds with tough,
durable and environmentally-
resistant bond strengths

• Ideal for bonding ferrite,

alnico and neodymium
permanent magnets used in
electric motors, small engines,
speakers, transformers and
other devices

ARE YOU BONDING MAGNETS?

Yes

Ultra-Fast

Fixture

Gap Filling

High Toughness

High Temperature

Resistance

Fast Fixture

Ultra-Fast

Fixture

High Temperature

Resistance

General-Purpose

331

™

A-671

™

392

™

334

™

326

™

331

™

332

™

330

™

Color

Cream

Green

Amber

Yellow

Light Amber

Cream

Amber

Pale Yellow

Viscosity (cP)

20,000

30,000

6,500

80,000

17,000

20,000

100,000

67,500

Gap Fill (in.)

0.04

0.10

0.025

0.02

0.04

0.02

0.03

Fixture Time

20 sec.

30 to 60 sec.

60 sec.

90 sec.

1 min.

20 sec.

3 min.

5 min.

Cure Time (hours)

Shear Strength

(psi)

3,100

2,500

2,800

3,500

3,100

3,000

3,300

Temperature Resistance

350ºF (177ºC)

311°F (155°C)

250ºF (121ºC)

350ºF (177ºC)

250ºF (121ºC)

350ºF (177ºC)

400ºF (204ºC)

250ºF (121ºC)

Recommended Activator

7387

™

Two-Part

External Mix

7387

™

7387

™

7649

™

7387

™

7387

™

7387

™

| Structural Adhesives and NVH Selector Guide

Loctite-GBS-4809-html.html

Loctite

331

™

Structural Adhesive

Ultra-Fast Fixture

Toughened, activator-cure

acrylic. Acid-free,

noncorrosive to sensitive

parts. Fixtures in 20 seconds

and develops full strength in

30 minutes. Excellent high

temperature resistance. Ideal

for bonding close-fitting

metals and magnets.

P/N

Package Size

1057673 25 ml syringe
1057674* 1 liter bottle
1062124* 10 liter pail

Loctite

326

™

Structural Adhesive

Fast Fixture

An all-purpose bonder. Offers

the strength of an epoxy

and the speed of an instant

adhesive. Solvent resistant.

Cures in minutes. Ideal for

applications requiring fast

fixturing. Use with Loctite

7649

™

P/N

Package Size

32629

50 ml bottle

32685

1 liter bottle

Loctite

332

™

Structural Adhesive

High Temperature

An activator-cured, no-mix

adhesive that provides high

temperature capability with

thermal durability up to

400°F (204°C).

P/N

Package Size

33201

25 ml syringe

33275

300 ml cartridge

33290

1 liter bottle

Loctite

330

™

Depend

Adhesive

General Purpose

A general-purpose, high

viscosity adhesive for a wide

range of materials, including

metal, wood, ferrite, ceramic

and plastic.

P/N

Package Size

20253

3 ml kit

20251

25 ml kit

20252

250 ml kit

33058

250 ml tube

33064

300 ml cartridge

33081

1 liter bottle

ACCELERATORS,

ACTIVATORS & PRIMERS

Henkel has a complete line of
Loctite

surface preparation

accelerators, activators and primers,
as well as a complete line of
general-purpose Loctite

branded

cleaners and degreasers, and
specialized products to ensure the
maximum performance of Loctite

adhesives and sealants.

Loctite

activators – including

7387

™

, 7075

™

, and 7649

™

– are

specially engineered curing agents
for structural adhesives.

ARE YOU BONDING MAGNETS?

Yes

Ultra-Fast

Fixture

Gap Filling

High Toughness

High Temperature

Resistance

Fast Fixture

Ultra-Fast

Fixture

High Temperature

Resistance

General-Purpose

331

™

A-671

™

392

™

334

™

326

™

331

™

332

™

330

™

Color

Cream

Green

Amber

Yellow

Light Amber

Cream

Amber

Pale Yellow

Viscosity (cP)

20,000

30,000

6,500

80,000

17,000

20,000

100,000

67,500

Gap Fill (in.)

0.04

0.10

0.025

0.02

0.04

0.02

0.03

Fixture Time

20 sec.

30 to 60 sec.

60 sec.

90 sec.

1 min.

20 sec.

3 min.

5 min.

Cure Time (hours)

Shear Strength

(psi)

3,100

2,500

2,800

3,500

3,100

3,000

3,300

Temperature Resistance

350ºF (177ºC)

311°F (155°C)

250ºF (121ºC)

350ºF (177ºC)

250ºF (121ºC)

350ºF (177ºC)

400ºF (204ºC)

250ºF (121ºC)

Recommended Activator

7387

™

Two-Part

External Mix

7387

™

7387

™

7649

™

7387

™

7387

™

7387

™

Structural Adhesives and NVH Selector Guide |

Loctite-GBS-4809-html.html

DISPENSING EQUIPMENT

RECOMMENDED LOCTITE

APPLICATORS

ADHESIVE PACKAGE

TYPE/SIZE

HANDHELD APPLICATORS

DISPENSER

ITEM NUMBER

EQUIPMENT TYPE

VISCOSITY RANGE

MIX RATIOS

RECOMMENDED

MIX NOZZLE

ITEM NUMBER

PCS/PK

TWO-PART DISPENSING

50 ML “A” DUAL

CARTRIDGE

98472

Manual

Low to High

1:1, 1:2, 2:1

98455

97042

Pneumatic

Low to High

1:1, 1:2, 2:1

98455

50 ML “B” DUAL

CARTRIDGE

98472

Manual

Low to High

1:1, 2:1

1573149

97042

Pneumatic

Low to High

1:1, 2:1

1573149

50 ML “S” DUAL

CARTRIDGE

1034026

Manual

Low to High

10:1

1034575

1493310

Pneumatic

Low to High

10:1

1034575

400 ML “C” DUAL

CARTRIDGE

983438

Manual

High to Paste

1:1, 2:1

98457

983439

Pneumatic

High to Paste

1:1, 2:1

98457

400 ML “F” DUAL

CARTRIDGE

983438

Manual

High to Paste

1:1, 2:1

1573138

984211

Conversion Kit (Manual)

High to Paste

4:1

98459

400 ML “F” DUAL

CARTRIDGE

983439

Pneumatic

High to Paste

1:1, 2:1

1573138

984210

Conversion Kit

(Pneumatic)

High to Paste

4:1

98459

490 ML “F” DUAL

CARTRIDGE

985246

Manual

High to Paste

10:1

1084092

985249

Pneumatic

High to Paste

10:1

1084092

* For additional applicator options please refer to the Equipment Sourcebook, LT-3669.

| Structural Adhesives and NVH Selector Guide

Loctite-GBS-4809-html.html

RECOMMENDED STATIC MIX NOZZLES

LOCTITE

PRODUCT

ITEM NUMBER

PACKAGE QUANTITY

DESCRIPTION

MIX NOZZLES FOR 50 ML DUAL (A STYLE) CARTRIDGES

98622

983509

2,000

50 ml Mix Nozzle, Slip-Luer, 5.9" overall length,

0.250" inner diameter, 20 elements; 1:1, 2:1 and

4:1 mix ratios.

98623

98364

2,000

50 ml Mix Nozzle, Stepped Tip-Luer, 5.9" overall length,

0.250" inner diameter, 20 elements; 1:1, 2:1 and

4:1 mix ratios.

98454

50 ml Mix Nozzle, Luer Tip, 6.0" overall length, 6.35 mm inner diameter,

21 elements; 1:1, 2:1, 4:1 mix ratios.

98455

1116241

2,500

50 ml Mix Nozzle, Stepped Tip, 6.0" overall length, 6.35 mm inner diameter,

21 elements; 1:1, 2:1, 4:1 mix ratios.

MIX NOZZLES FOR 50 ML DUAL (B AND S STYLE) CARTRIDGES

1573144

1573143

1,000

50 ml Mix Nozzle, Stepped Tip, 5.2" overall length, 6.5 mm inner diameter, 16

elements; 1:1, 2:1 mix ratios – B Cartridges.

1573149

1573147

1,000

50 ml Mix Nozzle, Stepped Tip, 6.2" overall length, 6.5 mm inner diameter, 20

elements; 1:1, 2:1 mix ratios – B Cartridges.

1034575

50 ml Mix Nozzle, Stepped Tip, 6.2" Overall Length, 6.5 mm inner diameter,

20 elements; 4:1, 10:1 mix ratio – B & S Cartridges.

MIX NOZZLES FOR 200 ML & 400 ML DUAL (C STYLE) CARTRIDGES

98474

98653

1,000

200/400 ml Square Mix Nozzle, Stepped Tip, 5.1" overall length,

7.5 mm inner dimension, 24 elements; 1:1; 2:1 mix ratios.

98456

1053262

2,000

200/400 ml Mix Nozzle, Stepped Tip, 7.3" overall length, 6.3 mm inner diameter,

24 elements; 1:1, 2:1 mix ratios.

98457

98464

1,500

200/400 ml Mix Nozzle, Stepped Tip, 8.8" overall length, 8 mm inner diameter,

24 elements; 1:1, 2:1 mix ratios.

MIX NOZZLES FOR 200 ML & 400 ML DUAL (F STYLE) CARTRIDGES

1573138

1573136

1,000

200/400 ml Mix Nozzle, Stepped Tip, 9.2" overall length, 8.0 mm inner diameter, 24

elements; 1:1, 2:1 mix ratios – F Cartridges.

1084255

1076341

1,200

200/400 ml 4:1 and 490 ml 10:1 Mix Nozzle, 9.2" overall length,

8 mm inner diameter, Stepped Tip, 24 elements – F Cartridges.

1084092

1084093

900

200/400-F ml Cartridge Mix Nozzle, 11.2" overall length, 10 mm inner diameter,

Stepped Tip, 24 elements; 4:1, 10:1 mix ratios – F Cartridges.

* For additional mix nozzle options please refer to the Equipment Sourcebook, LT-3669.

Structural Adhesives and NVH Selector Guide |

Loctite-GBS-4809-html.html

Henkel Corporation
Engineering Adhesives
One Henkel Way
Rocky Hill, Connecticut 06067, U.S.A.
Tel: 860-571-5100
Fax: 860-571-5465
www.henkelna.com/industrial
www.henkelna.com/loctite
www.henkelna.com/loctitestructurals

Except as otherwise noted, all marks are trademarks and/or registered trademarks of Henkel and/or its affiliates in the U.S. and elsewhere. ® = registered in the U.S. Patent and Trademark Office.
UL is a trademark of Underwriters Laboratories Inc. © 2013 Henkel Corporation. All rights reserved. 10458/LT-4809 (9/13)