Henkel Adhesive Technologies

Henkel Adhesive Technologies

Structural bonding solutions

The market demands are ever evolving, and so is the manufacturing landscape. Increasing bond strength while achieving light-weighting goals, fewer process steps, and, better aesthetics have become a priority. LOCTITE® Structural bonders and sealants have been helping manufacturers get long-lasting bonding and sealing while increasing productivity and reducing cost.
Product shot of AA 326 in an industrial setup.
Group shot of LOCTITE Structural adhesives.

Find structural bonding solutions

Explore our versatile products, designed to provide reliable, long-lasting bonding and sealing where load-bearing and other structural conditions are required. Visit our e-Catalog to discover the wide variety of LOCTITE® structural bonding solutions available.

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~75%

Less expensive

Compared to rivets, bolts, and welding

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~2X

Stronger bonds

Compared to rivets, bolts, and other traditional methods

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...

~20X

Increased productivity

Compared to rivets, bolts, welding, and other traditional methods

Take off the weight.

Take on the load.

Three grams of adhesive. One hour. That's what it took for LOCTITE to pull a 208 ton train. How did we make that math work? This rapid bonding capability is a testament to the efficiency and speed of the LOCTITE Hybrid adhesive, allowing for significantly reduced downtime and increased productivity in various industries where time-sensitive projects are the norm.

This breakthrough in adhesive technology showcases the potential for LOCTITE Hybrid adhesives to revolutionize the way heavy machinery and structures are assembled and maintained.

Image depicting industrial welding process.

Traditional bonding methods add weight, time, and cost

In modern manufacturing and engineering practices, there is an increasing need for a highly efficient bonding solution that can seamlessly join materials with diverse properties and compositions. This includes bonding dissimilar materials, such as metals to plastics or composites to metals, which presents a significant challenge due to the mismatched characteristics and behaviors of these materials. Traditional assembly methods often fall short in achieving robust and lasting attachment between these disparate substrates.

Furthermore, traditional mechanical fastening methods, while effective in certain applications, have limitations in terms of joint strength, weight implications, and resistance to dynamic stresses. The reliance on such methods often results in suboptimal joint integrity, contributing to structural weaknesses and potential failures, especially in environments subjected to high loads, vibrations, or variations in temperature.

LOCTITE structural adhesives have the answer

LOCTITE® structural adhesive solutions provide high bonding strength, often exceeding traditional mechanical fastening methods like welding or riveting. This strength contributes to the overall durability and longevity of the bonded assembly. Compared to traditional fastening methods, structural adhesives are typically lighter. Adhesives distribute stress evenly across the bonded surfaces, reducing stress concentrations that are common with mechanical fasteners. This can result in enhanced fatigue resistance and a longer service life for the bonded components. These adhesives create a smooth and continuous bond, enhancing the appearance of the final product by hiding seams and joints.

Image depicting the Loctite structural adhesive application in lab setting.

LOCTITE structural bonding vs.

traditional methods

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LOCTITE vs. welding

LOCTITE structural adhesives are preferred over welding by designers for fabrication projects. They typically have higher strength than spot welds, cost less, and are up to 20 times faster.

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LOCTITE vs. double sided tape

Double-sided tapes offer instant assembly. However, cutting the tape, applying and setting the parts affects the cost and productivity. LOCTITE Structural Adhesives are simple to use and are as strong as as overlap welds.

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LOCTITE vs. riveting & bolting

Mechanical fastening methods like rivets and bolts reduce productivity and are not cost-effective. LOCTITE Structural Adhesives deliver up to 2x more strength and typically at a lower cost. Also, bonding with structural adhesives is easier and quicker than bolting or riveting.

Why choose LOCTITE structural bonding solutions?

Weight reduction

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Eliminates added weight from fasteners or other mechanical fastening methods and bonds various lightweight materials reliably.

Cost reduction

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Simplifies application, lowers inventory of parts leading to cost saving.

Increase productivity

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Provides simple and fast bonding without any welding or drilling requirements.

Improved aesthetics

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Provides smooth and continuous bonds without any visible seams and joints.

Increase reliability & durability

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Absorbs and distributes stress uniformly to make assemblies more reliable.

Bond dissimilar materials

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Bond a wide variety of materials easily & reliably, including magnets.

Choosing a LOCTITE structural adhesive

LOCTITE provides a comprehensive range of structural adhesives, alongside proven cases for specific industrial bonding, sealing and assembly applications. Additionally, 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 are available. Whatever your requirements, the LOCTITE team is on hand to offer advice and guidance on the best structural adhesive for your design, process, or industry.

Image of LOCTITE HH3410 & HH3405 in various sizes.
Image depicting the application LOCTITE AA 330.

General purpose

LOCTITE® has a wide range of structural adhesives, from general purpose — strong and versatile enough to cover the majority of applications, to specialty — formulated for the rare cases where general purpose won’t do. The below products can accommodate bonding needs for the following substrates : aluminum, ceramic, concrete, glass, metal, stainless steel, steel, wood, and plastic

  • 2 step acrylic LOCTITE® AA 330 : small gaps (0.02 in), fixture time (4 minutes), temperature resistance (250°F), pale yellow color
  • Epoxy LOCTITE® EA E-00CL: fixture time (15 minutes), temperature resistance (300°F), clear color
  • Epoxy LOCTITE® EA E-00NS : Non-sag, fixture time (15 minutes), temperature resistance (300°F), translucent color
  • Epoxy LOCTITE® EA E-05MR : moisture resistant, fixture time (15 minutes), temperature resistance (300°F), ultra clear color
Image depicting LOCTITE EA E-05CL in an industrial set up.

Flexible solutions

Offering excellent shock absorption, elasticity and adhesion to plastics, metals and glass. The below products can accommodate bonding needs for the following substrates : aluminum, ceramic, concrete, glass, metal, plastic, stainless steel, steel, wood

  • Epoxy LOCTITE® EA E-05CL: fixture speed 30 minutes , work life 5 minutes, temperature resistance (300°F), clear color
  • Polyurethane LOCTITE® UK U-05FL: fixture speed 160 minutes , work life 5 minutes, temperature resistance (300°F), off-white color
Image depicting the application LOCTITE AA 326 & AA 321 in industrial setup.

Magnet bonding

Magnets are everywhere and so is magnet bonding. It is an application used in a wide range of industries, including electrical machinery, power tools, the automotive industry, audio and video equipment, household appliances and other fields. The production of e-motors, in particular, is a booming industry in which magnet bonding plays a vital role – especially when it comes to driving efficiency. From ultra fast fixture & high temperature resistance to varying viscosity, the solutions below could match your needs.

  • Two-step LOCTITE® Acrylic AA 326: medium viscosity, fixture speed (2 minutes), small gaps (0.02 in), temperature resistance (250°F), light amber color
  • Two-step LOCTITE® Acrylic AA 331: Ultra fast fixture (20 seconds), small gaps (0.02 in), temperature resistance (350°F), light yellow color
  • Two-step LOCTITE® Acrylic AA 332: high temperature resistance (400°F), fixture speed (2 minutes), small gaps (0.02 in), amber color
Image depicting application of LOCTITE EA E-60NC.

Potting

Flowable epoxies designed for filling cavities and protecting components. The below products can accommodate potting needs for the following substrates : ceramics, glass, metals, optical fibers, rigid plastics.

  • Epoxy LOCTITE® EA E-30CL: Wear resistant, fixture time (180 minutes), work life (30 minutes), temperature resistance (350°F), clear color
  • Epoxy LOCTITE® EA E-40EXP: Explosion proof, work life (40 minutes), temperature resistance (300°F), black color
  • Epoxy LOCTITE® EA E-60NC: Non-corrosive, work life (60 minutes), temperature resistance (250°F), black color
Image of LOCTITE EA E-20HP application in lab set up.

High performance (short worklife)

Solutions designed for a range of product needs, with respect to impact strength, peel strength, durability, working time etc.

The below products can accommodate bonding needs for the following substrates : acrylonitrile butadiene styrene, aluminum, fiberglass reinforced plastic (FRP), galvanized steel, gel coat, RTM, stainless steel, steel, xenon, and various other plastics

  • Two-part LOCTITE® Acrylic AA H4800: high impact, plastic bonder, work life 30 minutes, temperature resistance (180°F), light yellow.
  • Two-part LOCTITE® Acrylic AA H8000: high impact, metal bonder, work life 30 minutes, temperature resistance (180°F), green.
  • Two-part LOCTITE® Acrylic AA H8003: high impact, metal bonder, work life 5 minutes, temperature resistance (180°F), green.

For Substrates : aluminum, ceramic, concrete, glass, metal, steel, stainless steel, wood

  • Epoxy LOCTITE® EA E-20HP: high shear, high peel, work life 20 minutes, temperature resistance (180°F), green.
Image of LOCTITE EA E-120HP.

High performance (extended worklife)

Solutions designed for a range of product needs, with respect to impact strength, peel strength, durability, working time etc.

The below products can accommodate bonding needs for the following substrates: aluminum, ceramic, concrete, glass, metal, stainless steel, steel, wood, and plastic

  • Epoxy EA E-60HP: high shear, high peel, fixture time (180 minutes), work life (60 minutes), temperature resistance (350°F), off-white color
  • Epoxy LOCTITE® EA E-90FL: high shear, flexible, work life (90 minutes), temperature resistance (350°F), opaque grey color
  • Epoxy LOCTITE® EA E-120HP: high shear, non-sag, work life (120 minutes), temperature resistance (350°F), Amber color
Image depicting LOCTITE Acrylic AA 3035 in an industrial set up.

Special substrates

Structural bonders that were specifically formulated for challenging substrates, including select plastics and metals:

Bonding: Polyolefin

  • Two-part LOCTITE® Acrylic AA 3035 : Work life 5 minutes, temperature resistance (180°F), pale yellow

Bonding: Galvanized Steel

  • Two-part LOCTITE® Acrylic AA H8600 : Work life 25 minutes, temperature resistance (250°F), blue
Family shot of LOCTITE HY 4070 & LOCTITE HY 4090.

Hybrid universal bonders

LOCTITE Hybrid Universal Bonders combine the key features of structural and instant adhesives – bond strength and speed. Loctite Hybrid adhesives have been designed to reach beyond conventional industry approaches. Loctite Hybrid adhesives offer high-quality performance in extreme environments.

LOCTITE® HY4090 and LOCTITE® HY4070 hybrid adhesives deliver the speed of a cyanoacrylate (instant adhesive) and the strength of an epoxy. This powerful combination provides high-impact resistance, high-strength bonding on a variety of substrates, and high-temperature resistance, making these solutions versatile enough to solve a wide range of design and assembly challenges.

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