LOCTITE® 402: Henkel’s Next-Gen Instant Adhesive

Düsseldorf, Germany – Henkel introduces its latest innovation in instant bonding: LOCTITE® 402, a high-performance adhesive designed to meet the fast-paced, high-demand needs of modern manufacturing. From high-speed production lines to precision repairs, LOCTITE 402 is engineered to boost productivity, simplify processes, and enhance reliability—all while setting a new benchmark for health and safety.

As part of Henkel’s LOCTITE® Instant Component Bonding range, LOCTITE 402 solves many of the common pain points in product assembly, including design constraints, heat exposure, and the need for faster throughput. Its advanced formula brings together faster curing, higher temperature tolerance, and improved impact resistance, making it a go-to choice for applications across industries like urban mobility, consumer electronics, home automation, and power tools.

Key Benefits of LOCTITE® 402

1. Speed and Strength in One Solution

LOCTITE 402 cures in just 3–10 seconds on most substrates—twice as fast as many comparable adhesives—enabling manufacturers to accelerate production and reduce work-in-progress (WIP). This single-component adhesive bonds a wide variety of materials including metals, plastics, elastomers, and hard-to-bond substrates (with primer), making it versatile for both manual and automated assembly processes.

2. Reliable High-Temperature Performance

Where traditional instant adhesives fall short under heat, LOCTITE 402 delivers. It retains strength on most metals up to 135°C, both during heat exposure ("hot strength") and post-exposure ("heat aging"). This makes it ideal for end-products where power sources or electronic components generate significant heat, ensuring long-term performance and durability.

3. Health & Safety-Forward Formulation

A patented stabilizer package allows Henkel to eliminate hydroquinone (HQ) and MMBP—two ingredients facing increased regulatory scrutiny in many regions—from LOCTITE 402’s formula. While present in only trace amounts in previous formulations, their removal reflects Henkel’s commitment to improving worker safety and environmental compliance without compromising performance.

This health-conscious reformulation positions LOCTITE 402 as a safer alternative to conventional instant adhesives, giving manufacturers confidence in both product quality and workplace safety.

Versatility Meets Innovation

LOCTITE® 402 is compatible with Henkel’s full range of manual to fully automated dispensing systems, allowing seamless integration into existing lines. This flexibility, combined with its robust technical profile, empowers product designers and engineers to push the boundaries of design, reduce assembly costs, and increase reliability across a broader range of applications.

Conclusion

With LOCTITE® 402, Henkel delivers a next-generation adhesive solution that blends speed, strength, safety, and thermal performance. It’s more than just an adhesive—it’s a step forward in the evolution of high-performance assembly.