FM41 Loctite 410 Black Rubber Toughened One-part, Room Temperature Cure, Gap Filling Instant Adhesive

Product Overview

Loctite 410 is a high-performance, one-part instant adhesive engineered for reliable bonding across diverse substrates. As a rubber-toughened, ethyl-based formula, it stands out for its room temperature cure capability, eliminating the need for specialized heating equipment and simplifying on-site and industrial applications.

Designed to fill gaps up to 0.20mm, this black adhesive delivers strong, durable bonds with a tensile shear strength of 3,190 psi—making it ideal for small to medium-sized parts that require structural integrity. Its solvent-free composition ensures safe use in sensitive environments, while compliance with CFIA standards underscores its quality and reliability. Whether bonding plastics, rubbers, or metals, Loctite 410 offers versatility, speed, and consistency, making it a go-to solution for manufacturing, repair, and assembly tasks.

Key Features

Rapid Curing for Efficient Production

One of the most notable advantages of Loctite 410 is its fast curing speed. It achieves fixture in just 30–60 seconds, allowing for quick handling of bonded parts and reducing production downtime. Full curing is completed within 24 hours, ensuring long-term bond stability without compromising workflow efficiency.

Versatile Substrate Compatibility

This adhesive excels with a wide range of materials. It bonds effectively to most plastics (including polyolefins when used with LOCTITE SF 770 or LOCTITE SF 7239 primers), rubbers, and metals, eliminating the need for multiple adhesives in mixed-material assemblies. Its rubber-toughened formula enhances flexibility, making it suitable for parts subject to minor vibrations or thermal expansion.

Reliable Performance in Extreme Conditions

Loctite 410 maintains its strength across a broad temperature range of -54℃ to 107℃, ensuring performance in both cold storage and high-heat industrial environments. With a viscosity of 1,700~5,000 mPa.s (cP), it balances flowability and gap-filling ability, adhering well even to slightly irregular surfaces without excessive run-off.

Safe and Clean Application

Being solvent-free, Loctite 410 reduces exposure to harmful volatile organic compounds (VOCs), promoting a safer workplace. Its black color also aids in visual inspection, ensuring even application and complete coverage on parts.

Applications

Industrial Assembly

Loctite 410 is widely used in electronics manufacturing for bonding small components like connectors and sensors, where fast fixture times and strong bonds are critical. It also excels in automotive assembly, securing rubber gaskets, plastic trim, and metal brackets—especially in areas where heat curing is impractical.

Repair and Maintenance

For on-site repairs, this adhesive simplifies fixes for rubber hoses, plastic casings, and metal parts in machinery, tools, and equipment. Its room temperature cure and gap-filling capability make it ideal for emergency repairs where disassembly or specialized tools are unavailable.

Specialty Bonding

In medical device assembly (for non-implantable parts) and consumer goods production, Loctite 410 meets strict safety standards while delivering consistent results. It is also used in toy manufacturing and appliance assembly, where bonding plastics and rubbers with minimal odor and toxicity is essential.

FAQ

What primers are recommended for polyolefins?

For bonding polyolefins (such as polyethylene or polypropylene), LOCTITE SF 770 or LOCTITE SF 7239 primers are required to ensure optimal adhesion. These primers modify the surface of polyolefins, allowing Loctite 410 to form strong bonds.

How should Loctite 410 be stored?

To maintain shelf life, store Loctite 410 in a cool, dry place at temperatures between 2℃ and 8℃ (36℉ to 46℉). Avoid exposure to direct sunlight or heat sources, as this can accelerate curing in the container.

Can it be used for outdoor applications?

Yes, Loctite 410 is suitable for outdoor use. Its temperature resistance (-54℃ to 107℃) and durable bond withstand weathering, moisture, and temperature fluctuations, making it reliable for outdoor equipment and fixtures.

What is the maximum gap it can fill?

Loctite 410 effectively fills gaps up to 0.20mm. For larger gaps, consider mechanical fastening in combination with the adhesive to ensure structural stability.