LORD Corporation

With more than 3,100 employees in 26 countries, 19 manufacturing facilities and 10 R&D centers worldwide, we're there for our customers.

Our Company
Learn about Parker’s safety-focused approach to COVID-19. Read More

Chemlok® 3S-902 LSR Adhesion Additive

Product Information

Chemlok® 3S-902 additive is an adhesion promoting additive that, when mixed with liquid silicone rubber (LSR), imparts self-bonding properties to standard LSR, providing standard LSR the ability to bond to many types of substrates, including plastics and clean metals. Substrates tested include PBT, PA6, PA66, aluminum, steel and zinc.

Shelf Life

Shelf life is one year from date of manufacture when stored at temperatures less than 27°C (80°F) in original, unopened container.

Chemlok 3S-902 additive is moisture sensitive. Minimize exposure of the additive to moisture during application and storage.

Features and Benefits

Versatile – works on a wide range of LSR grades and durometers from all major manufacturers.

Easy to Use – injects directly into LSR feed system using standard dosing or pumping equipment, similar to feeding color concentrates or other additives.

Durable – produces robust, durable bonds that can withstand harsh environments.

Environmentally Preferred – eliminates the VOCs associated with traditional primer or adhesive application.

Medical Use – formula passes ISO 10993-5** cytotoxicity and ISO 10993-10** skin irritation testing.

**It is the responsibility of the user to determine that the final product complies with the ISO 10993 requirement.

Typical Properties*

Appearance Clear to Light Amber Liquid
Viscosity, cps @ 25°C (77°F) 25
Density, g/cm3 (lb/gal) 1.07 (8.93)
Flash Point, °C (°F) >93 (>200)
Refractive Index 1.46

*Data based on pre-production samples and should not be used for specification purposes.


Download Type Name
Download Technical Data Sheet Chemlok 3S-902 LSR Adhesion Additive
Download White Paper Chemlok 3S-902 Liquid Silicone Rubber Adhesion Additive
Download Application Guide Chemlok 3Stream LSR Adhesion Additive Application Guide

NPS Survey

Product Way-Finding webform
Product Way-Finding webform
Feedback Button
Feedback Button