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Engineered Elastomers

Fluorosilicone Rubber (FSR) and
Fluoro Liquid Silicone Rubber (F-LSR)

Answers for demanding automotive challenges

For answers to difficult automotive applications that require proven temperature and chemical resistance, look to the Silastic® brand from Dow Corning. With more than 70 years of advanced silicone experience and innovation, you can count on Dow Corning for the specialty fluorosilicone expertise and automotive market knowledge that can help you succeed; contact us to find out how we can help you overcome your specific challenges. Working with key industry segments, we are striving to provide solutions to today’s manufacturing needs… and developing technologies to address tomorrow's toughest automotive challenges, such as fluorosilicone elastomer materials with higher thermal stability.

Meet the demands of extreme automotive applications

Increasing performance, controlling costs and meeting regulatory requirements are critical design objectives throughout today’s transportation industry worldwide. Silastic® fluorosilicone elastomers are especially well-suited to help improve component performance and reliability and expand design options with:
  • Excellent resistance to fuels, oils, solvents, chemicals and aggressive fluids
  • Stable physical properties over a wide service-temperature range, from -40 to 250°C (Tg~-68°C)
  • Good dielectric insulating performance for electrical protection in aggressive environments requiring fluid resistance
  • Retention of mechanical performance in challenging service environments for long-lasting components

Silastic® Fluorosilicone Rubber (FSR)
For extrusion, calendering, and injection or
compression molding applications

  • Offers a wide range of high-performance engineering properties for application versatility
  • Can be custom-compounded to meet specific OEM performance specifications related to heat aging, fluid resistance and swelling
  • Can be easier to process than some fluorinated organic elastomers, such as FKM

Silastic® Fluoro Liquid Silicone Rubber (F-LSR)
For injection-molding and heat-curing applications

  • Offers a range of Shore A hardness options
  • Enhances design flexibility for small parts, intricate designs, high precision and dimensional stability
  • Cures quickly at lower temperatures, allowing over-molding on plastics
  • Improves manufacturing efficiency and productivity with automated injection-molding
  • Can help meet needs for increased output, short cycle times, less scrap and energy savings

Durability for extreme automotive applications

Combining high performance and processing versatility, Silastic® engineered elastomers are especially suited for:
  • Turbocharger hoses
  • Seals, O-rings and gaskets
  • Fuel quick-connect seals
  • Electrical connectors
  • Umbrella valves
  • Flexible diaphragms
  • Control membranes

Working on something new? Facing a unique automotive challenge that requires high-performance engineered elastomers? Talk to us about how we can work together.

Have other demanding automotive challenges? Discover the range of Dow Corning solutions at

Get Answers
Work with Dow Corning for
answers to your engineered
elastomer application needs

Contact Us
Feel the Difference
Want to see for yourself how
the four durometer options
of Silastic® F-LSR
could help your application?
Check out the F-LSR
sample card to feel molded
samples of each material.

Request a Sample Card
Learn More
Silastic® brand Fluorosilicone Rubber for Higher Operating Temperatures LS-2940U and LS-2970U Fluorosilicone Rubber

Silastic® brand
Fluorosilicone Rubber
for Higher Operating

Silastic® LS-2940 U and
Silastic® LS-2970 U
Fluorosilicone Rubber


Rubber World Cover Advances in Fluorosilicone Elastomers: Sustainable Automotive Innovation

Smart Science Drives Fluorosilicone Rubber Innovation (PDF)

Advances in Fluorosilicone Elastomers: Sustainable Automotive Innovation

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