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The INFINISIL® Performance Silicone Family

For years our INFINISIL silicone rubber products have taken you to the extreme with their ability to withstand an exceptionally wide range of temperatures and severe environments.

Our silicone rubber can withstand a wider range of temperature extremes than nearly all other elastomers, remaining viable from -80°F to +450°F. Silicone has excellent temperature range and good compression set. Silicone can withstand many extreme environments. It can resist water and many chemicals, including some acids, oxidizing chemicals and ammonia.

INFINISIL® Performance Silicone is available in Sheet, Molded and Extruded products and may be customized to meet your specification. Contact us to learn more.

The INFINISIL Silicone Rubber Family

INFINISIL® is available in four grades: general purpose INFINISIL® Performance Silicone, INFINISIL® FDA Performance Silicone, INFINISIL® Fiberglass Inserted Silicone and INFINISIL® Spec-Grade Performance Silicone which meets A-A-59588, AMS and ASTM D2000 specifications. Customized products are also available.

Click the product below to learn more about INFINISIL.

Red INFINISIL Logo "Performance Silicone"

INFINISIL® Performance Silicone

  • Durometer: 40 to 85
  • Temperature Range: -80°F to +450°F
  • Primary Feature: High & Low Temperature Resistance, Excellent Weathering Resistance
Blue to Green INFINISIL Logo "Spec-Grade Performance Silicone"

INFINISIL® Spec-Grade Silicone

  • Durometer: 40 to 70
  • Temperature Range: -80°F to +450°F
  • Specs: A-A-59588 2A & 2B, AMS 3301, ASTM D 2000 M1GE
Orange to Pink INFINISIL Logo "FDA Performance Silicone"


  • Durometer: 75
  • Temperature Range: -20°F to +500°F
  • Specs: FDA Approved Ingredients per 21 CFR 177.2600
Purple to Pink INFINISIL Logo "Fiberglass Performance Silicone"
INFINISIL® Fiberglass Inserted Silicone

  • Durometer: 40 to 85
  • Temperature Range: -80°F to +450°F
  • Primary Feature: Made in the USA

INFINISIL® is a registered trademark of West American Rubber Company, LLC.

Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. The named product polymer is not necessarily the primary polymer representing the highest percentage of the polymer blend. Determination of the suitability of the goods for the uses and applications contemplated by Buyer and others shall be the sole responsibility of the Buyer or user. No guaranty is given with respect to length of service on any particular application. Suggestions or recommendations made by Seller in its product literature concerning uses or applications of the goods are believed to be reliable, but Seller makes no warranty or guaranty of results to be obtained since the conditions of the use and application by Buyer and others are beyond Seller’s control.

View complete Terms & conditions of Sale for suitability of use and formulations