Purple to Pink INFINISIL Logo "Fiberglass Performance Silicone"

Product Description

INFINISIL Fiberglass Inserted Silicone

INFINISIL Fiberglass Inserted Silicone is preferred where dimensional stability from mechanically reinforced silicone sheet rubber is required.

It is resistant to extreme high and low temperature ranges and is proven to be an excellent gasketing material. With increased tensile strength from fiberglass reinforcement may be used in belting and diaphragm applications. Made in the USA.

Samples available upon request.

Product Image

Key Aspects

Temperature Range: -80°F to +450°F
Durometer Range (Shore A ± 5): 40 to 80
Tensile Range (typical psi.): 750 to 800
Elongation Range (typical %): 300 to 450
Finishes Available: Smooth, Nylon*
Talc: Talc Free Available
Primary Feature: Fiberglass Insert

*Nylon Finish Always Talc Free

We comply with the Buy American Act requirements.

Advanced Technical Details

(Shore A ± 5)
Compound Thickness
Tensile (psi) Ultimate
Elongation (%)
Estimated Weight
Per Linear Foot
(1/8" x 36")
Minimum Typical Minimum Typical
40 040S0842 Rolls: 1/32 - 1/4
Molded Sheets: Up to 4
36, 48 --- 750 --- 450 2.36 lb
50 050S0843 Rolls: 1/32 - 1/4
Molded Sheets: Up to 4
36, 48 --- 750 --- 400 2.46 lb
60 060S0844 Rolls: 1/32 - 1/4
Molded Sheets: Up to 4
36, 48 --- 800 --- 350 2.63 lb
70 070S0845 Rolls: 1/32 - 1/4
Molded Sheets: Up to 4
36, 48 --- 800 --- 300 2.59 lb

Compound Number: 040S0842, 050S0843, 060S0844, 070S0845

Fiberglass Fabric Physicals

Weave Count Weight Thickness Breaking Strength Specification
Plain 28 x 20 11.8 oz per sq yd 0.013" 525 x 375 MIL-Y-1140H Class C Form 4
Roll Width: 36″ , 48″

Molded Sheet Size: 36″ x 36″ , 48″ x 48″

Trim: Untrimmed

Color: Black

Stock Item Minimum: One Foot

Non Stok Item Minimum: One Roll

INFINISIL® is a registered trademark of West American Rubber Company, LLC. All text containing the word “INFINISIL” is trademarked by West American Rubber Company, LLC regardless of whether the ® mark or ™ mark is attached or not.

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

Other INFINISIL™ Sheet Rubber Products

INFINISIL Spec-Grade Performance Silicone

  • Durometer: 40 to 70
  • Temperature Range: -80°F to +450°F
  • Specs: A-A-59588 2A & 2B AMS 3301 – 3304 ASTM D2000 M1GE

INFINISIL™ FDA Performance Silicone

  • Durometer: 40 to 80
  • Temperature Range: -80°F to +450°F
  • Specs: FDA approved ingredients per 21 CFR 177.2600

INFINISIL Performance Silicone

  • Durometer: 40 to 80
  • Temperature Range: -80°F to +450°F
  • Primary Feature: High & Low Temperature Resistance, Excellent Weathering Resistance