Blue to Green INFINISIL Logo "Spec-Grade Performance Silicone"

Product Description

INFINISIL Spec Grade Performance Silicone

INFINISIL Spec Grade Performance Silicone is designed to be used in applications where higher physical properties and lower compression set are required.

It is resistant to extreme high and low temperature ranges and is proven to be an excellent gasketing material. Meets the A-A-59588 specification which supersedes ZZ-R-765. Made in the USA.

Color: Red (other colors available)

Samples available upon request.

Product Image

Key Aspects

Temperature Range:-80°F to +450°F
Durometer Range (Shore A ± 5):40 to 70
Tensile (min.):725 psi
Elongation Range (min.):150% to 300%
Finishes Available:Smooth, Nylon
Talc:Talc-Free Available

A-A-59588 2A & 2B

AMS 3301

ASTM D 2000 M1GE

Compound Number(s)Part Number(s)

We comply with the Buy American Act requirements.

Advanced Technical Details

(Shore A ± 5)
Estimated Weight
Per Linear Foot
(1/8″ x 36″)
Rolls: 1/32 – 1/4
Molded Sheets: Up to 4
36, 48725 psi300%2.36 lbA-A-59588 2A & 2B Grade 40,
AMS 3301, ASTM D2000 M1GE 405
Rolls: 1/32 – 1/4
Molded Sheets: Up to 4
36, 48725 psi250%2.42 lbA-A-59588 2A & 2B Grade 50,
AMS 3302, ASTM D2000 M1GE 505
Rolls: 1/32 – 1/4
Molded Sheets: Up to 4
36, 48725 psi250%2.57 lbA-A-59588 2A & 2B Grade 60,
AMS 3303, ASTM D2000 M1GE 605
Rolls: 1/32 – 1/4
Molded Sheets: Up to 4
36, 48725 psi150%2.59 lbA-A-59588 2A & 2B Grade 70,
AMS 3304, ASTM D2000 M1GE 705
Upon Request

Compound Numbers: 040S0561(40S561), 050S0562(50S562), 060S0563(60S563), 070S0564(70S564)

Unsure on how to read our compound number? Read the page, “How to Read a Compound Number”.

General Information for WARCO Sheet Rubber

Rubber Roll Width

WARCO Sheet rubber rolls are available in 36” or 48” width. Custom widths available up to 55″. Rolls are untrimmed and can measure approximately 3” in additional width. Trimmed rolled rubber is available upon request.

Custom widths are available, please call (714-532-3355) for details.

Standard Minimum Order Quantity

The minimum order quantity for a standard WARCO Sheet rubber is one roll. For custom applications, please call (714-532-3355) for more information.

Rubber Roll Lengths

Standard Roll approximate length ±10%. Products may vary, please see product listing for standard roll lengths.

Sheet Roll Lengths:

  • 1/64″ thick – 180 feet
  • 1/32” thick – 150 feet
  • 1/16” thick – 100 feet
  • 3/32” thick – 65 feet
  • 1/8” thick – 50 feet
  • 3/16” thick – 30 feet
  • 1/4” thick – 25 feet
  • 5/16” thick – 20 feet
  • 3/8” thick – 16.5 feet
  • 1/2” thick – 12.5 feet

Sheet Rubber Thickness Tolerances

Closer tolerances and Custom thicknesses are available and can be priced on request.

WARCO Thickness Tolerance – Standard RMA

  • 0.031” & thinner: ± 0.010″
  • 0.032″ to 0.061″: ± 0.012″
  • 0.062″ to 0.124″: ± 0.016″
  • 0.125″ to 0.186″: ± 0.020″
  • 0.187″ to 0.374″: ± 0.031″
  • 0.375″ to 0.500″: ± 0.047″
  • 0.501″ to 0.750″: ± 0.094″
  • 0.751″ & thicker: ± 10%

Sheet Rubber Finish

Unless otherwise noted, sheet rubber has a standard smooth finish. Textured (fabric) finish and matte finish are available on most materials at an additional cost. Please call for details.

Sheet Rubber Color

This product is red as opposed to the standard color of our sheet rubber, black. Custom colors and color matching is available.

Test Reports

Short form test results, basic physicals, are available upon request at the time of the order. Full test reports for particular specifications will be also quoted on request. This may include certifying the ozone resistance, heat ageing, compliances, and many more aspects of our product. Certifications are sent with your order upon request at no charge.

More information about the WARCO products is available at General Product Information.

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. The specification listed here, SAE AMS, stands for the Society of Automotive Engineers International Aerospace Material Specifications, a global association of engineers and related technical experts in the aerospace, automotive, and commercial-vehicle industries. Their website can be found here: The specification listed here, ASTM, stands for the American Society for Testing and Materials which is the developer and provider of voluntary consensus standards, related technical information, and services. Their website can be found here:

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

Other INFINISIL™ Sheet Rubber Products

INFINISIL™ Fiberglass Inserted Silicone

  • Durometer: 40 to 70
  • Temperature Range: -80°F to +450°F
  • Primary Feature: Fiberglass inserted sheet

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