R10470M silicone sponge rubber is a specification-grade closed-cell silicone sponge that can be used in most gasket applications. This material is flexible and compressible and designed for use in extreme temperature ranges, with excellent weather resistance, compression set resistance, electrical strength, and non-stick properties.


  • Capable of meeting AMS 3195 closed-cell specification
  • Boeing BMS1-23
  • UL-recognized weather seal gasket
  • Capable of meeting MIL-R-6130 Type II, Grade B and Grade C/ASTM D6576 Type 2, Grade B and Grade C/MILR46089/ASTM D1056 Type 2, Class A and D

Technical Data

R10470M Silicone Sponge Specifications

Product Specs

Test Method Property Typical Value
ASTM D1056 Compression Deflection: psi (kPa) 10 (70)
ASTM D412 Elongation: % 150%
ASTM D412 Tensile Strength: psi (kPa) 90 (621)
ASTM D1056 Compression Set: % 15%
ASTM D3574 Density: lbs./ ft.3 (kg/m3) 29 (470)
ASTM D471 Water Absorption: % <5%
Operating Temperature: (°F) -100 to +500
Color Orange/Tan (Black/Gray is an option)
Acrylic or silicone pressure-sensitive adhesive (PSA) is available in sheet format only.
Available Sizes
Thickness (inches).
Thickness (mm)(.79)(1.59)(2.38)(3.18)(3.18)(9.53)(9.53)(12.7)(12.7)
Continuous Roll
36 in. (914 mm)YesYesYesYesYesYesNoNoNo
36 in. X 36 in. (914 mm X 914 mm)YesYesYesYesYesYesYesYesYes

Important Instructions

  • Because Grand Rapids Rubber cannot anticipate or control every potential application, we strongly recommend testing of this product under individual application conditions prior to commercial use.
  • When using PSA options, surfaces must be clean and free of oil, grease, moisture, dust and dirt. Isopropyl alcohol is good for cleaning the surface. Do not remove liner until tape is in proper position. Avoid touching adhesive surface before application.
  • Recommended service temperature of base sponge is -100°F to 500°F (-73°C to 260°C).

Shelf Life

10 years after the date of sale for base material when stored in original packaging at temperatures up to 70°F (21°C) and 50% relative humidity (see the applicable data sheets for pressure-sensitive adhesive options).