Robert McKeown Company, Inc.
Robert McKeown Company, Inc.
111 Chambers Brook Road
Branchburg NJ 08876
Toll Free: 1.800.631.1125
Phone: 908.218.9000
Fax: 908.218.8949
Email: sales@robertmckeown.com
Website: www.robertmckeown.com
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Flexible, compressible COHRlastic silicone closed cell sponge is designed for high-performance gasketing, thermal shielding, vibration mounts and press pads. It is available in six constructions.
R10470, a general-purpose silicone sponge, can be used in most applications.
R10480 has extremely low compression set and maintains its resiliency even under extended compression.
R10460 is flame retardant.When held in a vertical position and exposed to a 2,000 °F flame for 12 seconds, there is no residential flame and less than a 10 second afterglow. Like R10480, it is especially resistant to compression set.
R10450 silicone sponge with fiberglass reinforcement is a unique construction. It has the compressibility of sponge, plus dimensional stability in the X-Y direction. The absence of stretch contributes to the consistent size and shape of die cut parts and eliminates outward extrusion under pressure.
R10490 fluorosilicone sponge rubber can be used as a gasket where it is necessary to contain fluids that would degrade normal silicone sponge and solid materials (special order basis).
R10404 closed-cell conformable silicone rubber sponge is designed for use where both conformability and heat transfer are necessary, such as between printed circuit boards and heat sinks, decal transfer or applying heat activated adhesives.

R10460 meets UL94 Flammability Classification 94HBF. R10470 Medium and R10460 meet UL 1570, 1571 and 1572.
Unit of Measure

Specifications

Test Method Water Absorption

 N/A D1056

Water Absorption

 N/A Less than 5 %

Dielectric Strength

 N/A 145 V/mil

Thermal Conductivity (Average)

 N/A 2.6 x 10-4 x (cal·cm/ºC·cm·s) 0.75 BTU in/h·ft2 ºF

Specific Heat

 N/A 0.3 BTU/lb/ºF
Linear Thermal Expansion1 N/A 1.8 x 10-4 in/in/ºF

Outgassing (NASA Testing)

 N/A Less than 1% weight loss (after 24 h at 257 ºF in vacuum)

Width/Sheet Size

 N/A 36 x 36 in

Color

 N/A Black Gray Orange-tan

Thickness

 N/A 1/16 ±1/64 in1/2 ±3/64 in1/32 ±.010 in1/4 /+3/64 to –1/32 in1/8 ±1/32 in3/16 ±1/32 in3/8 ±3/64 inSpecial order. Minimum quantities apply - 3/32 ±1/64 in

Test Method Compression Deflection

 N/A D1056
Compression Deflection2 N/A 10 psi

Test Method Tensile Strength

 N/A D412

Tensile Strength

 N/A 90 psi

Test Method Elongation

 N/A D412

Elongation at Break

 N/A 150 %

Test Method Compression Set

 N/A D1056

Compression Set (Compressed 50 % for 22 h at 212 ºF)

 N/A 25 %

Test Method Density

 N/A D3574

Density

 N/A .017 lb/in
  • 1 Room temperature to +350 ºF
  • 2 Compressed 25 % at room temperature