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GRADE 4500 FIRM SILICONE SPONGE

“GRADE 4500”
Closed Cell Silicone Sponge
FIRM DENSITY

DESCRIPTION

Silicone sponge is an excellent material for gasketing applications that require a soft compressible material. It is resistant to extreme temperatures and offers good compression set. It is available in Soft, Medium, Firm, and X-Firm Densities. Medium Density is the most popular. It is available in many colors. Generally the surface has a fine fabric finish on both sides and is available in continuous rolls up to 1/2” thick and sheets up to 2” thick.

FEATURES: SPECIFICATIONS

Extreme High & Low Temperatures AMS3196
High Compressibility Mil-R-46089
Low Compression Set ASTM D1056
UV / Ozone Resistant Mil-R-6130
Excellent Gasketing Material Mil-Std 670

Properties	Specification AMS3196	Typical Values
Density, lbs/cubic in. Under 1/4” thick	.030 Max	.028
Density, lbs/cubic in. Over 1/4” thick	.025 Max	.023
Compression Deflection, PSI	12-20	17
Compression Set, 22 hrs @ 212 oF	60 % Max	25
Brittle Point oF	-67	-103
Temperature Range oF	N/A	-103 to +450
Water Absorption	5% Max	Pass
Tensile Strength, PSI	N/A	200
Elongation, %	N/A	225

The above values are typical properties and are provided for information only. They should not be used to set specification requirements. It is up to the end user to determine whether the material is suitable for the intended application.

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