“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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