Typical Properties of Medium Density Closed Cell Silicone Foam
Description: Medium density closed cell silicone foam material designed to be used in gaskets applications that require greater sealing capabilities than a traditional sponge rubber offers. This material is a lightweight silicone foam and provides users with an operating temperature of -67°F to +392°F, with the ability to withstand +482°F on an intermittent basis. Medium density closed cell silicone foam can be utilized to seal electronic, outdoor, and lighting enclosures while providing protection against wind, fire, and rain. Medium density closed cell silicone foam provides users with excellent UV and ozone resistance and is often used as a material to isolate vibration or reduce shock. A UL 94 V-0 and UL 94 HF-1 listed material, Medium density closed cell silicone foam material is formulated with all FDA ingredients per title 21 CFR 177.2600 and meets the physical requirements of the AMS3195 specification.
M&P Sealing’s closed cell silicone foam gasket material is available in densities ranging from medium to an extra-firm density. Medium density closed cell silicone foam can be converted into rolls ranging from as narrow as 1/4″ wide, up to 36″ in width. Available in Grey, the material has a smooth skin on both sides and can be manufactured in a wide range of standard and custom thicknesses. M&P Sealing has the capability to supply Medium density closed cell silicone foam material without adhesive or choose from either our standard acrylic adhesive or our high-temperature acrylic adhesive. Send in a drawing, and let M&P Sealing die-cut or waterjet cut medium density closed cell silicone foam to meet your exact prototype and production requirements.
Specifications
UL 94 V-0 AND UL 94 HF-1
AMS3195
21 CFR 177.2600
| Physical Property | Test Method | Unit of Measure | Typical Values |
|---|---|---|---|
| DENSITY | ASTM D 3574 | pcf | 22 |
| COMPRESSION SET | ASTM D 1056 | % | <5 |
| COMPRESSION DEFLECTION | ASTM D 1056 | psi | 9 |
| TENSILE STRENGTH | ASTM D 412 | psi | 45 |
| ELONGATION | ASTM D 412 | % | 80 |
| THERMAL CONDUCTIVITY | ASTM C 518 | W/m.K | .63 |
| FLAME SPREAD INDEX | ASTM E 162 / D 3675 | N/A | <25 |
| SMOKE DENSITY (TESTED AT 4 MINUTES) (TESTED AT 1.5 MINUTES) |
ASTM E 662 | N/A | <20 <50 |
| TOXIC GAS EMISSIONS RATING | SMP-800C | N/A | PASS |
| WATER ABSORPTION* | INTERNAL: 24 HRS. AT ROOM TEMP. |
% | 1.4 |
| UV RESISTANCE | SAE-J-1960 | N/A | NO DEGRADATION |
| OZONE EFFECT RATING | ASTM D 1171 | N/A | 0 (NO CRACKS) |
| CORROSION RESISTANCE | AMS-3568 | N/A | PASS |
| DIELECTRIC CONSTANT | ASTM D 150 | 1 MHz | 1.42 |
| DIELECTRIC STRENGTH | ASTM D 150 | Volts/mil | 91 |
| DRY ARC RESISTANCE | ASTM D 495 | Seconds | 92 |
| VOLUME RESISTIVITY | ASTM D 257 | Ohms/cm | 10 |
| LOW-TEMPERATURE FLEX AT -67°F (-55°C) |
ASTM D 1056 | N/A | PASS |
| LOW-TEMPERATURE (RECOMMENDED) | SAE J-2236 | °F °C |
-67°F -55°C |
| HIGH-TEMPERATURE (RECOMMENDED) | SAE J-2236 | °F °C |
392°F 200°C |
| HIGH INTERMITTENT TEMPERATURE (RECOMMENDED) | INTERNAL | °F °C |
482°F 250°C |
