Typical Properties of Soft/Medium Density Open Cell Silicone Foam
Description: Soft/medium density open cell silicone foam designed for use in gaskets applications that require a lightweight and easy to compress material. Soft/medium density open sell silicone foam is a non-toxic, non-flammable material, and due to being lightweight, has virtually no outgassing. Soft/medium density open cell silicone foam provides excellent UV and ozone resistance and takes a low compression set. Soft/medium density open cell silicone foam offers resistance to extreme low and high temperature and has a service temperature of -67°F to +392°F, with the ability to withstand +482°F on an intermittent basis. Soft/medium density open cell silicone foam is UL 94 V-0 listed.
M&P Sealing’s open cell silicone foam gasket material is available in soft density and a soft/medium density. Soft/medium density open cell silicone foam can be converted into rolls ranging from as narrow as 1/4″ wide, up to 36″ in width. Available in red or black, 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 Soft/medium density open cell silicone foam without adhesive or with either our standard acrylic adhesive or our high-temperature acrylic adhesive. M&P Sealing has the ability to die-cut or waterjet cut soft/medium density open cell silicone foam to meet your requirements from the design stage to the production stage.
Specifications
UL 94 V-0
| Physical Property | Test Method | Unit of Measure | Typical Values |
|---|---|---|---|
| DENSITY | ASTM D 1056 | pcf | 15 |
| COMPRESSION SET (TESTED D AT 158°F – 22 HRS.) (TESTED D AT 212°F – 22 HRS) |
ASTM D 1056 | % | <1 <5 |
| COMPRESSION DEFLECTION | ASTM D 1056 (MEASURED AT 25%) |
psi | 4 |
| TENSILE STRENGTH | ASTM D 412 | psi | 30 |
| ELONGATION | ASTM D 412 | % | 90 |
| THERMAL CONDUCTIVITY | ASTM C 518 | in/hr/ft2/°F | .49 |
| FLAME SPREAD INDEX | ASTM E 162 | N/A | <25 |
| SMOKE DENSITY (TESTED AT 4 MINUTES) (TESTED AT 1.5 MINUTES) |
ASTM E 662 | N/A | <50 <20 |
| TOXIC GAS EMISSIONS RATING | SMP-800C & BSS 7239 |
N/A | PASS |
| WATER ABSORPTION* | INTERNAL: 24 HRS. AT ROOM TEMP. |
% | 2.5% |
| 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 | 1.38 |
| DIELECTRIC STRENGTH | ASTM D 149 | Volts/mil | 90 |
| DRY ARC RESISTANCE | ASTM D 495 | Seconds | 91 |
| 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 |
