HT-840 - Closed Cell Extra Firm Cellular Silicone Foam Pads
Extra firm silicone foam exhibits enhanced sealing capabilities, with comparable tear and tensile strength of a traditional sponge rubber.
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Typical Applications:
• Environmental seals to protect against penetration of dust, moisture, air, or light within outdoor enclosures such as lightning features, HVAC units, and electronic cabinets
• Enclosures requiring a more durable, high closure force gasket
• Press pads requiring greater conformability and even pressure distribution at high temperatures
Product Features & Benefits:
• Patented chemistry and cell structure provide long term performance advantage
• Temperature independency
• UV/Ozone resistant
• Rated to most stringent flame standards
| Compression Set 212 Degrees F | 0.018 |
|---|---|
| Density | 28 lb/ft² |
| Test Methods | ASTM D1056, ASTM D1056, ASTM D412, ASTM D412 |
| Thermal Conductivity | 0.05 btu/(h·ft2·°F) |
| Elongation | 45% |
| Flammability And Outgassing | Flame-Retardant, FMVSS-302 UL 94 HF-1, UL 94 V0, SMOKE DENSITY (Ds) @ 1.5 MINUTES, SMOKE DENSITY (Ds) @ 4 MINUTES |
| Flame Spread Index | <35 |
| Compression Deflection @25% | 20.6 psi |
| Cell Structure | Closed |
| Minimum Temperature Range | -67°F |
| Maximum Temperature Range | 392°F |
| Tensile Strength | 35 psi |
| Material / Substrate | Silicone Foam |
| Compression Deflection 25% (Range) | 20-29.99 psi |
| Compression Set 212 Degrees (Range) | 0-9.99% |
| Density (Range) | 20-29.99 lb/ft3 |
| Environmental and Chemical Properties | Ozone Resistance, UV Resistance |
| Thermal Conductivity (Range) | 0.-.09 btu/(ft²-hr-F°) |
| Elongation (Range) | 0-99% |
| Minimum Temperature (Range) | ≤ -50°F |
| Tensile Strength (Range) | 0-249.99 lb/in2 |