BISCO® HT-820 Silicone Foam
Rogers BISCO® HT-820 Silicone Foam is a firm-density, open-cell silicone foam engineered for applications requiring high closure force, rugged sealing, and mechanical durability. With enhanced tear and tensile strength, HT-820 offers sponge-like performance with the longevity and flame resistance of cellular silicone. Its ability to resist UV, ozone, and extreme temperatures makes it ideal for demanding gasketing, sealing, and thermal barrier applications in transportation, industrial, and electronics markets.
Applications include: Active safety, cold supply chains, gap filling, gasketing and sealing, shock absorption, and vibration management.
- Resists UV, ozone, and extreme temperatures
- Ideal for enclosure gaskets, environmental seals, and thermal shielding in high-demand environments
- Available in thicknesses from 0.031 in to 0.250 in
| Property | Specification |
| Backing (Carrier) Material | Firm open-cell silicone foam |
| Adhesive Material | High performance acrylic, high temperature silicone PSA, or plain PSA |
| Density (Metric) | 384 kg/m³ |
| Density (Imperial) | 24 lb/ft³ |
| Compression Force Deflection (kPa) | 106 kPa |
| Compression Force Deflection (PSI) | 15.3 psi |
| Compression Set (22 hrs. at 100°C/50%) | 21–33% |
| Water Absorption | 0.5% (by weight) |
| Thermal Conductivity (K Value) | 0.09 |
| Tensile Strength (kPa) | 345 kPa |
| Tensile Strength (PSI) | 50 psi |
| Elongation at Break | 55% |
| Shielding Effectiveness (Average 300kHz - 2.5GHz) | |
| Product Color | Gray |
| Dielectric Strength | 66 V/mil |
| Volume Resistivity | 10¹⁴ ohm-cm |
| Insulation Resistance | |
| Certifications | UL 94 V-0; meets FMVSS 302, ASTM E162, ASTM E662, AMS3196 compliant |
| Thickness (Imperial) | 0.031-0.25" |
| Thickness (Metric) | 0.79-6.35 mm |
| Maximum Operating Temperature (Celsius) | 200°C |
| Maximum Operating Temperature (Fahrenheit) | 392°F |
| Minimum Operating Temperature (Celsius) | -55°C |
| Minimum Operating Temperature (Fahrenheit) | -67°F |
