HT 800

HT-800 is a highly versatile, medium firmness silicone that offers the lightness of a foam, with the enhanced sealing capabilities of a traditional sponge rubber.

It is used to seal and protect various outdoor communication, electronics, and lighting enclosures, while providing protection against wind driven rain and fire. The material is also used to reduce shock or isolate vibration. BISCO® Silicones are available in various thickness’s and manufactured in roll form to allow fabricators to easily convert the material to the proper dimensions.

Features and benefits

  • Excellent memory and low stress relaxtion reduces maintenance costs associated with gasket failures due to compression set and softening
  • Resistance to ultraviolet light, ozone, extreme temperatures, and flame enables consistent performance in all environments
  • Compact cell structure and unique formulation provides enhanced sealing performance to resist penetration of fine particles and wind-driven rain.


Environmental seals to protect against penetration of dust, moisture, air, or light within outdoor enclosures such as lighting fixtures, HVAC units, and electronic cabinets. Vibration isolation in electronic components and transportation vehicles. Shock absorbing cushions and gaskets.

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