HT-840 - Closed Cell Extra Firm Cellular Silicone Foam Tape

MATERIAL/SUBSTRATE:
Silicone Foam
DENSITY:
28 lb/ft²
COMPRESSION FORCE DEFLECTION @ 25% [ASTM D1056]:
20.6 psi
COMPRESSION SET, 22 HOURS @ 212°F @ 50% [ASTM D1056]:
1.8%
THERMAL CONDUCTIVITY:
0.09 W/m°K
ELONGATION (MINIMUM) [ASTM D412]:
45%
OZONE RESISTANCE:
Yes
UV RESISTANCE:
Yes
FLAME RETARDANT:
Yes
FMVSS-302:
Pass
UL 94 HF-1:
Pass
UL 94 V0:
Pass
CELL STRUCTURE:
Closed Cell

Due to supply chain constraints, we are now offering two HT-840 alternative materials:

- Bisco® RS-840 Very Firm Cellular Silicone Sponge

- kSilâ„¢  V-0 Firm Flame Resistant Silicone Sponge

- HT-840 Technical Datasheet
-  Permanent Adhesive - Silicone/Acrylic [2378SL], [SA1911]

* New LSE Acrylic Adhesive Option [654M]

Product Overview

Extra firm silicone foam exhibits enhanced sealing capabilities, with comparable tear and tensile strength of a traditional sponge rubber.

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