Silicone Foam
BISCO® HT-820 Firm Cellular Silicone Foam
Firm silicone foam for high-closure-force gaskets, durable enclosure seals, and demanding applications
BISCO® HT-820 is a firm cellular silicone foam designed for applications that require enhanced durability, sealing strength, and long-term compression performance. It is often selected for gasket designs where a firmer material is needed to maintain sealing integrity in outdoor, electronic, lighting, communication, and industrial assemblies.
Compared to softer silicone foam grades, BISCO® HT-820 offers higher tear and tensile strength, making it a strong choice for more demanding enclosure gaskets and high-closure-force sealing applications. Its compact cell structure helps protect assemblies from dust, moisture, wind-driven rain, flame exposure, and long-term gasket failure caused by compression set or softening.
Why Choose BISCO® HT-820?
BISCO® HT-820 is often used when a gasket needs more firmness, durability, and sealing strength than softer silicone foam materials.
- Firm cellular silicone foam for durable gasketing and sealing applications
- Designed for high-closure-force gasket designs
- Higher tear and tensile strength than lighter silicone foam grades
- Compact cell structure helps improve sealing performance
- Resistant to UV, ozone, extreme temperatures, and flame
- Excellent memory and low stress relaxation for long-term sealing performance
- Strong choice for outdoor, electronic, lighting, and communication enclosure applications
Common Applications for BISCO® HT-820
BISCO® HT-820 is commonly used in applications that require firm compression, durable sealing, and long-term environmental protection.
- High-closure-force enclosure gaskets
- Outdoor communication cabinet seals
- Electrical enclosure gaskets
- Outdoor lighting seals
- Electronics enclosure seals
- HVAC and architectural seals
- Industrial equipment gaskets
- Dust and moisture barriers
- Shock and vibration isolation pads
- Flame-resistant gasket applications
Data Sheets
Custom BISCO® HT-820 Gaskets, Seals & Converted Parts
SRP converts BISCO® HT-820 into custom die-cut gaskets, seals, pads, strips, cushions, and other precision components. Parts can be manufactured to your drawing, dimensions, sample, or material specification, with adhesive backing available when required.
Our team can help review your gasket design, material thickness, compression requirements, adhesive needs, environmental exposure, and production quantities to support a reliable finished part.
Need Custom BISCO® HT-820 Gaskets or Converted Parts?
SRP converts BISCO® HT-820 into custom die-cut gaskets, seals, pads, and other precision components for demanding applications.
Send us your drawing, dimensions, material requirements, adhesive needs, and estimated usage, and our team will help review the best path forward.