Key properties and applications of BISCO’s HT-870 foam

BISCO HT-870 is a soft, lightweight silicone foam designed for sealing, cushioning, insulating, and sound damping applications. Here are some of its key properties and applications:

Thermal insulation

HT-870 provides excellent thermal insulation, with a continuous service temperature range of -65°F to 400°F. This makes it suitable for insulating pipes, tanks, and other equipment operating at extreme temperatures.

Vibration damping

The open-cell structure of HT-870 absorbs vibration and mechanical shock very effectively. This makes it useful for damping noise and vibration in appliances, machinery, electronics enclosures, and more.

Low compression set

HT-870 retains its original thickness after compression far better than most foams. This gives it superior performance in long-term sealing and cushioning applications.

Conformability

HT-870 can be readily compressed and takes the shape of surfaces it is applied to. This allows it to make complete contact for sealing irregular shapes and spaces.

Chemical resistance

HT-870 offers good resistance to many chemicals like oils, solvents, and fuels. This enables use in applications where chemical exposure is a concern.

Application examples

• Pipe insulation
• Appliance insulation
• Electronics enclosures
• Gasketing and sealing
• Vibration damping pads
• Cushioning for packaging

Key properties of HT-870 silicone foam

Property	Value
Temperature range	-65°F to 400°F
Density	18 lbs/ft3
Compression set	<10%
Tensile strength	130 psi
Elongation	>200%
Flammability	Self-extinguishing

Frequently Asked Questions

What industries commonly use HT-870 foam?

HT-870 is used across many industries including appliance, aerospace, automotive, electronics, HVAC, industrial equipment, and more. Its versatility makes it a widely applicable insulation and shock absorbing material.

How should HT-870 foam be applied?

HT-870 can be applied by bonding with adhesives, using pressure-sensitive adhesive tape, or mechanically fastening. The surface should be clean and dry before application.

Does HT-870 require any special storage conditions?

HT-870 should be stored in a dry, indoor environment away from sunlight and ozone sources. Ideal storage temperature is 60°F to 80°F.

Can HT-870 withstand outdoor exposure?

While suitable for some outdoor applications, HT-870’s properties can degrade with prolonged UV and moisture exposure. For continuous outdoor use, a protective coating or cladding is recommended.

Is HT-870 foam resistant to fungi and bacteria?

Yes, HT-870 exhibits good resistance to fungi, bacteria, and mildew. Its non-nutritive composition doesn’t support microbial growth.