BF-1000 | NS-200 | Extra Soft Silicone Foam | National Silicone

NS-200 Extra Soft Silicone Foam

Liquid Silicone Foam

This extra soft silicone foam provides longstanding sealing, cushioning and vibration isolation performance. It is a direct comparable to Rogers Bisco® BF-1000 cellular material.

Most importantly, the NS-200 low stress relaxation and superior memory lowers your maintenance costs brought on by gasket failures. It’s high compressibility allows greater conformability to variable gap widths, giving you more options in your design.

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  • Highly adaptable to various applications and environments
  • Exceptional memory
  • The softness protects your seals while using less force
  • Excellent compressibility and low stress relaxation
  • UV/Ozone resistant



  • UL 94 V-0
  • ADRL Tested


Available in – Continuous rolls or cut sheets
Thickness available (in) – 0.0625 to 0.500
Roll lengths available (ft) – 16.4 – 65.6, depending on thickness
Typical roll widths (in) – 18
Surface finishing – Smooth finish, both sides
Cell structure – Closed cell
Color – Grey, Black, *White, *Red

* Subject to MOQ


-67°F to +392°F  (-55°C to 200°C)



Compression deflection (25%) psi (kPa) 3 (20) ASTM D1056
Density pcf (kg/m3) 17 (270) max. ASTM D1056
Compression set (22h, 100°C) % < 5 ASTM D1056
Tensile strength psi (kPa) 22 (150) ASTM D412
Flammability V-0 & HF-1 rating UL 94

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National Silicone NS220 Ultra Soft Foam

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UL 94 V-0



More Information

UL 94 V-0

  • UL 94 V-0 is a safety and flammability standard by Underwriters Laboratories.
  • This material is compliant with the UL 94 V-0 test standard for flammability.
  • The vertical burn test measures the self-extinguishing time of a vertically oriented polymer specimen. The test evaluates both the burning and afterglow times and dripping of the burning test specimen.
  • In order to be rated UL 94 V-0, the burning must stop within 10 seconds, no flame propagation or dripping.




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