HT-820 | NS-140 | Firm Silicone Foam | National Silicone

NS-140 Firm Silicone Foam

Liquid Silicone Foam

This firm grade silicone foam is cast from liquid silicone and is designed to provide long term sealing and reliability in various weather conditions and applications. It is a direct comparable to Rogers Bisco® HT 820 cellular material.

Most importantly, it offers UL 94 V-0 flame resistance, FDA compliance for repeated use in contact with food and has it’s compact cell structure provides superior sealing performance.

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KEY FEATURES

  • Highly adaptable to various applications and environments
  • Enhanced sealing capabilities
  • Low closure force
  • Flame retardant
  • Excellent compressibility
  • UV/Ozone resistant

 

STANDARDS

  • UL 94 V-0
  • CFR 177.2600

MATERIAL AVAILABILITY

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 (for 0.0625 to 0.03125)
Typical roll widths (in) – 34 (for 0.125 to 0.500)
Surface finishing – Smooth finish, both sides
Cell structure – Closed cell
Color – Grey, Black, *White, *Red

*Subject to MOQ

TEMPERATURE RANGE

-67°F to +392°F  (-55°C to 200°C)

 

PHYSICAL PROPERTIES

Properties
Compression deflection (25%) psi (kPa) 16 (110) ASTM D1056
Density pcf (kg/m3) 31 (500) max. ASTM D1056
Compression set (22h, 100°C) % < 1 ASTM D1056
Tensile strength psi (kPa) 58 (400) ASTM D412
Flammability V-0 rating UL 94

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National Silicone NS140 Firm Foam data sheet

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SILICONE FOAM GRADES

 

ACCREDITATION’S

UL Logo - National Silicone
UL 94 V-0

FDA Logo
FDA 21 CFR Section 177.2600

ARDL Logo
ARDL-Tested

 

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.

 

CFR 177.2600

  • CFR 177.2600 is a specification from the U.S. Code of Federal Regulations (CFR) regulated by the Food and Drug Administration (FDA).
  • Our FDA silicone material is compliant with the requirements of CFR 177.2600.
  • The specification covers rubber articles intended for repeated use and may be safely used in producing, manufacturing, packing, processing, preparing, treating, packaging, transporting, or holding food, subject to the provisions of this section.
  • Meaning this material is generally recognized as safe, and can be used in applications where repeated use in contact with food occurs.

 

 

 

Focused on Partnerships

We support our customers, and prospects throughout the purchase journey. Our team is made up of experienced professionals and highly trained engineers who will help with material selection, sampling, testing, and any application support you might need to accomplish your goals.

 

 

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