NS-201 Extra Soft Silicone Foam

Cellular 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.

The NS-201 is identical to the NS-200 but features the low smoke/flame/toxicity designation, meeting the SMP 800-C standard. Most importantly, the NS-201’s low stress relaxation and superior memory lower your maintenance costs brought on by gasket failures. Its high compressibility allows greater conformability to variable gap widths, giving you more options in your design.

In Stock with Immediate Availability

KEY FEATURES

• 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
• Complies with the SMP 800-C standard for low smoke, flame, and toxicity

STANDARDS

• UL 94 (QMFZ2.E357733)
• 21 CFR 177.2600
• FAR 25.853
• ASTM D1056 2D2
• ASTM D412
• SMP 800-C
• ASTM D5470
• ASTM D257
• ASTM D149

MATERIAL AVAILABILITY

Available in – Continuous rolls or cut sheets
Thickness available (in) – 0.0625 to 0.500
Roll lengths available (ft) – 25-50, depending on thickness
Typical roll widths (in) – 19-36
Surface finishing – Smooth finish, both sides
Cell structure – Open cell
Color – Black

* Download roll size guide

TEMPERATURE RANGE

-67°F to +392°F  (-55°C to 200°C)

PHYSICAL PROPERTIES

Download Spec Sheet

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.

21 CFR 177.2600

• 21 CFR 177.2600 is a specification from the U.S. Code of Federal Regulations (CFR) used by the Food and Drug Administration (FDA).
• This material is compliant with the requirements of 21 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.

FAR 25.853

ASTM D1056 2D2

• ASTM D1056 is a specification for flexible cellular materials (sponge or expanded rubber) from the American Society for Testing and Materials.
• This material fully passes the ASTM D1056 2D2 specification for flexible cellular materials.
• The specification covers flexible cellular rubber products known as sponge rubber and expanded rubber, but does not apply to latex foam rubber or ebonite cellular rubber.
• Type 2 – Closed-cell rubber.
• Class D – Cellular rubber made from synthetic rubber can meet extreme temperature resistance −103 to 347°F (−75 to 175°C).
• Grade 2 – For Types 1 and 2 cellular rubber, has a compression deflection range from 5 to 9 psi (34.5 to 62.1 kPa).

ASTM D412

• ASTM D412 is a standard test method for evaluating the tensile properties of rubber and elastomers.
• It measures key properties like tensile strength, elongation at break, and tensile modulus, assessing how materials perform under tension.
• The test uses two methods (A and B) to determine a material’s ability to stretch and resist breaking.
• ASTM D412 is critical in industries such as automotive and construction, ensuring rubber products meet performance standards for strength and flexibility.

SMP 800-C

• SMP 800-C is a widely recognized standard used to evaluate the smoke toxicity of materials during combustion, ensuring that products do not release harmful gases in critical environments.
• The standard measures the concentration of specific toxic gases like carbon monoxide, hydrogen chloride, and hydrogen cyanide when materials are exposed to fire conditions.
• SMP 800-C is essential for industries like aerospace and construction, ensuring materials used meet strict safety requirements to minimize toxic exposure during fires.
• Adhering to SMP 800-C helps manufacturers certify their materials as safe and suitable for use in controlled environments where human safety is a priority.

ASTM D5470

• ASTM D5470 is a standardized test method for measuring the thermal conductivity of thermal interface materials (TIMs), used to enhance heat transfer between surfaces.
• It involves placing the material between two metal plates under controlled pressure and measuring the temperature difference to determine its ability to conduct heat.
• The standard focuses on thermal resistance, with results expressed in terms of thermal conductivity (W/m·K), providing critical data for evaluating a material’s efficiency in dissipating heat.
• This standard is widely used in industries like electronics, automotive, and aerospace, where effective thermal management is essential to device performance and longevity.

ASTM D257

• ASTM D257 provides a method for determining the DC resistance or conductance of insulating materials, which is crucial for evaluating the material’s effectiveness as an insulator.
• It outlines procedures to measure both surface resistivity (resistance across the material’s surface) and volume resistivity (resistance through the bulk of the material), offering insights into the material’s performance in different applications.
• The standard emphasizes the importance of controlling environmental factors like temperature and humidity during testing, as these conditions can significantly affect the electrical properties of insulating materials.

ASTM D149

• ASTM D149 measures the dielectric breakdown voltage of insulating materials, determining the maximum voltage a material can withstand before electrical failure.
• Test involves applying a steadily increasing voltage to a material sample until dielectric breakdown occurs, either in air, oil, or other specified environments.
• This standard is essential for materials used in electrical insulation, ensuring safety and performance in high-voltage applications like transformers, cables, and electronic components.
• It helps manufacturers evaluate and qualify insulating materials based on their dielectric strength, contributing to reliable electrical system designs.