Flame Retardant Silicone Sponge

R10400 M is a flame retardant closed cell sponge recognized to UL 94 V-0 requirements. This product is available in seven different thicknesses and delivers medium firmness, making it suitable for a wide range of gasketing applications. The material is flexible and compressible with excellent weather-ability and non-stick properties. In addition, R10400 M is post-cured to minimize volatiles for a clean gasketing application.

HCR Chemistry

R10400 M utilizes the high consistency silicone rubber (HCR) chemistry. This provides superior mechanical strength properties such as improved tear strength, abrasion resistance and tensile strength over other silicone rubber systems. Through the HCR process, R10400 M maintains a very uniform closed cell structure ensuring enhanced sealing properties. This specialty formulation is also designed for use in extreme temperature applications (-100°F to 500°F) allowing the specifying engineer a wide latitude.

Pressure Sensitive Adhesive

Optional acrylic and silicone pressure sensitive adhesives (PSA) are available. The factory-applied PSA eliminates messy secondary adhesive application. The proprietary priming process ensures adequate bond to the silicone sponge.

Features / Benefits

  • UL 94 V-0 recognized, in thicknesses from 1/16″ – 1/2″
  • True closed cell silicone sponge for enhanced sealing properties due to uniform cell structure formed during the HCR curing process.
  • Unique HCR silicone chemistry provides superior mechanical properties (increased tensile/elongation and tear strength) over competitive materials
  • Silicone provides a very wide temperature use range of -100°F to 500°F
  • Excellent environmental resistance to UV and ozone
  • Post-cured at extremely high temperature / time cycle to reduce silicone out-gassing
  • High dielectric strength provides electrical insulation
  • Available with acrylic or silicone PSA as an option

Typical Physical Properties

PropertyTest MethodTypical Value Proposed
Compression Deflection, psi (kPa)ASTM D105610 (69)
Elongation %ASTM D412250
Tensile Strength, psi (kPa)ASTM D412100 (690)
Compression Set %ASTM D105610
Tear Strength, ppi (kN/m)ASTM D62420 (3.5)
Density, lbs./ft.³ (kg/m³)ASTM D357435 (560)
Water Absorption %ASTM D4710.01
Operating Temperature, °F (C)internal-100° to 500° (-73° to 260°)
FDA Extractable (Food Contact)21 CFR 177.2600PASS
Flame RatingUL 94V-0
Flame Spread Index, LsASTM E162Class B
Smoke Denisty, DsASTM E662PASS
Toxic Gas Emissions RatingSMP-800cPASS
Euro Fire Protection (Rail)DIN5510-2PASS
Electrical and Thermal Properties
Dielectric ConstantASTM D1501.78
Dielectric Strength, Volts per milASTM D149200
Volume Resistivity, Ohm-cmASTM D2578^15
Thermal Conductivity, BTUin/hr/ft² (w/m k)ASTM C1770.14 (.02)

Typical Applications

  • Flame retardant lighting gaskets
  • Electronic and environmental high temperature seals
  • Electronic and environmental weather gasketing
  • Flame retardant insulation gasketing for aircraft bulkheads
  • Flame retarant vibration fampining gaskets and seals

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