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ThermoSil Pads #21 High-Performance Silicone Foam

ThermoSil Pads #21 is a high-performance silicone foam material designed for gaskets, seals, cushions and fire barriers, operating reliably in extreme temperatures from -55°C to 200°C with UL94 V-0 flame retardancy.


Categories: Foam Materials/Silicone Foam
Size: Customizable
Thickness: Customizable
Color: Customizable
Remarks: For detailed physical property specifications and technical data sheets for ThermoSil Pads #21, please contact our technical support team.

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Product Description
ThermoSil Pads #21 represents advanced engineering in silicone foam technology, specifically formulated for high-demand applications requiring thermal stability, flame retardancy, and non-toxicity. This premium material maintains structural integrity and functional performance across extreme temperature ranges from -55°C to 200°C, making it ideal for critical components in harsh environments. Available in both glossy and matte surface finishes, ThermoSil Pads #21 offers exceptional compression recovery and creep resistance, ensuring long-term reliability in sealing and cushioning applications. The material's comprehensive technical profile includes superior electrical insulation properties and thermal conductivity specifications that meet the most demanding industry standards, while complying with global environmental regulations including RoHS, REACH, and ELV.
Product Features
  • Exceptional temperature resistance from -55°C to 200°C for extreme environment applications
  • UL94 V-0 flame retardancy rating for enhanced safety and compliance
  • Density of 0.22±0.04 g/cm³ providing optimal balance of weight and performance
  • Compression force of 20±10 kPa at 25% compression for reliable sealing
  • Compression set ≤5.0% ensuring excellent recovery properties
  • Tensile strength ≥0.15 MPa for mechanical durability
  • Elongation ≥70% allowing flexibility in various applications
  • Superior electrical insulation with dielectric strength ≥2.0 kV/mm
  • Volume resistivity ≥1.0×10¹⁴ Ω·cm for excellent electrical protection
  • Thermal conductivity of 0.06±0.01 W/(m·K) for effective thermal management
  • Applications
  • Gaskets and seals for transportation equipment requiring temperature resistance
  • Thermal insulation in communication and electrical equipment enclosures
  • Vibration dampening and cushioning in electronic products and components
  • Fire barriers in industrial machinery and equipment
  • Protective padding in household appliances
  • Electrical insulation in high-voltage applications
  • Thermal management solutions in heat-generating devices
  • Environmental sealing in outdoor and weatherproof equipment
  • Shock absorption in precision instruments and delicate components
  • Compression pads in medical and laboratory equipment
  • Additional Information
    ThermoSil Pads #21 can be custom-fabricated to meet your specific application requirements. Our advanced manufacturing capabilities allow for precise die-cutting, water jet cutting, and CNC processing to create complex shapes and configurations. Custom thicknesses, densities, and surface treatments are available to optimize performance for your unique operating conditions. Minimum order quantities apply for customized solutions, with typical lead times of 2-3 weeks depending on specifications. Contact our technical team for engineering support, material selection guidance, and application-specific recommendations.
    Shipping & Payment Information
    • Business Scope: Worldwide
    • Payments Terms: T/T 100%, T/T 50%, COD, 30 days
    • Mode of Transport: By air, by land, by sea
    • Order Processing: Standard orders ship within 3-5 business days, please contact us in advance for large orders
    • Return Policy: Items can be returned within 7 days for quality issues, shipping damage requires documentation

    * Please contact our customer service team for more details on shipping and payment.