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Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Specifications
Brand Name :
3A Rubber
Model Number :
3A1002
Certification :
ISO9001
Place of Origin :
China
MOQ :
100kgs
Price :
USD6.00/kg
Supply Ability :
100000kgs/month
Delivery Time :
7-15days
Packaging Details :
packing in rolls and pallets
Payment Terms :
L/C,T/T,D/P,Western Union
Description
Closed Cell Silicone Sponge Sheet 20-25 Shore A, 0.8-50mm Thickness
Product Overview

A high-performance sealing material with excellent temperature resistance and impermeable closed-cell structure.

Product Specifications
Material Virgin silicone sponge, silicone foam
Cell Structure Close cell
Available Colors Red, white, grey, black, beige, brown, blue, etc.
Surface Finish Double impression fabric, smooth
Tensile Strength 100-200 PSI
Hardness 5, 10, 15, 20, 25, 30, 35, 40+/-5 shore A (currently 20-25 shore A)
Elongation 100%
Density 0.35-1.00 g/cm³
Temperature Range -40°C to +220°C (momentary maximum 260°C)
Standard Sizes 0.8-50mm * 1.0m * 10m
0.8-50mm * 1.2m * 10m
5.0-50mm * 1.5m * 10m
Key Features

A compressible foam material with completely sealed gas-filled cells, created through specialized expansion and curing processes of silicone rubber. This structure provides exceptional impermeability to air and water.

  • Waterproof & Airtight Seal: Excellent barrier against moisture, air, dust, and many gases
  • Low Compression Set: Maintains sealing force and returns to original shape after compression
  • High-Temperature Resistance: Continuous range from -60°C to 200°C (-76°F to 392°F)
  • Environmental Resistance: Withstands weathering, UV radiation, ozone, and many chemicals
  • Flame Retardant: Meets UL 94 V-0 standards for electrical and transportation uses
  • Buoyant: Naturally floats due to sealed-cell structure
Selection Parameters
  • Thickness: 0.8mm (1/32") to 12mm (1/2") or more
  • Density: 15 to 35 lbs/ft³ (pcf)
  • Firmness: Asker C 10 (very soft) to Asker C 40 (firm)
  • Compression Force Deflection (CFD): Critical for seal design and closure force calculations
  • Curing Types:
    • Peroxide-Cured: Standard industrial grade
    • Platinum-Cured: For medical, food contact, and high-purity applications
Common Applications
  • Environmental Sealing: Outdoor LED lighting, electrical cabinets, HVAC systems, automotive/aerospace
  • EMI/RFI Shielding: When laminated with conductive materials
  • Thermal Insulation: High-temperature pipe and fitting insulation
  • Cushioning & Damping: Vibration damping for sensitive equipment

Material is typically die-cut into custom gaskets or available in rolls/sheets for fabrication. Often comes with pressure-sensitive adhesive (PSA) backing for easy installation.

Product Images
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Close cell silicone sponge sheet sample
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Silicone foam sheet in various thicknesses
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Industrial application of silicone sponge gasket
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Custom die-cut silicone sponge parts
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Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance

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Product Detail
Brand Name :
3A Rubber
Model Number :
3A1002
Certification :
ISO9001
Place of Origin :
China
MOQ :
100kgs
Price :
USD6.00/kg
Contact Supplier
video
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance
Closed Cell Silicone Sponge Sheet 20-25 Shore A with 0.8-50mm Thickness and High-Temperature Resistance

SANHE 3A RUBBER & PLASTIC CO., LTD.

Verified Supplier
12 Years
hebei
Since 2007
Business Type :
Distributor/Wholesaler, Agent, Importer, Exporter, Trading Company, Seller
Main Products :
Industrial Rubber Sheet, Silicone Rubber Sheet, High Temperature Rubber Sheet
Total Annual :
2000000-5000000
Employee Number :
800~1000
Certification Level :
Verified Supplier
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