Silicone Sponge Sheet 3mm - High Temperature Resistant Closed Cell Foam Gasket Roll

Our Silicone Sponge Sheet (also known as Silicone Foam Sheet) is a versatile, high-performance elastomeric material manufactured from premium silicone rubber. Utilizing a closed-cell foaming process, this material combines the excellent environmental resistance of solid silicone with the softness, lightweight nature, and conformability of a sponge structure .

Description

High Temperature Resistant Silicone Sponge Sheet Gasket Seal

This product is designed for applications requiring superior sealing, cushioning, thermal insulation, and vibration damping across extreme environments.

2. Key Features & Benefits

Closed-Cell Structure: The non-interconnecting cell structure prevents water wicking, providing excellent buoyancy and effective sealing against dust, air, and moisture with low compressive forces .

Wide Temperature Range: Remains flexible and stable in extreme conditions, typically performing continuously from -60°C to 200°C (-76°F to 392°F), with intermittent resistance up to 230°C+ .

Excellent Resilience & Low Compression Set: Exhibits superior rebound characteristics, maintaining its original thickness even after prolonged compression, which ensures long-lasting gasketing performance .

Environmental Resistance: Highly resistant to UV radiation, ozone, oxidation, and aging. It does not crack or degrade when exposed to harsh outdoor weather conditions or chemical exposure common in industrial settings .

Compliant & Soft: Offers a soft touch and high conformability, allowing it to fill irregular gaps perfectly without exerting excessive structural stress .

Safety & Hygiene: Typically non-toxic, odorless, and physiologically inert. It meets standard requirements for applications in medical devices and food processing industries .

3. Technical Specifications (Reference Data)

Please find below the typical physical properties of our standard grade material:

Property	Typical Value	Unit / Standard
Color	White, Red, Black, Custom	Visual
Density	0.25 - 0.85 (Typically 0.25 for soft grade)	g/cm³
Hardness	5 - 30	Shore A
Tensile Strength	≥ 0.6	MPa
Elongation at Break	100% - 145%	%
Compression Set (70hrs @ 70°C)	< 5	%
Temperature Range	-60 to +200	°C
Dielectric Strength	~ 91	Volts/mil (ASTM D 149)

Note: For specific data sheets or different density grades, please contact us.

4. Available Options

Thickness: Customizable from 0.5mm up to 50mm .

Dimensions: Standard roll width of 1000mm or 1200mm; custom length cutting available .

Adhesive: Optional self-adhesive backing (single or double side with high-temperature resistant glue) for easy installation .

Surface Finish: Natural skin finish or smooth surface.

5. Applications

Ideal for use in the medical, pharmaceutical, food processing, electronics, and automotive industries, including:

Gasketing & Sealing: Door seals, cabinet seals, boiler seals, and environmental protection seals .

Cushioning & Padding: Anti-vibration pads, shock absorption mounts, and equipment cushioning.

Thermal Insulation: High-temperature oven door seals, hot press insulation, and ironing board pads .

Electrical Insulation: Battery pads and electronic component insulation due to its dielectric properties

Product