Silicone Rubber Sheet
Silicone sheets are industrial rubber sheets made primarily of silicone. It’s long-term operating temperature can be -60℃ to 260℃, and can withstand short-term temperatures up to 280℃. They can be used to make gaskets, washers, seals and other parts.
Specification
|
Item |
Width |
Thickness |
Color |
|
Silicone Rubber Sheet |
1000mm (Length can be customized) |
0.3-20mm |
translucent, red (matte surface is available) |
|
Sponge Silicone Sheet |
1000mm (Length can be customized) |
3-12mm |
red |
Silicone tube, silicone square strip is available.





In modern industrial manufacturing, selecting the right sealing and insulation material is critical for ensuring product performance, durability, and safety. Among the most widely used materials, silicone rubber sheets and sponge silicone sheets stand out due to their excellent heat resistance, flexibility, and long-term reliability.
But how do you choose between them? And where are they best applied?
What Is a Silicone Rubber Sheet?
A Silicone Rubber Sheet is a dense, solid material known for its excellent mechanical strength and resistance to high temperatures.
Key Specifications:
-
Width: 1000 mm (custom length available)
-
Thickness: 0.3 mm – 20 mm
-
Colors: Translucent, red (matte surface optional)
Key Features:
-
High temperature resistance
-
Excellent tear and wear resistance
-
Strong sealing performance
-
Good electrical insulation
Common Applications of Silicone Rubber Sheets
Silicone rubber sheets are widely used in industries that require durability and precision:
Electronics Industry
-
Circuit board gaskets
-
Electronic component sealing
Automotive Industry
-
Engine component heat protection
-
High-temperature insulation
Industrial Equipment
-
Sealing gaskets
-
Shock absorption components
-
Wear-resistant parts
Printing Industry
-
Heat insulation for stamping equipment
Thanks to their solid structure, these sheets perform well under high pressure and mechanical stress.
What Is a Sponge Silicone Sheet?
A Sponge Silicone Sheet is a lightweight, foam-like material with a porous internal structure. It is designed for applications that require flexibility, cushioning, and sealing.
Key Specifications:
-
Width: 1000 mm (custom length available)
-
Thickness: 3 mm – 12 mm
-
Color: Red
Key Features:
-
Lightweight and compressible
-
Excellent sealing and cushioning
-
Good thermal insulation
-
Vibration absorption
Common Applications of Sponge Silicone Sheets
Sponge silicone sheets are ideal for applications requiring flexibility and sealing:
Industrial Machinery
-
Sealing gaskets for heat press and screen printing machines
-
Dustproof and moisture-proof components
-
Vibration damping for large equipment
Electronics & Electrical
-
Heat-resistant pads for circuit boards
-
Insulation for electronic instruments
Automotive Applications
-
Heat insulation in engine compartments
General Manufacturing
-
Stamped washers and soft sealing components
Silicone Rubber vs Sponge Silicone: Key Differences
| Feature | Silicone Rubber Sheet | Sponge Silicone Sheet |
|---|---|---|
| Structure | Solid | Foam / porous |
| Strength | High | Medium |
| Flexibility | Moderate | High |
| Compression | Low | High |
| Best Use | High-pressure sealing | Cushioning & insulation |
Additional Custom Options
In addition to sheets, manufacturers often provide related silicone products such as:
-
Silicone tubes
-
Silicone square strips
-
Custom-cut gaskets and seals
These options allow businesses to tailor solutions for specific industrial requirements.
How to Choose the Right Silicone Material
When selecting between silicone rubber and sponge silicone sheets, consider the following:
Choose Silicone Rubber Sheet if:
-
You need high strength and durability
-
The application involves pressure or abrasion
-
Structural stability is critical
Choose Sponge Silicone Sheet if:
-
You need flexibility and compression
-
The application requires sealing or cushioning
-
Vibration reduction is important
Conclusion
Both silicone rubber sheets and sponge silicone sheets play essential roles in modern industrial applications. While solid silicone sheets offer strength and durability, sponge silicone sheets provide flexibility and cushioning performance.
Understanding their differences allows manufacturers to select the most suitable material for their specific needs—improving product performance, extending lifespan, and reducing maintenance costs.
As industries continue to demand higher efficiency and reliability, silicone-based materials remain a key solution for sealing, insulation, and protection.
Specification
|
Item |
Width |
Thickness |
Color |
|
Silicone Rubber Sheet |
1000mm (Length can be customized) |
0.3-20mm |
translucent, red (matte surface is available) |
|
Sponge Silicone Sheet |
1000mm (Length can be customized) |
3-12mm |
red |
Silicone tube, silicone square strip is available.





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