High Temperature Resistant Silicone Sponge Rubber Sheet for Industrial Applications

When an application requires heat resistance, flexibility, compression recovery and reliable sealing, silicone sponge rubber is an excellent material choice. Our High Temperature Resistant Silicone Sponge Rubber Sheet – Red Silicone Foam Pad Mat is designed for demanding industrial environments where conventional EVA foam, PE foam or standard sponge materials may not provide sufficient thermal stability.

The closed-cell silicone sponge structure combines the flexibility of rubber with the lightweight and cushioning characteristics of foam. It can be used for high-temperature gaskets, sealing pads, thermal insulation, vibration isolation, cushioning and heat press applications.

Silicone sponge products are commonly available in a wide temperature range, with specifications depending on the formulation, density, compression and operating conditions. Published industrial silicone sponge specifications commonly cover approximately -60°C to +200°C or higher, while specialized high-temperature grades can withstand significantly higher intermittent temperatures.

What Is Silicone Sponge Rubber Sheet?

Silicone sponge rubber sheet is a cellular form of silicone rubber containing numerous small cells that give the material its soft and compressible structure.

Compared with solid silicone rubber sheet, silicone sponge provides:

• Lower weight
• Better cushioning
• Higher compressibility
• Thermal insulation
• Good sealing performance with relatively low compression force
• Excellent flexibility
• Resistance to ozone, UV and weathering

Closed-cell silicone sponge is particularly useful where air and water sealing are important.

Key Features of Red Silicone Sponge Rubber Sheet

1. High Temperature Resistance

The main advantage of silicone sponge is its ability to maintain flexibility and physical performance over a broad temperature range.

Depending on the selected silicone compound and application conditions, silicone sponge sheets can be designed for continuous or intermittent exposure to elevated temperatures. Some high-temperature silicone sponge products are specified for temperatures up to approximately +270°C, with higher intermittent-temperature capability.

For this reason, silicone sponge is widely used in heat sealing, thermal shielding, industrial equipment, automotive components and high-temperature gasket applications.

2. Excellent Low-Temperature Flexibility

Silicone rubber also performs well at low temperatures. Industrial silicone sponge specifications commonly extend to approximately -60°C, making the material suitable for applications involving significant temperature fluctuations.

This broad operating window makes silicone sponge particularly useful for outdoor equipment, transportation components and industrial machinery.

3. Soft and Compressible

The cellular structure allows the sheet to compress easily and conform to irregular surfaces.

This makes it suitable for:

• Gaskets
• Sealing pads
• Cushioning pads
• Vibration isolation
• Thermal barriers
• Equipment protection
• Heat press pads

4. Excellent Environmental Resistance

Silicone rubber has strong resistance to ozone, UV radiation, oxidation and weathering, which helps it maintain performance in outdoor and demanding industrial environments.

5. Good Electrical Insulation

Silicone sponge rubber can also provide electrical insulation and is used in electronic and electrical components where thermal resistance and flexible sealing are required.

Typical Applications

High Temperature Gaskets and Seals

Silicone sponge rubber is widely used to manufacture flexible gaskets and seals. Its compressibility allows it to fill small gaps and compensate for surface irregularities.

Typical applications include:

• Industrial machinery
• HVAC equipment
• Electrical enclosures
• Automotive components
• Heating equipment
• Doors and access panels
• Equipment covers

Heat Press Pads

Silicone sponge sheets can be used as resilient pads in heat transfer and heat press equipment. Their flexibility and temperature resistance help provide uniform contact between the heated surface and workpiece.

Thermal Insulation and Heat Shielding

The cellular structure provides thermal insulation, making silicone sponge useful around components exposed to elevated temperatures.

It can be used as:

• Heat-resistant cushioning
• Thermal barrier pads
• Insulation layers
• Equipment protection pads
• Heat-resistant spacers

Vibration and Shock Absorption

The soft sponge structure absorbs vibration and mechanical impact, making it suitable for machinery, automotive and electronic equipment.

Electrical and Electronic Equipment

Silicone sponge rubber can provide a combination of thermal resistance, flexibility, cushioning and electrical insulation, making it useful for selected electronic and electrical applications.

Why Choose Silicone Sponge Instead of EVA Foam?

EVA foam is an excellent material for packaging, sports products, footwear, toys and general-purpose cushioning. However, silicone sponge is more appropriate when the application involves significantly higher temperatures.

The correct material should always be selected according to the actual temperature, compression, chemical exposure and sealing requirements of the application.

Red Silicone Sponge Sheet Specifications

The exact specification can be customized according to the application.

Commercial silicone sponge sheets are available in multiple thicknesses and densities, and manufacturers can provide customized dimensions for different sealing and insulation requirements.

Custom Silicone Sponge Rubber Parts

In addition to supplying silicone sponge sheets, custom fabrication can turn the material into finished components.

Depending on the design, processing options can include:

• Die-cut silicone sponge gaskets
• Custom sealing pads
• Silicone foam strips
• Adhesive-backed silicone sponge
• Custom-shaped insulation pads
• Protective cushioning parts
• Slotted or perforated sheets
• Custom-size foam mats

For production applications, customers can provide a 2D drawing, CAD file, sample or detailed dimensions. We can evaluate the design and recommend the appropriate material thickness, density and fabrication method.

How to Select the Right Silicone Sponge Sheet

Before purchasing high-temperature silicone sponge, consider the following factors:

1. Operating Temperature

Specify both the continuous operating temperature and peak temperature. A material’s maximum intermittent temperature should not automatically be treated as its continuous working temperature.

2. Thickness

Thicker silicone sponge provides greater cushioning and insulation, while thinner sheets are easier to compress and integrate into compact assemblies.

3. Density and Hardness

A softer grade is suitable for low-pressure sealing and cushioning. A firmer grade may be better when greater compression resistance and dimensional stability are required.

4. Compression Requirements

For gasket applications, determine the available compression force and required sealing pressure. Silicone sponge can be selected according to the required compression and recovery characteristics.

5. Chemical Environment

Silicone generally performs well against environmental exposure, ozone and UV, but compatibility with specific chemicals must be verified before production. Certain solvents, fuels and aggressive chemicals may require a different elastomer or a specialized silicone formulation.

Silicone Sponge Rubber Sheet for OEM and Industrial Buyers

For OEM manufacturers, packaging companies, equipment manufacturers and industrial distributors, custom silicone sponge rubber can be supplied according to project requirements.

We can help evaluate:

• Material grade
• Thickness
• Density
• Hardness
• Temperature range
• Sheet dimensions
• Surface requirements
• Adhesive backing
• Die-cut shape
• Required quantity
• Packaging method

For large-volume projects, custom cutting and converting can help reduce material waste and simplify assembly.

Frequently Asked Questions

What temperature can silicone sponge rubber withstand?

The temperature capability depends on the silicone formulation and application. General industrial silicone sponge products may operate around -60°C to +200°C, while specialized high-temperature grades can reach approximately +270°C or higher for intermittent exposure. Always confirm the technical data sheet for the specific grade before use.

Is red silicone sponge rubber waterproof?

Closed-cell silicone sponge has low water absorption and can provide good water and air sealing when properly compressed.

Can silicone sponge be used as a gasket?

Yes. Silicone sponge is commonly used for gaskets, seals, packing materials and thermal sealing applications.

Can you cut silicone sponge into custom shapes?

Yes. Silicone sponge sheets can be converted into custom pads, gaskets, strips and other shapes using suitable cutting and fabrication processes.

Is silicone sponge better than EVA foam for high-temperature applications?

For applications involving elevated temperatures, silicone sponge is generally the more appropriate material because silicone has substantially better thermal stability. EVA foam is better suited to general cushioning, packaging, sports and consumer-product applications.

Get a Quote for Custom Silicone Sponge Rubber Sheet

Looking for high temperature resistant silicone sponge rubber sheet, silicone foam pads, custom gaskets or heat-resistant cushioning materials?

Provide us with your required:

Size + Thickness + Color + Hardness/Density + Quantity + Application + Temperature Requirement

Our team can recommend a suitable silicone sponge material and provide a quotation for your project.

Contact us today for a custom silicone sponge rubber sheet quotation and technical recommendation.