Heat-resistant silicone sheet

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Heat-resistant silicone sheet is a sheet-form industrial material and accessory that offers heat resistance, non-stick properties, elasticity, and good electrical insulation. The product is available in various forms, including solid silicone, foam silicone, and fabric-reinforced silicone, with different thicknesses and colors. Depending on the working environment, silicone sheets can be used as cushioning layers, heat-resistant liners, or processed according to specific dimensions and drawings. Let’s explore this material in detail with Belota in the following article.

What Is a Heat-Resistant Silicone Sheet?

Heat-resistant silicone sheet (commonly referred to as heat-resistant silicon sheet or non-stick silicon sheet) is a sheet material made from silicone rubber. It offers heat resistance, non-stick properties, cold resistance, and maintains its elasticity under changing temperature conditions. Silicone has a polymer structure with a silicon-oxygen (Si-O) backbone, which gives it good thermal stability and durability compared with many conventional rubber materials.

Silicone sheets are commonly available as solid sheets, foam sheets, or fabric-reinforced silicone sheets. They can be used directly as liners, cushioning layers, non-stick surfaces, or forming sheets in industrial equipment and manufacturing processes. With their heat resistance, elasticity, and release properties, silicone sheets are suitable for applications such as heat presses, vacuum presses, solar panel lamination equipment, pressing machines, and other processing equipment requiring a stable contact surface.

Note: “Silicone” refers to a polymer material, while “silicon” refers to the chemical element Si. In the Vietnamese industrial market, the term “heat-resistant silicon sheet” is still commonly used to refer to heat-resistant silicone sheets.

Advantages of Heat-Resistant Silicone Sheets

Good heat resistance: Maintains stability when operating at high temperatures and under frequent temperature changes.
Good elasticity: Easy to compress, press, and form, making it suitable for cushioning layers and liners.
Non-stick properties: The silicone surface provides good release properties, making it suitable for heat pressing, processing, and material-contact applications.
Cold resistance: Maintains flexibility in low-temperature environments.
Resistance to ozone, UV, and weathering: Helps reduce material aging under various environmental conditions.
Electrical insulation: Suitable for insulating layers and pads in electrical and electronic equipment.
Moisture resistance: The hydrophobic surface helps limit water and moisture penetration.
Various specifications: Available in solid, foam, and fabric-reinforced forms with different thicknesses, colors, and dimensions.

Technical Specifications of Non-Stick Silicone Sheets

Specification	Reference Value
Material	Silicone rubber
Working temperature	-60 to 230°C
Hardness	25–80 ±5 Shore A
Tensile strength	Up to approximately 10 MPa
Elongation	Up to approximately 700%
Density	1.10–1.60 g/cm³
Thickness	1–50 mm
Width	1–1.5 m
Surface	Smooth or fabric-coated
Colors	Transparent, white, red, and custom colors
Product forms	Solid sheet, foam sheet, fabric-reinforced silicone
Grade/type	Industrial, food-grade

Common Types of Heat-Resistant Silicone Sheets

Heat-resistant silicone sheets are available in different structures, hardness levels, and forms to meet specific application requirements. Common types include:

Solid Silicone Sheets

Solid silicone sheets have a solid, continuous structure with good sealing performance, elasticity, and heat resistance. They are suitable for applications requiring cushioning, surface isolation, and stable contact between surfaces. Solid silicone sheets are commonly used in industrial machinery, heating equipment, and pressing machines.

In addition, this type of silicone sheet is used in solar panel lamination processes, serving as a cushioning contact layer in lamination equipment where the material needs to withstand heat, provide non-stick properties, and maintain dimensional stability during continuous operation.

Foam Silicone Sheets

Foam silicone sheets have a cellular structure that makes them lightweight, flexible, and capable of good compression and recovery. They are suitable for heat-resistant cushioning layers in heat presses, transfer presses, steam presses, and vacuum tables. The material is also used in veneer presses, laminate presses, and industrial laundry equipment where elasticity, heat resistance, and stable pressure distribution are required.

Fabric-Reinforced Silicone Sheets

Fabric-reinforced silicone sheets consist of a silicone layer combined with an internal reinforcing fabric layer. This structure improves dimensional stability and load resistance compared with standard silicone sheets, making them suitable for industrial applications requiring stable material performance during operation.

Food-Grade Silicone Sheets

Food-grade silicone sheets are manufactured from materials suitable for food-contact applications and may require relevant certifications or standards, such as FDA compliance, depending on the specific product. These sheets are commonly used in food-processing, production, and packaging equipment.

Transparent Silicone Sheets

Transparent or semi-transparent non-stick silicone sheets allow light to pass through, making them convenient when visual inspection of the surface or contact area is required. The material is flexible and can be compressed, pressed, and formed according to specific requirements. These sheets can be used for cushioning layers, liners, or custom silicone components in industrial equipment and systems where visibility of the underlying material is required.

Classifying Silicone Sheets by Thickness

Thickness	Characteristics	Suitable When	Notes
1–2 mm	Thin, flexible, easy to bend and cut	A flexible silicone sheet that can be easily adjusted to a surface is required	Lower compression resistance and shape retention than thicker sheets
3 mm	Balanced flexibility and dimensional stability	Material needs to remain flexible while maintaining its shape	Not suitable when a thick material layer or high compression resistance is required
5 mm	Thicker, with better stability and compression resistance	A firm and stable silicone layer is required during operation	Installation space should be considered
8 mm	Provides a thicker material layer with good compression resistance	A thick silicone layer with good elasticity is required	Less flexible than thinner sheets
10 mm and above	Thick and rigid, with high compression resistance and shape retention	A thicker silicone layer or greater isolation is required	Not suitable for applications with limited installation space or strict thickness requirements

Classifying Silicone Sheets by Color

Heat-resistant silicone sheets are available in various colors to facilitate identification, classification, and selection according to production requirements. Color does not directly determine heat resistance. When selecting a silicone sheet, priority should be given to the material, thickness, hardness, and actual working conditions.

Red Silicone Sheets

Red silicone sheets are a common color in industrial heat-resistant silicone products, making the material easier to identify during use, inspection, and replacement. Red is commonly selected for applications requiring heat resistance, non-stick properties, elasticity, and stability under high-temperature conditions.

White Silicone Sheets

White silicone sheets have a bright surface that makes dust, dirt, and material conditions easier to inspect. They are suitable for applications where cleanliness and surface identification are important.

Transparent/Semi-Transparent Silicone Sheets

Transparent or semi-transparent silicone sheets allow light to pass through, making it easier to observe the surface and contact area underneath. Transparent sheets are suitable when visibility through the material is required, while semi-transparent sheets allow material and contact areas to be identified without requiring complete transparency. They can be used for cushioning layers, liners, or custom silicone components.

Comparing Silicone Sheets with Other Heat-Resistant Rubbers

Each rubber material has different advantages in terms of temperature resistance, chemical resistance, and mechanical properties. The table below provides a general comparison to help select materials based on actual operating conditions rather than heat resistance alone.

Thickness	Characteristics	Suitable When	Notes
1–2 mm	Thin, flexible, easy to bend and cut	A flexible silicone sheet that can be easily adjusted to a surface is required	Lower compression resistance and shape retention than thicker sheets
3 mm	Balanced flexibility and dimensional stability	Material needs to remain flexible while maintaining its shape	Not suitable when a thick material layer or high compression resistance is required
5 mm	Thicker, with better stability and compression resistance	A firm and stable silicone layer is required during operation	Installation space should be considered
8 mm	Provides a thicker material layer with good compression resistance	A thick silicone layer with good elasticity is required	Less flexible than thinner sheets
10 mm and above	Thick and rigid, with high compression resistance and shape retention	A thicker silicone layer or greater isolation is required	Not suitable for applications with limited installation space or strict thickness requirements

Applications of Non-Stick Silicone Sheets

Industrial gaskets and seals: Used for sealing components in machinery and heat-resistant equipment.
Heat-resistant and insulating layers: Used as cushioning layers, liners, insulation, and cushioning materials in areas exposed to heat.
Heat presses and heat transfer presses: Used as layers on pressing machines to help distribute heat and pressure evenly.
Vacuum pressing and laminating: Used as cushioning sheets or together with silicone membranes during vacuum pressing, laminating, and forming processes.
Food processing: Suitable food-grade silicone can be used for components that come into contact with food.
Electrical and electronic equipment: Used as insulating layers, liners, and protective materials for electrical components.
Medical equipment: Suitable silicone grades can be used for components requiring elasticity and dimensional stability.
Automotive and industrial machinery: Used for cushioning, isolation, and other components in machinery assemblies.
Construction and outdoor equipment: Used for applications where resistance to moisture, UV, ozone, and weathering is required.

Where to Buy Heat-Resistant Silicone Sheets?

Belota supplies heat-resistant silicone sheets in various thicknesses, specifications, and material forms for applications such as heat-resistant liners, non-stick surfaces, forming sheets, heat presses, vacuum presses, and solar panel lamination equipment. Products are recommended based on operating temperature, thickness, hardness, dimensions, and actual contact conditions.

Supply: Imported from overseas suppliers, with various silicone grades and specifications available.
Sample inspection: Supports sample, dimension, and technical requirement verification before ordering.
Material consultation: Technical staff assist in selecting the appropriate silicone material based on actual operating conditions.
Cut-to-size service: Silicone sheets can be cut to dimensions suitable for specific applications.

Depending on the product, Belota can provide CO/CQ upon request. Products can be delivered in Ho Chi Minh City and throughout Vietnam, serving factories, workshops, and businesses that require silicone materials for specific industrial applications.

Conclusion

Heat-resistant silicone sheets are available in various structures, thicknesses, hardness levels, colors, and specifications, making them suitable for applications ranging from heat-resistant liners and cushioning layers to non-stick surfaces and electrical insulation. When selecting a silicone sheet, it is important to consider the operating temperature, compression force, contact environment, and installation dimensions to choose the appropriate material. Belota provides material consultation, sample verification, and silicone sheet supply according to specific application requirements.