Silicone Products Silicone Sheets

What Are Solid Silicone Sheets?

Solid silicone sheets are dense, silicone rubber materials engineered for sealing, gasketing, insulation, vibration isolation, and other applications requiring durability, flexibility, and temperature stability. Unlike silicone sponge, solid silicone does not contain a cellular structure, providing a denser material with consistent mechanical properties and dependable long-term performance.

Bellofram Elastomers manufactures solid silicone rubber sheets in durometers ranging from 30 to 80 Shore A and thicknesses up to 3/8”. Available in multiple colors, grades, and formulations, our silicone sheeting can be tailored to meet a wide range of industrial, aerospace, electronics, automotive, and food-processing requirements.

Key Takeaways

• Solid silicone sheets provide dense, rubber construction for durable sealing and insulation.
• Available in durometers ranging from 30 to 80 Shore A.
• Available in thicknesses up to 3/8”.
• Designed to perform across temperatures from -85°F to +400°F.
• Excellent compression set resistance supports long-term sealing performance.
• Available in multiple colors, grades, and formulations, including FDA-grade silicone options.
• Supplied as silicone sheet material or rolls.
• Can be converted into custom-cut gaskets and application-specific shapes.
• Ideal for aerospace, electronics, automotive, food processing, industrial equipment, and other demanding applications.

Why Choose Solid Silicone Rubber Sheets?

Solid silicone rubber sheeting combines flexibility with the mechanical durability and thermal stability required for demanding sealing applications.

Because solid silicone is dense, it provides dependable material strength while maintaining the flexibility needed to conform to mating surfaces, isolate vibration, provide insulation, and protect equipment from environmental contaminants.

Benefits of Solid Silicone Sheets

BENEFIT	WHY IT MATTERS
Wide Temperature Range	Maintains reliable performance from -85°F to +400°F for demanding hot and cold environments.
Durable Solid Construction	Dense, non-cellular silicone provides dependable mechanical performance for long-term sealing and gasketing applications.
Excellent Compression Set Resistance	Helps the material maintain sealing effectiveness after prolonged compression.
Flexible Hardness Options	Durometers from 30 to 80 Shore A allow material hardness to be matched to application requirements.
Custom Formulations	Multiple grades, colors, and formulations provide flexibility for mechanical, environmental, and regulatory requirements.
Custom Fabrication	Sheet material can be converted into precision-cut gaskets and custom-shaped silicone components.

Solid Silicone Sheet Options

Bellofram Elastomers offers silicone rubber sheet material in a variety of hardnesses, thicknesses, grades, colors, and formulations. Material selection can be tailored to the application’s flexibility, temperature, sealing, mechanical, and regulatory requirements.

Solid Silicone Sheet Options

OPTION	AVAILABLE CAPABILITY
Durometer	30 to 80 Shore A.
Thickness	Available up to 3/8".
Temperature Range	Designed for performance from -85°F to +400°F.
Formats	Available as silicone sheet material or silicone rolls.
Colors	Multiple color options are available to support application requirements.
Grades and Formulations	Multiple silicone formulations are available, including FDA-grade silicone options.
Custom Fabrication	Available as custom-cut gaskets and application-specific silicone shapes.

Solid Silicone Sheets vs. Silicone Sponge Sheets

The primary difference between solid silicone and silicone sponge sheeting is material structure. Solid silicone is dense and non-cellular, while silicone sponge incorporates a cellular structure that makes the material lighter and more compressible.

Solid Silicone Sheets vs. Silicone Sponge Sheets

FEATURE	SOLID SILICONE SHEETS	SILICONE SPONGE SHEETS
Construction	Dense, non-cellular silicone rubber.	Closed-cell silicone structure.
Density	Heavier and denser.	Lightweight.
Compression	Less compressible and typically requires greater force to deform.	Highly compressible with relatively low closure force.
Typical Priority	Durability, strength, and dense rubber sealing..	Environmental sealing, cushioning, insulation, and gap filling.
Common Applications	Dense gaskets, seals, pads, barriers, and industrial components.	Gaskets, enclosure seals, cushioning, vibration isolation, thermal barriers.

For applications requiring a lighter, more compressible cellular material, explore our BELLOFOAM™ Silicone Sponge Sheets.

Common Applications for Solid Silicone Sheets

Silicone rubber sheets are used across a wide range of applications where flexibility, temperature resistance, sealing performance, and long-term durability are important.

Common Applications for Solid Silicone Sheets

APPLICATION	HOW SOLID SILICONE HELPS
Gaskets and Seals	Provides flexible, durable sealing between mating surfaces in demanding temperature environments.
Thermal Insulation	Provides stable performance in assemblies exposed to high or low temperatures.
Vibration Isolation	Flexible silicone material can help isolate vibration between components and assemblies.
Environmental Protection	Helps block environmental contaminants from sensitive components and equipment.
Aerospace Components	Supports sealing and insulation applications requiring reliable performance through demanding temperature conditions.
Electronics	Provides flexible insulation, sealing, and environmental protection around sensitive equipment.
Automotive	Supports gasketing, sealing, vibration isolation, and temperature-resistant components.
Food Processing Equipment	FDA-grade silicone options are available for applications with applicable regulatory requirements.

Custom Cut Silicone Gaskets and Shapes

Bellofram Elastomers can supply full silicone sheets and rolls or convert silicone sheet material into custom gaskets and application-specific shapes.

Our in-house fabrication capabilities allow engineers and manufacturers to source silicone material and finished components from a single supplier. Parts can be produced in custom dimensions and geometries to help simplify sourcing and streamline downstream assembly.

Custom silicone sheet components can include:

• Flat gaskets
• Seals
• Pads
• Insulation components
• Protective barriers
• Vibration-isolation components
• Custom shapes and cutouts

For custom silicone components that require fast turnaround without investing in traditional hard tooling, explore our Flash Cut Silicone capabilities.

High-Temperature Silicone Sheets

Silicone rubber is particularly useful for applications that must continue performing through wide temperature swings. Bellofram Elastomers silicone sheets are designed to remain stable and functional from -85°F to +400°F, providing a high-temperature rubber sheet option for demanding industrial environments.

This broad operating range makes silicone sheeting useful in equipment that may encounter:

• Elevated operating temperatures
• Extreme cold
• Thermal cycling
• Heat-generating electronics
• Industrial machinery
• Aerospace environments
• Automotive applications

Material requirements vary by application, so operating conditions such as continuous temperature, media exposure, compression, and required hardness should all be considered when selecting a silicone sheet.

When Should You Choose Solid Silicone Sheeting?

Solid silicone sheet may be the right material when an application requires the durability and flexibility of silicone without the compressibility of a cellular sponge material.

Solid silicone may be ideal when:

• A dense, non-cellular elastomer is required.
• The application is exposed to temperatures between -85°F and +400°F.
• Long-term compression set resistance is important.
• Different hardness levels are needed to optimize flexibility or rigidity.
• A custom gasket, seal, pad, or insulation component is required.
• Environmental contaminants must be blocked from an assembly.
• Custom colors, grades, or formulations are needed.
• An FDA-grade silicone option is required.

If lower closure force, cushioning, or a lightweight cellular structure is more important, consider our Silicone Sponge Sheets.

Why Choose Bellofram Elastomers for Silicone Sheets?

Bellofram Elastomers provides silicone rubber sheet materials as well as custom fabrication capabilities, helping engineers and manufacturers source both raw material and finished silicone components from one supplier.

Bellofram Elastomers offers:

• Solid silicone rubber sheets and rolls.
• 30 to 80 Shore A durometer options.
• Thicknesses up to 3/8”.
• Operating temperatures from -85°F to +400°F.
• Multiple colors, grades, and formulations.
• FDA-grade silicone options.
• Custom-cut gaskets and application-specific shapes.
• In-house flash cutting capabilities.
• U.S.-based manufacturing and technical support.

Frequently Asked Questions About Silicone Sheets