Silicone Sponge Sheeting

Here at Viking Extrusions, we have been providing the highest quality silicone sponge sheeting for over 30 years. We have a huge range of specifications and grades available, so we can be sure to have what it is you are looking for.

Our Available Silicone Sponge Sheeting Grades

To find out more about the grades of silicone sponge sheet we supply please click the “view product” buttons below to see available sizes, colours, datasheets and certifications for each grade of sheet. Sheeting grades can also be filtered using the search and filter tools in the sidebar to the left.

If you are unsure of which grade of silicone sheet is most suitable for your application, please contact our team of experienced technical advisors who ill be happy to assist with your enquiry.

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A stack of multicoloured general purpose silicone sponge sheets.

General Purpose Silicone Sponge Sheet

Perfect for applications needing a soft, deformable material, this silicone sponge sheet offers excellent insulation and sealing properties. It operates within a temperature range of -60°C to +200°C and is available in various thicknesses.
The corner of a sheet of high temperature silicone sponge in white.

High Temperature Silicone Sponge Sheet

Ideal for applications needing exceptional heat resistance, this silicone sponge sheet operates from -60°C to +270°C (up to 300°C intermittently). It offers excellent air and watertight properties and is available in thicknesses from 1.5mm to 25mm.
A close up of an illustration of a viking helmet.

FDA Compliant Silicone Sponge Sheet

Ideal for food and pharmaceutical applications, this FDA compliant silicone sponge sheet ensures safety and quality. It operates within a temperature range of -60°C to +200°C and is available in various thicknesses. Additionally, it offers excellent resistance to mildew, UV light, and weathering, making it suitable for a wide range of environments.
A close up of staggered thermally conductive sponge sheets on top of each other.

Thermally Conductive Silicone Sponge Sheet

Ideal for applications requiring efficient heat dissipation, this thermally conductive silicone sponge sheet offers excellent thermal management properties. It operates within a temperature range of -60°C to +200°C and is available in various thicknesses. Additionally, it provides superior resistance to UV light, ozone, and weathering, making it suitable for both indoor and outdoor use.
A pile of Fluorosilicone Sponge Sheets in blue.

Fluorosilicone Sponge Sheet

This fluorosilicone sponge sheet is ideal for applications requiring resistance to fuels, oils, and chemicals. Available in various thicknesses, it provides superior resistance to UV light, ozone, and weathering, making it suitable for both indoor and outdoor use. It operates within a temperature range of -60°C to +200°C and offers excellent sealing and insulation properties.
A roll of BISCO® HT870 Flame Retardant Silicone Sponge in orange.

BISCO® HT870 Flame Retardant Silicone Sponge Sheet

The BISCO® HT870 Flame Retardant Silicone Sponge Sheet is a high-quality material designed for sealing outdoor enclosures, providing cushioning, and protecting electronics from heat and shock. It features excellent memory, low stress relaxation, and flame retardancy, making it ideal for various industrial applications. It is certified to UL94-V0. Temperature Range: -55ᵒC to +200ᵒC
A stack of BISCO® HT800-HT840 Flame Retardant Silicone Sponge sheeting.

BISCO® HT800-HT840 Flame Retardant Silicone Sponge sheet

This versatile silicone sponge sheet offers medium to extra-firm grades, ideal for sealing and protecting communication, electronics, and lighting enclosures. It features excellent memory, low stress relaxation, and exceptional sealing performance against wind-driven rain, fire, and fine particles. The material is flame retardant, UV and ozone resistant, and performs consistently in diverse environments. Temperature range: -55ᵒC to +200ᵒC
A stack of BISCO® BF1000-BF2000 Extra/Ultra Soft Flame Retardant Silicone Sponge Sheeting.

BISCO® BF1000-BF2000 Extra/Ultra Soft Flame Retardant Silicone Sponge Sheet

This extra and ultra-soft silicone sponge sheet is perfect for sealing outdoor enclosures and protecting electronics from shock and heat. It offers excellent memory, low stress relaxation, and superior vibration isolation. The material is flame retardant, UV and ozone resistant, and performs reliably in various environments. Temperature range: -55ᵒC to +200ᵒC.

About Our Silicone Sponge Sheets

Silicone is a hugely popular material for a huge variety of different industries and applications. This is because it has a huge amount of benefits that truly help it to stand out amongst other similar materials. 

Our silicone sponge sheets are phenomenal, they are amazing for all outdoor applications as they are UV, ozone damage and weather resistant. They are also extremely easy to cut to size, meaning that we can meet your specific requirements with ease.

It is also an amazing thermal insulator and can function at a wide range of temperatures. Its excellent insulation also makes it extremely difficult for liquid or gas to pass through the material’s cellular structure.

A pile of silicone sponge sheets in different colours and thickness.

Features

  • Wide operating temperature 
  • Extremely low water absorption 
  • UV and ozone resistance 
  • Compression set resistance 
  • Highly durable 
  • Excellent thermal stability 
  • Excellent sealing capabilities
  • Easy to cut to required size

About Our Service

With 30 years of experience dealing with silicone products, we truly have mastered the highest quality products. We do not only guarantee the highest quality products, but also customer service. We also pride ourselves on short turnaround times and prices that are sure to beat our competitors. 

We can supply silicone sponge sheeting to the following specifications:

  • Available in densities from 150kg/m3 (very soft) to 530kg/m3 (firm)
  • Available in 1000mm x 600mm sheets 
  • Supplied in thickness from 1.6mm to 30mm

What are the advantages of silicone sponge sheet?

Silicone sponge sheet has many advantageous properties including:

What are the applications for silicone sponge sheet?

Silicone sponge sheeting offers excellent compression properties and is used to produce a variety of gaskets and seals. It is especially useful when sealing surfaces are not smooth. Typical applications for silicone sponge sheeting include:

Transfer printing pads

HVAC units

Weather and glazing seals

Sealing for electronic enclosures

Adhesive application pads

Lighting systems

Automotive seals

Locomotive and carriage seals

Domestic appliance seals

What are the differences between open cell and closed cell silicone sponge?

Open Cell Foam

With open cell sponge, each cell or bubble is openly connected to the next cell. As these cells are not separated water, dust and moisture can make its way through the cell structure.

An example of this would be a commonly used sponge for cleaning, which soaks up water by allowing it to pass through each cell to be held within the sponge.

Closed Cell Sponge

Closed cell sponge has very different structure to open cell sponge. In a closed cell sponge each cell is a completely closed separated sphere, with air trapped in each cell. The lack of connectivity between cells means that water, dust or moisture cannot readily pass through the cell structure. Closed cell sponge has very low water absorption and is an ideal material choice for sealing applications where water and dust ingress are to be prevented.

The term “sponge” is generally used to describe a closed cell product and the term “foam” for an open cell product.

Silicone Sponge Sheeting FAQs

Silicone foam is a synthetic rubber product that is commonly used in sheets, gasketing and cords. It can be found in solid, cured form or individual liquid components that are used for field applications.

Yes. Silicone sponge is often used for applications that are needing to seal against water, it’s brilliant for this thanks to its water resistant properties.

It is made from a gum based polydimethylsiloxane (PMD). To create the closed sponge structure the polymer is chemically expanded when heated. Closed cell means that the cells are not interconnected and therefore do not allow water to penetrate the sponge.

Get in touch with Viking Extrusions

Contact our expert team of silicone engineers for advice, quotations or any other queries.

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Current Delivery Times

Silicone Rubber Extrusion

Normal
5 working days

Silicone Extrusion & Secondary Operations

Normal
10 working days

Silicone Rubber Extrusion (New Dies)

Partially Delayed
12 working days

Silicone Rubber Inflatable Seals

Normal
10 working days

Silicone Rubber & Sponge Sheeting

Normal
from 5 working days

Silicone Rubber & Sponge Gaskets

Normal
from 5 working days

EPDM Extrusion

Partially Delayed
3 - 5 Weeks

Compression Moulded Parts

Normal
From 7 Working Days

3D Printed Parts

Normal
5 Working Days

Worldwide Shipping

We ship our goods worldwide using a variety of couriers including DPD, DHL, TNT, UPS and FEDEX. Please contact us to discuss your shipping requirements. 

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Worldwide Shipping

We ship our goods worldwide using a variety of couriers including DPD, DHL, TNT, UPS and FEDEX. Please contact us to discuss your shipping requirements.