uk head office

0845 674 4747


Features and Benefits of expanSil™ Silicone Sponge Extrusion

As a silicone sponge extrusion manufacturer of expanSil™, our unique, high quality sponge material offers a variety of features and benefits ideal for many applications.


  • Manufactured in tubing, cord, profiles & sections
  • Densities from 200kg/m³ (soft) to 530 kg/m³ (firm)
  • Excellent Ozone and UV resistance
  • Closed Cell
  • Thermally stable over a wide range of temperatures (-60°C to 230°C)
  • Available in white, riox and grey

Silicone Sponge Extrusions are Supplied and used in the following applications:

  • Electrical Enclosure Seals
  • Insulation
  • Outdoor Lighting Gaskets
  • HVAC Seals
  • Door Seals
  • Outdoor Digital Signage

Silicone Sponge Products

Silicone Sponge Tubing
Silicone Sponge Cord
Silicone Sponge Sections
Silicone Sponge Profiles
expanSil logo

Silicone Sponge

However, Silicone Engineering will continue to use conventional methods, where appropriate, to ensure each silicone sponge extrusion matches your unique requirements and specifications.

expanSil™ is available in several densities from 200 kg/m3 (soft) to 530 kg/m3 (firm) and in standard colours white, red (riox) and grey.

Owing to the properties of cellular materials, Silicone Engineering offers a limited colour matching service for special requirements.

expanSil™GP materials offer all the resilience and versatility of silicone rubber and are ideal for industries where adverse temperatures are an issue or alternatively, where there are uneven sealing surfaces requiring a supple material.

Want to find out more about our products?

Technical data is available on all Silicone Engineering products. For more details, download the product information or speak to one of Silicone Engineering’s dedicated specialists.

+44 845 154 1689

download product details

© 2018 Silicone Engineering All rights reserved