J-Flex: Your Complete Source for Silicone Sponge Sheets

Silicone Sponge is an excellent material for uses requiring a soft, compressible material and particularly suited for high temperature applications. We have large stocks of White Silicone Sponge available. A full range of standard colours is also available and J-Flex can colour match to your requirements. The sponge is predominately-closed cell with low water absorption.

Some of the silicone sponge products we provide includes:

  • Silicone Sponge Commercial Sheet Grade
  • Metal Detectable Silicone Sponge
  • Food Safe Silicone Sponge
  • ‘HTM’ Thermally Conductive Silicone Sponge
  • Hi-Recovery Expanded Closed Cell Silicone Sponge
  • Red Closed Cell Silicone Sponge

If you are looking for more information or want to enquire about our silicone sponge products then fill out the contact form and we will get back to you as soon as possible. Alternatively you can call us using our number at the top of the page or request a quote, sample or a callback using the buttons below.

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Our Silicone Sponge Products

▾ Red Closed Cell Silicone Sponge - Read More

Red Closed Cell Silicone Sponge Medium Density is ideal for gasket applications that require a soft compressible material.


  • Fabric finish both sides.
  • Good high & low temperature range.
  • U.V. / Ozone resistant.

▾ 'HTM' Thermally Conductive Silicone Sponge - Read More

‘HTM’ Thermally Conductive Silicone Sponge is great for gaskets & pads where good heat transfer is required.


  • Fabric or Smooth finish on one or both sides.
  • Precision moulded sheets.

▾ Hi-Recovery Expanded Closed Cell Silicone Sponge - Read More

Hi-Recovery Expanded Closed Cell Silicone Sponge is ideal when better compression recovery than standard roll material is required.


  • Fabric or Smooth finish on one or both sides.
  • Available in a wide range of densities & colours  –  Made To Order.

▾ Silicone Sponge Commercial Sheet Grade - Read More

Silicone Sponge Commercial Sheet Grade is a good industry standard product popular for most gasket; strip & joint applications.


  • Standard Density 250kg/m³ EX-STOCK  – others made to order.
  • Smooth surface finish both sides.
  • Stock colour – Off White  –  others made to order.

▾ Metal Detectable Silicone Sponge - Read More

Metal Detectable Silicone Sponge is ideal for gasketing & door seals used in sensitive food processing areas.

If any part of this material falls into a food product, this pollution can be detected by standard metal detectable & x-ray detectable equipment.

Don’t take any risks by fitting traditional sponge materials because they are cheap. They also have low levels of conductivity & are very often missed by the strongest detection systems. So don’t compromise – fit J-Flex Metal Detectable Products.

▾ Food Safe Silicone Sponge - Read More

‘Food Safe’ is a medium density closed cell Silicone Sponge, particularly suited to the food and beverage industries, where a soft compressible gasket material with excellent thermal stability is required.

Independently tested, ‘Food Safe’, complies with FDA extraction requirements for aqueous and fatty food, as required under CFR 21 177.2600.  Goods intended for repeated use.


  •  Low compression set
  •  Excellent resistance to weathering
  •  Resistance to U.V. and ozone
  •  Good thermal insulator
  •  Closed cell
  • Wide temperature range: -50°C to +200°C

Available in Light Blue (food industry colour) or White, Food Safe can be supplied in flat sheet or as extruded seals.

FDA extraction testing carried out by Rubber Consultants Ltd – Certificate of Analysis Ref: RC22447

Free White Paper “Silicone Rubber: What’s The Story”

In this paper you can expect to find out everything you need to know about Silicone Rubber such as:

  • Where it comes from
  • The different types of Silicone Rubber
  • It’s life expectancy and
  • The Silicone Rubber market share.

To download your copy, simply complete the contact form.

Why buy from J-Flex?

If you are looking for a friendly and helpful industrial rubber products supplier with great product knowledge and excellent customer service, then you’ve come to the right place.

We supply a vast range of quality items including rubber sheet and an array of fabrications made from premium grade elastomers including silicone and Viton™ – many of which are available for next day delivery.