J-Flex – your complete source for specialist silicone sponge sheetings products

Silicone Sponge is an excellent material for uses requiring a soft, compressible material and particularly suited for high temperature applications. There is a full range of standard colours available and J-Flex has the capability to colour match to customer requirements. The sponge is predominately-closed cell with low water absorption.

Sheeting is available in standard rolls 1m wide; other widths can be produced upon request. Our sheetings can also be supplied complete with adhesive backing and slit into strips or punched to produce gaskets to your specific dimensional requirements.

J-Flex enjoys an industry wide reputation as the market leader for specialist sheet rubber products including silicone sponge sheets. This applies to the vast range of silicone sponge sheetings offered EX-STOCK which includes:

▾ 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 250kgs./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

Need more information? In the Downloads section, you’ll find our specifications and brochures. 


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.