Firm EPDM Sponge

EPDM is an abbreviation for Ethylene Propylene Diene Monomer. This is a synthetic elastomer that is highly flexible and relatively soft and when combined with its closed cell structure means that it offers excellent sealing capabilities.

Advanced Seals & Gaskets Ltd convert a wide selection of EPDM sponge rubber grades that range from a very soft sponge to a firm EPDM sponge. Along with this we can offer many other grades of EPDM sponge such as, Semi open cell EPDM, and High temperature EPDM grades.

Firm EPDM Sponge

Advanced seals & Gaskets Ltd are able to manufacture many products from these materials in almost any size, shape or format including.

  •             Firm EPDM sponge rubber Rolls
  •             Firm EPDM sponge sheeting
  •             Firm EPDM sponge gaskets (individually cut OR kiss cut in rolls)
  •             Firm EPDM sponge washers
  •             Firm EPDM sponge seals
  •             Firm EPDM sponge Extrusions
  •             Firm EPDM sponge Tapes and Strip


All the above can be manufactured in either plain or with a self-adhesive backed, peel-able liner on one or both sides.

Our Firm grade EPDM is specially formulated to produce a higher density product that is firmer than Medium EPDM Sponge and Firm EPDM Spongethe standard grades of EPDM. This is designed for customers that require a more resilient material that will not compress as much as the standard grades under load, also this material benefits from increased tear strength and suits some of the more demanding applications.

Our Firm EPDM sponge (firm grade) is a high specification material that meets ASTM D1056 2A3 and is commonly used in many applications including Automotive, White goods, Marine, defence, building and construction to name but a few.

The physical composition of Firm EPDM Sponge is closed cell and flexible which in turn ensures that it is highly suitable for sealing against air, water and particles and many mechanical attributes such as , sound absorption ,anti-vibration, thermal insulation, thermal resistance and excellent sealing properties.

Firm EPDM sponge has many characteristics including:

  •          Excellent ageing
  •          Excellent Sealing properties
  •          Thermal insulation & resistance
  •          High flexibility
  •          Closed cell structure
  •          Ozone resistance
  •          UV resistance
  •          Resistant to cold


 If you are unsure to the suitability of Firm EPDM Sponge for your particular requirement then our highly experienced sales staff will be more than happy to discuss this with you in greater detail.

Quality control of Firm EPDM Sponge

Our range of Firm EPDM Sponge products is quality controlled at every stage of production using our Quality Management System which is certified to ISO 9001.

Help with Firm EPDM Sponge

If you would like to speak to a representative to discuss your specific application or requirements please call our sales office direct on 01384 469100, alternatively you can send an E-mail. Simply click on the link and forward us your details along with your question and we will contact you immediately.

Advanced Seals and Gaskets Ltd

Tel: 01384 252555


ISO 9001

The information presented is based on the present level of knowledge and experience.

All information and recommendations contained in this publication are to the best of our knowledge. Since the conditions of use are beyond our control, users must satisfy themselves that products are suitable for the intended processes and applications.