Semi Open Cell EPDM

Semi Open Cell EPDM is an extremely soft and flexible EPDM sponge rubber.

The cell structure of Semi Open Cell EPDM is created in the manufacturing process by physically “bursting” the closed cell structure in order to create a product that is softer and therefore easier to compress than the more traditional sponge rubber. This also means that Semi Open Cell EPDM offers much better recovery after compression.

Semi open cell epdmSemi open cell EPDM

The super-soft nature of Semi Open Cell EPDM provides excellent sealing capabilities once compressed. Due to low compression load the foam can compensate for dimensional deviations in substrates and can therefore be applied to both rough, smooth and low energy surfaces.

Semi Open Cell EPDM offers the following key features:

  •          Resistance to ozone and UV light
  •          High and low temperature resistance
  •          Super-soft
  •          Semi closed / semi open cell structure
  •          Excellent acoustic performance
  •          Good weather-ability
  •          Low compression load
  •          Good compression set
  •          Good water and air sealing
  •          Excellent ageing
  •          Thicknesses available from 3mm to 50mm


Here at Advanced Seals & Gaskets we are able to convert Semi Open Cell EPDM into the following:

  •          Sheets
  •          Continuous rolls up to 1 metre wide
  •          Seal tapes and strip from 6mm wide to 1 metre wide ( in any increment )
  •          Die cut gaskets ( individually cut or kiss cut on rolls )
  •          Die cut washers
  •          Cut pads


Any of the above Semi Open Cell EPDM products can be supplied in either plain or self-adhesive backed.

Semi Open Cell EPDM has many different applications including:

  •          Automotive application
  •          HVAC units
  •          Air duct sealing

Help with Semi Open Cell EPDM

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.