What is EPDM?

EPDM is an abbreviation for the mixture of chemical products utilised to manufacture a widely used synthetic rubber material. The complete chemical composition is ethylene propylene diene monomer.

EPDM is supplied by Alanto in closed or open cell sponge. Each material has different characteristics which can vary.

Strengths of EPDM

Here at Alanto, we supply EPDM closed cell sponge. Densities available include:

  • Ref DK1070 Density 70-100 kg/m3
  • Ref DK1075 Density 75-105 kg/m3
  • Ref DK2010 Density 100-140 kg/m3
  • Ref DK2015 Density 125-165 kg/m3
  • Ref AL43 Density 270-330 kg/m3


A number advantages of open and closed cell EPDM material include:

  • Robust – EPDM closed cell sponge requires minimal compression to provide a seal.
  • Enduring - due to its chemical composition, EPDM does not deteriorate over time and therefore has an excellent lifespan in comparison to other materials.
  • Versatile – EPDM is an approved material and can be used in a variety of commercial applications. The closed cell variation of the material is dust and fibre free.
  • Flame retardant – a selection of Alanto’s EPDM materials pass the FMVSS302 and UL94 HF1 standard.

Open-cell EPDM sponge in particular is:


  • Super soft and conformable
  • Low compression load
  • Ozone resistant
  • Good weather resistance
  • Fungus free
  • Excellent ageing performance
  • Good water sealing
  • Good sound insulation

What uses does EPDM have?

Many of Alanto’s customers use EPDM closed and open cell sponge in a variety of different applications, some of which include:

  • Electrical
  • Aerospace
  • Shipbuilding
  • Railways
  • Automotive industry
  • Transport and Logistics
  • Product protection

Other applications of EPDM across the world

EPDM is a commonly used material that has many uses throughout a variety of sectors...

The roofing industry
EPDM is a common material used in the roofing sector. Many variations of this synthetic rubber are impervious to extreme weather conditions such as hail, snow, wind and UV damage. It can be used as a membrane for a majority of roof types and buildings.

The automotive industry
Variations of EPDM can be used in vehicle applications such as door seals, hood seals, tubing for engines and more.

The construction industry
Residential and commercial buildings use EPDM synthetic rubber as seals and insulators in many applications such as doors, radiators and windows. Often it has an impermeable nature, meaning that the material can function as a sealant.

Find out what products can be produced using EPDM by clicking here.