EPDM O-rings 40 Shore A

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What is EPDM?

EPDM is the abbreviation of Ethylene, Propylene, Diene and Monomer and is a group of synthetic rubbers of elastomers. It’s made through the polymerization of tene, propene and a diene, this is an unsaturated hydrocarbon with two double bonds.

This makes EPDM a terpolymer, this is a polymer obtained from three monomers.

EPDM rubber has been used since around 1963 and finds many applications in, for example, construction (roof sealing), the automotive sector (sealing rings, sealing strips on windows and doors), belts, conveyor belts and hoses (for example garden hoses), electrical insulation, pond liner and so on. EPDM is marketed under multiple brand names. EPDM roof coverings can be installed fire-proof in accordance with NEN6050. In the Netherlands, roofing systems must comply with the BroofT1 qualification, which means that an EPDM roofing film must be applied that is fly-proof. EPDM pond liner does not meet this requirement.

The ratio between the amounts of the different monomers used largely determines the properties of the EPDM polymer. The ethylene content can vary from around 45 to 80%. Lower ethylene levels yield a rather amorphous polymer; higher ethylene levels a more crystalline polymer. The diene content can range from approximately 1 to 10/12%. With a higher diene content, a higher degree of vulcanization can be obtained, i.e. a "firmer" rubber.

What is EPDM used for?

  • In construction
  • Roof covering
  • Automotive
  • Conveyor belts
  • Sealing
  • Hoses

The advantages of EPDM:

  • It has a temperature working range from -75 °C to +125 °C
  • It is flexible and ages hardly
  • Good resistance to many acids
  • Excellent resistance to heat, water and steam

The downside of EPDM:

  • Not resistant to chlorine
  • It’s not recommended for use in conditions with gasoline, petroleum, fats and hydrocarbon environments

On this page we offer our range of >40 Shore A O-Rings. Search for your specific O ring by using the filters on the left of the page or take your time and browse our wide range of our products. When you can not find the product you are looking for in our >40 Shore A made from EPDM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.

14 products
Most sold arrow_drop_down
ProductDimensionsMaterialHardness (Shore A)CertificationStock
O-Ring 50x5 EPDM 40 Shore A - Black - ses-418878 O-ring Black50 x 5EPDM-EP-EDT-EPR0.19685 Shore ANee58 icon
O-Ring 5.61x1.3 EPDM 40 Shore A - Black - ses-311807 O-ring Black5.61 x 1.3EPDM-EP-EDT-EPR0.051181 Shore ANee50 icon
O-Ring 46.5x3.1 EPDM 40 Shore A - Black - ses-519006 O-ring Black46.5 x 3.1EPDM-EP-EDT-EPR0.122047 Shore ANee55 icon
O-Ring 666.5x5 EPDM 40 Shore A - Black - ses-328991 O-ring Black666.5 x 5EPDM-EP-EDT-EPR0.19685 Shore ANee52 icon
O-Ring 2.03x1.52 EPDM 40 Shore A - Black - ses-311806 O-ring Black2.03 x 1.52EPDM-EP-EDT-EPR0.0598424 Shore ANee52 icon
O-Ring 191.5x5 EPDM 40 Shore A - Black - ses-423845 O-ring Black191.5 x 5EPDM-EP-EDT-EPR0.19685 Shore ANee51 icon
O-Ring 59x5 EPDM 40 Shore A - Black - ses-423843 O-ring Black59 x 5EPDM-EP-EDT-EPR0.19685 Shore ANee50 icon
O-Ring 132.72x6.99 EPDM 40 Shore A - Black - ses-312046 O-ring Black132.72 x 6.99EPDM-EP-EDT-EPR0.2751963 Shore ANee59 icon
O-Ring 158.35x3.53 EPDM 40 Shore A - Black - ses-301410 O-ring Black158.35 x 3.53EPDM-EP-EDT-EPR0.1389761 Shore ANee59 icon
O-Ring 58.62x5.59 EPDM 40 Shore A - Black - ses-1313 O-ring Black58.62 x 5.59EPDM-EP-EDT-EPR0.2200783 Shore ANee57 icon
O-Ring 29x5 EPDM 40 Shore A - Black - ses-328989 O-ring Black29 x 5EPDM-EP-EDT-EPR0.19685 Shore ANee55 icon
O-Ring 210x5 EPDM 40 Shore A - Black - ses-328988 O-ring Black210 x 5EPDM-EP-EDT-EPR0.19685 Shore ANee56 icon
O-Ring 16x5 EPDM 40 Shore A - Black - ses-328990 O-ring Black16 x 5EPDM-EP-EDT-EPR0.19685 Shore ANee51 icon
O-Ring 268x5 EPDM 40 Shore A - Black - ses-423844 O-ring Black268 x 5EPDM-EP-EDT-EPR0.19685 Shore ANee60 icon