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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	28.18 mm x 3.53 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	38 mm x 3.5 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	396 mm x 5 mm	EPDM-EP-EDT-EPR	95 Shore A	Nee
O-ring Black	15.4 mm x 3 mm	EPDM-EP-EDT-EPR	90 Shore A	Ja
O-ring Black	170.83 mm x 6.99 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	177.18 mm x 5.33 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	20.25 mm x 2.62 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	205 mm x 5 mm	EPDM-EP-EDT-EPR	90 Shore A	Ja
O-ring Black	272 mm x 4 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	329.80 mm x 3.53 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	37.6 mm x 3 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	430.67 mm x 5.33 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	101.28 mm x 2.62 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	117.2 mm x 1.78 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	120.38 mm x 1.78 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	156 mm x 4 mm	EPDM-EP-EDT-EPR	95 Shore A	Nee
O-ring Black	16 mm x 1.25 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	104.6 mm x 5 mm	EPDM-EP-EDT-EPR	90 Shore A	Ja
O-ring Black	128 mm x 3 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	137 mm x 2.5 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	148.60 mm x 5.33 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	16 mm x 5 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	170 mm x 5 mm	EPDM-EP-EDT-EPR	90 Shore A	Ja
O-ring Black	135 mm x 6 mm	EPDM-EP-EDT-EPR	95 Shore A	Ja
O-ring Black	20 mm x 3 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	16 mm x 4.5 mm	EPDM-EP-EDT-EPR	95 Shore A	Nee
O-ring Black	221 mm x 3.2 mm	EPDM-EP-EDT-EPR	90 Shore A	Ja
O-ring Black	24.6 mm x 3 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	29.83 mm x 2.62 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	32 mm x 1.5 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	4 mm x 2.2 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	306 mm x 4 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	440 mm x 4 mm	EPDM-EP-EDT-EPR	90 Shore A	Ja
O-ring Lila	57 mm x 3.5 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	52.10 mm x 5.34 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	340 mm x 4 mm	EPDM-EP-EDT-EPR	95 Shore A	Ja
O-ring Black	5 mm x 1 mm	EPDM-EP-EDT-EPR	95 Shore A	Nee
O-ring Black	56.6 mm x 7 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	37 mm x 4 mm	EPDM-EP-EDT-EPR	90 Shore A	Nee
O-ring Black	137 mm x 2.5 mm	EPDM-EP-EDT-EPR	95 Shore A	Nee

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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 90 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 90 Shore A made from EPDM, please send us a Direct Enquiry. Together we can discuss the specifications and find the right product for you.

EPDM O-rings 90 Shore A

What is EPDM?