What is EPDM-mechanical seal_o ring suppliers_o ring vendors

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2022

What is EPDM

We use EPDM rubber in sealing solutions. It is an abbreviation for “Ethylene-Propylene-Thieen-Methylene” and is a group of synthetic rubbers/elastomers. EPDM is obtained by the co-polymerization of ethylene (= ethylene), propylene (= propylene) and a die, which is an unsaturated hydrocarbon with two double bonds. EPDM is therefore a ter-polymer, a polymer obtained from three monomers.

The process of rubber

After polymerisation, a thermoplastic polymer is obtained, and one of the two double bonds of the monomer remains intact. This allows the polymer to be vulcanised, where standard sulphur bridges are formed between the polymer molecules. Mixed with soot and/or other fillers, a synthetic rubber is then obtained. The ratio between the quantities of the various monomers used largely determines the properties of the EPDM polymer.

The benefits of EPDM rubber

EPDM has many attractive properties, such as:

High elasticity up to 400% over a temperature range of -35 °C to +120 °C
Good resistance to hot water, many bases, acids (including fatty acids) and salts and ozone and UV rays.
Excellent resistance to heat, water and steam, alkali, mildly acidic and oxygenated solvents, ozone and sunlight (UV).
Resistant to the effect of brake fluids and other hydraulic fluids based on phosphate esters.
Special EPDM compounds have good resistance to steam.
With EPDM sulphur vulcanisation you get a cheap material for normal use with a maximum temperature of + 100°C (+212°F).
With EPDM peroxide vulcanization it is resistant to hot water and/or low temperature steam, ketones, alcohols, engine coolants, organic and inorganic acids and bases. For system temperatures up to +120?C (+ 248?F) and maximum temperatures up to + 150 °C (+ 300 °F).