306 – Ethylene Propylene & Ethylene Propylene Diene Rubber (EPM, EPDM)

ASTM D2000 Classification: CA, DA


Temperature Range:

Sulphur Cured:    -50°C to +120°C (-60°F to +250°F)


Temperature Range:

Peroxide Cured:    -50° C to +150°C (-60°F to +300°F)



Ethylene propylene rubber is an elastomer prepared from ethylene and propylene monomers (ethylene propylene copolymer) and at times with an amount of a third monomer (ethylene propylene terpolymers).

EPM and EPDM have a great acceptance in the sealing world because of its excellent resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight. These compounds also withstand the effect of brake fluids and Skydrol and other phosphate ester-based hydraulic fluids. EPDM compounds are not recommended for gasoline, petroleum oil and grease, or hydrocarbon environments.

Special EPDM compounds have good resistance to steam.



EPDM Sulphur cured 

Inexpensive material for normal use, maximum temperature of up to +120°C (+250°F).

EPDM Peroxide cured

For hot water, vapor, alcohols, ketones, engine coolants, organic and inorganic acids and bases. Not resistant to mineral oils. For maximum temperatures of up to +150°C (+300°F).


EMI ReferenceSpecificationHardness IRHD SGTensile Strength (MPa)Elongation at Break %Colour
E404ASTM D200040°1.069500Black
E509High Grade50°1.1110400Black
E606Food Quality 60°1.396480White
E609High Grade60°1.229250Black
E709High Grade 70°1.249210Black
E707WRC Approved 70°1.1210400Black
E807WRC Approved 80°1.1710250Black

Full data sheets for all grades are available on request.

* The information above is supplied in good faith and believed to be correct. This information is supplied upon the condition that persons receiving this will make their own determination as to its suitability for their purposes prior to use. EMI makes no representations or warranties, either expressed or implied with respect to the information or the product to which this information refers.