THE ENDLESS POSSIBILITIES OF RUBBER
Ethylene Propylene Copolymer EPM or EPDM
|The rubber:||There are two structures, de copolymers (EPM) and the terpolymers (EPDM). De qualities of both are almost identical. Vulcanisation by sulphur and peroxide alike.|
|Resistance and properties:|
It’s the best water resistant rubber available, also in combination with high temperatures. Steam resistancy can be improved by use of compounding. It has excellent atmospheric ageing properties, and is resistant to oxygen and ozone up to approximately 150 degrees Celsius. Acid resistancy is good. This rubber also performs well when exposed to high energy radiation.
A remarkable fact is that this rubber can be made resistant to phosphate ester hydraulic fluids of for instance aeroplanes, an unusual aggressive fluid that even FKM is not resistant to.
EPM/EPDM has poor resistancy to mineral oils and di-ester based lubricants.
EPM/EPDM has many applications such as seals, hoses, washers, etc.