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EPDM (Ethylene Propylene Diene Monomer) rubber is a synthetic (man-made) elastomer (rubber) with high technical properties which is capable of making and maintaining a strong, long term seal.

The main properties of EPDM are its outstanding heat, ozone, and weather resistance. It is suitable for use against various temperature and pressure combinations coupled with strong Ozone and UV stability and resistance to degradation.

EPDM is compatible with, hot and cold water, both fresh and saline and alkalis.

It has excellent electrical insulating properties and good resistance to ketones, ordinary diluted acids, and alkalis. Its resistance to polar substances and steam is also good. It is not suitable as a seal against most oils, hydrocarbons, halogenated solvents, and concentrated acids.

Typical operating temperatures

-45°C to +120°C

Well known compounds include DuPontTM Viton®

Fluoroelastomers operate efficiently under severe chemical conditions and at higher temperatures where many other seal materials cannot survive. According to grade, they are well suited to arduous conditions with petroleum fuels and mineral-based hydraulic fluids, and many solvents.

Temperature Range: Between -20°C and +205°C