Jonal Laboratories
High Temperature Silicone Rubber Seals & O-Rings for Aerospace
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Design Assistance
Chemistry
Fluorosilicone
Fluorocarbon
Urethane (Castable, Millable, Foam)
Nitriles
Chloroprene
Butyl
Ethylene-propylene
Natural Rubber
Styrene-butadiene
Laboratory
Quality
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Ethylene-propylene

E.P.D.M. rubber is a terpolymer of ethylene, propylene and a small percentage of a diene. E.P.D.M. gained acceptance in the seal industry for its excellent ozone and chemical resistant characteristics. They are particularly useful when sealing phosphate-ester hydraulic fluids and fluids containing a glycol base in brake systems.

E.P.D.M. has good resistance to polar solvents such as M.E.K. and acetone. It is also highly recommended for resistance to steam, hot water, silicone oils, diluted acids, alkalies and alcohols. Further features excellent resistance to aging by both sunlight and ozone.