EPDM (Ethylene Propylene)
Selection Guide
EP elastomers, O-rings, gaskets, & custom molded parts contain copolymers of ethylene and propylene with some added substances in certain compounds. EPDM materials, O-rings, gaskets, & custom molded parts can operate over a wide temperature range, and are compatible with glycol fluids that cause problems for most typical elastomeric seals. However, ethylene-propylene O-rings, gaskets, & custom molded parts swell easily when exposed to hydrocarbons such as mineral oil and grease. Due to its compatibility with glycol fluids, EP O-rings, gaskets, & custom molded parts are used in the automotive, aerospace, and other industries where hydraulic fluids and braking fluids are common.
Common names include: EPDM (Ethylene-propylene diene monomer), EP Trade Names: Nordel®, Epcar®, Epsyn®, Vistalon®, Royalene®, Vistalon®
Features of EPDM
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EPDM O-rings, gaskets, & custom molded parts have excellent resistance to alcohols, glycol, engine coolant, braking fluids and hydraulic fluids such as Skydrol
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EPDM O-rings, gaskets, & custom molded parts have good resistance to heat and compression
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EPDM O-rings, gaskets, & custom molded parts have good resistance to steam and hot water
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EPDM O-rings, gaskets, & custom molded parts have good resistance to ketones, alkalis, polar solvents
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EPDM O-rings, gaskets, & custom molded parts have good resistance to ozone, sunlight, and aging
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EPDM O-rings, gaskets, & custom molded parts are available in multiple compounds to meet performance and cost requirements
Limitations of EPDM
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EPDM O-rings, gaskets, & custom molded parts have poor performance when in contact with oils, gasoline, kerosene, aromatic and aliphatic hydrocarbon, halogenated solvents, concentrated acids, non-polar solvents, petroleum oils and aromatic fuels.
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EPDM O-rings, gaskets, & custom molded parts have a Service Temperature Range of (varies with application): -65°F to 302°F (-54°C to 150°C)
Please consult a TKF Tech Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.
TKF Tech is a proud partner of Canyon Components, LLC and can provide Canyon Components materials, O-rings, and custom parts. Click here to see what Canyon has to offer.