Gray Epichlorihydrin Rubber

Gray Epichlorohydrin Rubber (ECH / ECO) retains all of the properties of the standard black epichlorohydrin rubber (ECH / ECO), with the exception of its distinguishable light gray color. It’s a cost-effective polymer that bridges the gap between nitrile and considerably more expensive polymers.

Gray epichlorohydrin rubber (ECH / ECO) provides superior strength against tears and resistance. Among its many beneficial properties include good resistance to bio-fuel and abrasion.

Gray Epichlorohydrin rubber (ECH / ECO) has low gas permeability and better low temperature flexibility than Nitrile (NBR). It exhibits excellent resistance to acids, alkalis and ozone exposure. Typical working temperatures range from -35°C to +125°C.

Gray Epichlorohydrin Rubber

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Description Durometer Tensile (Min PSI) Elongation (%) Temperature Range (F) Specification Conforms to ASTM D20000 Spec Sheet Quote





-40° to 240°

5CH712A25B14C12EO36F17G21Z1Z2, Z1= 70 duro Z2 = Gray

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Gray epichlorohydrin rubber offers excellent high and low temperature performance, making it the polymer of choice in severe applications like arctic refueling hose tubes and other sealing conditions requiring low temperature flexibility. Gray epichlorohydrin rubber is a good alternative butyl rubber when gas permeability and oil resistance properties are desired.

Gray epichlorohydrin rubber has limited uses as a sealing material due to poor compression set limits and should not be used with certain metals, as it may have a corrosive effect. As with all BRP products, our gray epichlorohydrin rubber (ECH / ECO) products are all American-made in our Lima, Ohio facility.

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