Epichlorohydrin - Epichlorohydrin Rubber

Typical Trade Names:

• Herclor - Hercules Inc.
• Hydrin - B.F. Goodrich Co.

Epichlorohydrin is a recent addition to the oil resistant polymer class. Compounds of this type are aliphatic polyethers with chlorofunctional side chains. Two basic classes, homopolymers (CO) and copolymers (ECO) are available. Both have excellent resistance to hydrocarbon oils, fuels, and ozone. High temperature resistance is good, but compression set at 300 degrees F is only fair. This property, plus the corrosive nature of epichlorohydrin, are limiting factors in some applications.

Copolymers give very good low temperature properties, providing a temperature range of -65 degrees F to +275 degrees F (-54 degrees C to +135 degrees C) where corrosion in not likely to be encountered and where compression set is not a problem. The homopolymers are useful thru a temperature range of approximately -40 degrees F to +275 degrees F (-40 degrees C to +135 degrees C) under the same conditions.