1.1 This specification covers a weather and ozone-resisting crosslinked compound for use as the outer covering or jacket on insulated wires and cables. The polymer component of this material consists substantially of ethylenepropylene copolymer (EPM) or ethylene-propylene terpolymer (EPDM).

1.2 The values stated in inch-pound units are the standard, except in cases where SI units are more appropriate. The values in parentheses are for information only.