摘要:
A curable composition of an epichlorohydrin rubber and an acrylic rubber composed of(1) 100 parts by weight of (a) 10-97% by weight of an epichlorohydrin rubber and (b) 3-90% by weight of an epoxy-containing acrylic rubber,(2) as a crosslinking agent, about 0.1 to about 10 parts by weight of a 2,3-dimercapto-pyrazine or -quinoxaline compound having the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined in claim 1 and(3) as an acid acceptor, about 0.1 to about 50 parts by weight of a compound of a metal of Group II or IVa of the periodic table.