HVA-2 is a kind of multifunctional rubber vulcanizing agent,it is used as vulcanizing agent & cocuring agent ... as cocuring agent in neoprene rubber, chlorosulfonated polyethylene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, isoprene rubber, butyl rubber, bromobutyl rubber, acrylic rubber, silicon rubber and other rubbers, PDM ...