... Steel (SS304, SS316, SS301, 316L), Cast Iron 4). Seal: Rubber, PTFE, Stainless steel, Hard Alloy 5). Working temperature: Rubber <100'C ... , Hard-seal< 425'C 6). Suitable Media ... cover Gate Stem Seal surfacestainless steel,carbon steel,cast iron stainless steel stainless steel Rubber,TPFE,stainless steel,hard alloy ( function(){ ...