... service. DN1.5"- DN72". Features:This product is EPDM rubber.1:EPDM is copolymerized by ethylene and propyleneso, so heat resistance ... WRAS and ISO9001 Certificate.7:Size: 1.5 "- 72". Materials:Rubber Seat Material: NBR, EPDM, NR, CR, SI ,FPM, PTFE etc.Order ...