... rubber.1:EPDM is copolymerized by ethylene and propyleneso, so heat resistance, ageing resistance, ozone and stability are very good,2:the ... high temperature steam resistant.4:No permeability to the gas.5:Suitable temperature:-50oC~150 oC6:We have got the WRAS ... and ISO9001 Certificate.7:Size: 1.5 "- 72". Materials:Rubber Seat Material: NBR, EPDM, NR, CR, SI ...