rubber valve seat

rubber seat with resin back ring rubber valve seat Features: 1:EPDM is copolymerized by ethylene and propyleneso, so heat resistance, ageing resistance, ozone and stability are very good, 2:the product has excellent resistance to polarity solvent including Alcohols and ketone. 3:Good weather resistant, ozone resistant and high temperature steam resistant. 4:No permeability to the gas. 5:Suitable temperature:-50 150 6:Specification rangings from 2 inches to 14 inches, if exceed 14 inches, it must be aluminum back. 7:We have gotthe WRAS Certificate. 8:Valve parts. Materials: Rubber Seat Material: NBR,EPDM,NR,CR,SI,FPM,PTFE etc. Back Ring Material: Phenolic mouldingpowder, Aluminum and FRP etc. Order Notes: This is fit for reference, customer must tell names,thickness,temperature,pressure in order.So that we can give you the best advice. We have got the WRAS and ISO9001 Certificate.