Material:EPDM,NBR,SBR,NR,VITON,etc Environmental friendly ,can meet ASTM ROHS ... used in medicine, electronics , chemicals , antistatic , flame retardant , food and other industries .1.Durometer: 30-90 shore A2.Performance: Good ... resistance,Good flexibility,Good aging resistance,ozone resistance and chemical resistance.,Strong and durable: benificial to be installation Function Waterproof, Seal, ...