... NR, EPDM, metal, etc3.Different sizes are availableCountry of Origin China(zhejiang) Advantage 1.Ozone and chemical resistance2.High ... anti-radiation, good flexibility, good elasticity5.Excellent resistance of acids, aliphatic hydrocarbons, aromatic hydrocarbons and animal and vegetable ... with many different sizes of rubber parts, according to your drawing or samples.Certificate ISO/TS 16949:2002 ...