... . 2,OEM service 3,Ozone resistance,aging resistance,weather resistance Silicone Rubber Seals Gasket&Ring1, Material:NBR,CR,SBR,HNBR,ACM,EPDM ... :Between 30~90 shore A3, Property:high/low temperature resistance, oil and fuel resistance, water resistance,weathering resistance, Ozone resistance etc ... your drawings or samples.8, OEM or ODM is welcomed Silicone Rubber Seals Gasket&Ring