... . 2,OEM service. 3,Ozone resistance,aging resistance,UV resistance Viton O Ring1, Material:NBR,CR,SBR,HNBR,ACM,EPDM,IIR ... ,NR, EP,Silicone,Viton etc.2, Hardness: Between 30~90 shore A3, Property:high ... your drawings or samples.8, OEM or ODM is welcomed Viton O Ring