... ,OEM service. 3,Ozone resistance,aging resistance,UV resistance Silicone Jar Seal Gasket1, Material:NBR,CR,SBR,HNBR,ACM,EPDM,IIR,NR ... , EP,Silicone, Viton etc.2, Hardness: Between 30~90 shore A3 ... your drawings or samples.8, OEM or ODM is welcomed. Silicone Jar Seal Gasket