Rubber Silicone Cap 1,FDA,ROHS Certificated. 2,OEM service 3,Ozone resistance,aging resistance,UV resistance Rubber Silicone Cap1, Material:NBR,CR, SBR ... ,EPDM, HNBR,IIR,NR, EP,Silicone,Viton etc.2, Hardness:Between 30~90 shore A3, Property: ... drawings or samples.8, OEM or ODM is welcomed. Rubber Silicone Cap