... 1,FDA,ROHS Certificated. 2,OEM service 3,Ozone resistance,aging resistance,UV resistance. Silicone Rubber Cover1, Material:NBR,CR,SBR,EPDM ... ,IIR,HNBR,ACM,NR,EP,Silicone,Viton etc.2, Hardness:Between 30~85 ... drawings or samples.8, OEM or ODM is welcomed. Silicone Rubber Cover