High Temperature Rubber O Ring 1,FDA,ROHS certificated. 2,OEM service. 3,Ozone resistance,aging resistance,UV resistance. High Temperature Rubber O Ring1, ... Material:NBR,CR,SBR,EPDM,IIR,HNBR,ACM,NR,EP,Silicone,Viton etc.2, ... Hardness:Between 30~90 shore A3, Property: high/low temperature resistance,oil ...