... ,OEM service. 3,Ozone resistance,aging resistance,UV resistance Electric Meter Rubber Seal Ring1, Material:NBR,CR,HNBR,ACM,SBR,EPDM ... ,NR,EP,Silicone, Viton etc.2, Hardness:Between 30~90 shore A3, Property:high/low temperature resistance,oil and fuel resistance ... drawings or samples.8, OEM or ODM is welcomed Electric Meter Rubber Seal Ring