... Rubber Seal Ring 1,FDA,ROHS Certificated. 2,OEM service. 3,Ozone resistance,aging resistance,UV resistance Electric Meter Rubber Seal Ring1, Material ... resistance,Ozone resistance etc.4, Certification:ISO9001:2008,ROHS,FDA5, Packing: plastic bag&carton box or according to your requirements.6 ... samples.8, OEM or ODM is welcomed Electric Meter Rubber Seal Ring