1.ISO9001:2008;ISO14001:2004 2.Material:EPDM,NBR,SILICONE,CR,NR 3.Used in:automobile,industrial product etc 4. ... SGS ROHS 5 NameRubber ProductMaterialNBR,NR,EPDM,SILICONE,FKM,CR,BR,SBR,HNBRCertificationISO 9001:2008 ISO 14001:2004Passd ... your Requirement2.Designs and Specification are Accepted Rubber Rings of Ink-Box product