1.Rubber O-ring:NBR CR SBR EPDM CR FKM etc 2.color :any is ok 3.Certificate:ISO 9001 4.OEM is ok 1.supply standard and non-standard o-ring 2.all colors and materials are available 3.high quality 4.best price and serviceProduct InformationNameRubber seal,Rubber O-Ring ,oil seal, Rubber GasketMaterialEPDM,NBR,SBR,CR,NR,SIL,VT,HNBR,PU,FSIL.etcPerformance1.Good sealing and damping2.Water resistance3. ...