rubber seal ring 1.Material:HNBR 2.High/Low temperature resistance,Oil ... /2 3/8 5/8 3/4 5/16 rubber seal ring 1)We have kinds of material : NBR,HNBR,EPDM ... products like O rings, rubber seals, rubber band, oil seal,water seal and rubber gaskets ect.Item nameO RINGSizeCustomized/standard and nonstandardBrand ... and cartonSample lead time7 daysCarton Size47*38*34cmOEM/ODMwelcome rubber seal ring