rubber seal ring 1.Material:HNBR 2.High/Low temperature resistance,Oil resistance, ... 3/8 5/8 3/4 5/16 rubber seal ring 1)We have kinds of material : NBR,HNBR,EPDM,SILICONE ... ,VITON,NR,FLS,FFPM,PU,PTFE etc.2) High temperature and acid-alkali resistance, anti-aging ... cartonSample lead time7 daysCarton Size47*38*34cmOEM/ODMwelcome rubber seal ring