Colorful food grade adjustable rubber stopper 1.Rubber Stopper Set 2.Easy for use and varid 3.Good quality 4.OEM Colorful food grade adjustable rubber stopper Feature: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, no poison and no smell3)It's an ideal solution for sealing application where there are ...