... 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 ... an ideal solution for sealing application where there are high temperatures and corrosive liquids or gases involved.4) ...