... price ISO threaded rubber joints universal rubber expansion joints Threaded/Flanges rubber joints is also called expansion rubber joint ,flexible rubber joint ,ect. ... absorption in service.4.The inner seamless high-pressure rubber joint independently developed by us prevents corrosive medium from ... NBR,NB,SBR,EPDM etcStandards: BSPT,BSP,NPT,DIN,threads union.DIN2576,BS4504,JIS 5K,10K,ANSI B16.5 etc ...