1.Model:DN80,DN100,DN125,DN150,DN175,DN200 2.Material:rubber 3.Color: White,Black Truck- ... request5.sponge cleaning ball Material:natural rubber Size:DN100,DN125,DN150,according to your request6.rubber items( adopt natural rubber) rubber ... ,PM,SANY,Zoomlion,etc. Pictures concrete pump sealing rings Everdigm DN150(6'') Concrete Pump rubber gasket