... Model:DN80,DN100,DN125,DN150,DN175,DN200 2.Material:rubber 3.Color: White,Black Truck-mounted concrete pump ... reducer, (coupling)clamp , male and female flange ,rubber hose,sponge rubber ball,wear plate etc. Welcome to contact us ... or 4 meters,other sizes upon your request rubber piston/gasket:DN 125mm and DN 150mmrubber sponge balls:for ... sealing rings Everdigm DN150(6'') Concrete Pump rubber gasket