... ,DN200 2.Material:rubber 3.Color: White,Black Truck-mounted concrete pump partsWe are a manufacturer specialized in several kinds of ... the brief introduction of our products: we produce and supply concrete pump parts(fitting to Schwing and PM , Sany, Zoomlion,CIFA ... cutting ring Fitting to schwing,PM,SANY,Zoomlion,etc. Pictures concrete pump sealing rings XCMG DN150(6'') Concrete Pump rubber gasket