... on.Material of Rubber Dam The rubber dam tube is made of strength canvas and rubber layer which ensure tightness of the rubber layers. The ... material of cast steel, galvanized, anticorrosive processing. The pad 5.5 mm stainless steel (304#) suppress model BoltM20×500The ... valve, ring flange, cut-off valve, electric intake butterfly valve, electric outtake butterfly valve, wire 10 meters, desiccant ...