... steel,aluminium alloy platingSeat Material:natural rubber,butyronitrile tubber,neoprene and ethylene-propylene rubber,hypalon,silicone rubber, fluororubber,ptfeSurface Treatment:epoxy resinDrive Way ... , stainless steel,aluminium alloy materials,aluminium bronze. Seat selects different rubber material with chemical and physical properties, high-performance , ptfe ,etc. Accordingly ...