• Oil Seal : Nitrile butyl rubber • Motor Shaft : SS – 420 • Motor Body Pipe : J4 • Motor Bush : LTB-4 / Teflon • Thrust bearing assembly : SS – 420 & Carbon • Diaphragm : High Nitrile Butyl Rubber • Motor Base : Cast Iron / SS – 304 • Housing Set : Cast Iron / SS – 304