... coated ductile iron, 304S. S, 316S. Body: Cast iron, carbon steel, 304S. S, 316S. S and aluminum bronze3)Materials:Working Pressure ... food grade EPDM, NBR, abrasive c)Shaft: 416S. Sand316S. S, 17-4pHS, aluminum bronze and monel.resistant NBR, Viton, high temperature ... , food grade EPDM, NBR, abrasive Shaft: 416S. Sand316S. S, 17-4pHS, aluminum bronze and monel.resistant NBR, Viton, high temperature ...