The rugged Hypro 5330C-HX Piston Pump (Hollow Shaft) is made of cast iron materials and is great for use in various industries including agriculture and various commercial applications, as well as for hydrostatic testing. It is suitable for handling water as well as non-abrasive and general use chemicals. The valve and ball bearings are made of stainless steel, and the Buna-N cups are made of leather.