WARNING: use only with non-flammable liquids compatible with pump component materials and in non-flammable/non-explosive atmospheres. Commercial pumps feature higher performance and a longer length cord. Upper and lower ball bearings for smooth, trouble-free operation. Dayton pumps are constructed of heavy-duty cast iron with stainless steel corrosion-resistant motor shaft and hardware, oil-cooled and lubricated continuous duty motor, and silicon carbide mechanical seals.