Cornell’s popular self-priming series has the best efficiencies of any self-primers on the market. Designed with Cornell’s patented Cycloseal® sealing system to keep the seal area clear of debris, and ruggedly constructed for years of dependable operation with minimal maintenance. The higher efficiency and lower maintenance requirements of Cornell’s self-priming pumps can translate into thousands of dollars saved in fuel costs, labor, and repairs over the life of the pump.