This rubber impeller sea water pump are made from a special flexible rubber impeller, brass pump body, copper water pipes. Cavity rustproof new and unique working principle, with performance of strong water-absorbent, large displacement, high lift. Compact body, small size. The pump is only 5 kilograms, is only a quarter of the weight of centrifugal seawater pump. It can be easily installed to achieve an integrated diesel engine accessories.