Johnson F7B-3000 extra heavy duty flexible impeller bare shaft pump 1 inch BSP(F) portsJohnson F7B 3000 extra heavy duty flexible impeller bare shaft pump 1 inch BSP(F) ports Body: Bronze Impeller: F5B F8B: neoprene EPDM or nitrile Shaft: Stainless steel The shaft is mounted with permanently lubricated double ball bearings Seal: Mechanical Cam: Full or reduced Whenever you need greater strength or service from a pump, use the Johnson Pump extra heavy duty flexible impeller pump with separate bearing housing and mechanical seal for less