Complete rebuild Seal kit for Everbilt Convertible Jet Pump model DP550C Includes: 2 mechanical seals, O-ring, impeller, stainless steel nut and flat key Is there a leak between the motor and motor housing? Is the pump system losing pressure ? Now is the time to update the OEM seal kit. We recommend replacing the O-ring, impeller, nut and flat key, every two years. This complete rebuild seal kit comes with everything you need for the Everbilt Convertible Jet Pump, Model DP550C.