Water is wet..it really does not matter what type of pump under what name you place it,water does not lube or oil an electrical motor.Its a ridiculous idea.Water is a corrosive and an electrical conducting element,lubing,I dont think so.A wet water pump is ?...Water is wet.All water pumps are sealed motors. Open up a sealed motor and look.You will find water in water out and an engineered or cast opening in the middle and a disc with slots and fins near the bolt head which will be in the centre of the plastic disc.There will be a small pin hole in that nut head.Thats the air bleed hole not really important. The disc spins and forces water forward.Google it...