DC 12V Booster Water Pump Durable G1/2 Screw Miniature Circulating Submersible Pump for Fountain 1Ceramic shaft with high lubrication bearing, low noise, long life, anti seize function, can be used in diving, it can be installed underwater and is completely waterproof. 2The shaft of the water pump adopts a high performance ceramic shaft, which has high accuracy and good shock resistance. 3The water pump adopts a precise fit between the wear resistant shaft sleeve and the ceramic shaft, the noise is less than 35 decibels, and the lower power can even reach 30 decibels, almost reaching mute effect. 4The product can be applied to a variety of scenarios such as water vending machine filling pump, mobile bathing machine, machine tool equipment water circulation, rockery fish tank small fountain, etc. 5The stator and circuit board of the motor are potted with epoxy resin and completely isolated from the rotor, which solves the problem of water leakage caused by long term diving of the motor type DC water pump.