Dometic's PMA1000 17GPM 230V (AC-5C-MD) Air-Cooled marine centrifugal seawater pump is an excellent choice for providing seawater circulation for Dometic conditioning systems. The proven magnetic drive eliminates the troublesome mechanical shaft seal. There is no seal wear, power-robbing friction, or leakage through the seal. The impeller and drive magnets are strong, permanent ceramic types which prevent slippage. This ensures that full motor power is converted into pumping power.