A centrifugal pump includes a housing having a housing cavity, an inlet, and
an
outlet. A pump shaft is located within the housing cavity. A radial bearing coaxially
surrounds the pump shaft. The shaft and the radial bearing are rotatable with respect
to one another. An impeller is positioned to receive a fluid from the inlet and
to exhaust the fluid to the outlet. The impeller has a first magnet assembly. A
rotor has a second magnet assembly spaced apart from the first magnet assembly.
A primary container is interposed between the impeller and the rotor. The primary
container is arranged to contain a pumped fluid. A drive shaft is associated with
the rotor for rotating the rotor. A secondary container contains the pumped fluid
if the primary container leaks. The secondary container supports a generally dry-running
seal (e.g., non-lubricated seal) associated with the drive shaft. The seal is disposed
axially from the primary container and has a stationary portion and a rotating portion.