Ycould take it apart and see if it looks like the seal can be r&r'd. I
doubt it's really "volvo", probably someone else. Might be a piece of
something caught in the seal as well. If you just replaced the impeller
didn't you notice if the seal could be removed??? Also check the play in
the shaft as if that is sloppy that could be why it is leaking.
Overtightening the belt that drives these is hard on them.

OK I took it apart and it looks just like a regular shaft seal. Made
of rubber. Looks like you just pry it out and press the new one in.
If I pour water in the housing the shaft seal drips every 15 seconds
even with no pressure on it. This really burns me up. Almost $300
for a little seal. Called the dealer and the seal is not available
separately. Any way to tell who made the pump if not Volvo? The
shaft turns nice and tight with no slop. And of course on the kitchen
counter, there is no belt tension.

Thanks,

Jim