Pump Leaking between case and Motor mount

I would suggest turning off the pump ;)

Hard to tell anything from that picture.

I think you need to start pulling it apart and find where the leak is coming from. That seems too extreme to be a shaft seal unless it broke.

Hopefully, the pump has not cracked.
 
Looks like you blew out the O-ring sealing the front and rear shells of the pump housing. Most likely due to the stripped screw. If its a machine screw you might be out of luck. If its a coarse threaded screw you may, and I stress may, get lucky with a slightly larger diameter screw.
 
You might be able to have a thread insert installed. I'm not sure if that is doable, but it's worth a try. And since your pump housing is a gonner anyway, you could experiment. Larger hole, new threads if there is room.

It's looking grim.
 
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.