Product review (3 stars): It works, but doesn't last
Worked out great and was not that hard to change out.  Old ring had tears in it causing the machine to leak.  Hardest part was getting spring that holds the ring back on.  Just took a little time of playing with it.  A lot better than paying a couple of hundred dollars to a repairman.

Update: just shy of 2 yrs this new seal has a tear in it. Seems the rubber is thinner then the original seal.