When I resurfaced my inground spa last year, I removed the 10 spa jets (model # 210-6090 3-3/8" size). These units have black o rings in the back of the jet that I want to replace. Can anyone advise where to find these o rings? To replace jets, cost around $30 each. I feel o rings are worn (14 yrs old) and should be much cheaper. My guess is the o rings help separate the air and water. Air flow seems to be less than b 4 I did the resurface work.
With no replies, I wanted to follow-up to see if you made any progress on those O-rings. I agree that would seem to make sense. If you haven't found a source yet, let us know. We can put the word out to some specialists who may know.