Jandy / Compool / Pentair Pool Valve Spacer Ring

Some of the older Jandy / Compool pool valves have a little plastic spacer ring between the two rubber o-rings on the shaft. Newer ones don't have the plastic spacer, they just have two o-rings next to each other.

I owned an older valve and this plastic spacer had broken. I printed a few different sizes and this one seemed to fit ok. You could scale in the slicer if needed though.

I recommend printing in ASA or something more chemical resistant than ABS or PLA. Supposedly ASA is good for this, so I'm using that but only time will tell.