1 inch union o-ring size?

pandimus

Active member
Any one happen to know what size o-ring is in a 1 inch union ball valve? I seem to have lost one for my return pump, and need to get a replacement. was hoping to do so without buying a whole new valve.
 
It will be different from one brand to another. Take you valve to a plumbing supply store. Or even the plumbing parts section of HD, Ace or Lowes and you hopefully will find a match.
 
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