Part # 90-423-1419
Your Source for Swimming Pool & Spa Parts - INYOpools.com
I know dimensions of this o-ring, but is it round or square. The old one seems to be square.
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This o-ring is round and not square. Over time the o-rings do tend to get mishappen so it is hard to compare the shape of the old to the new. If you have a Challenger pump then this is the correct replacement.
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