O ring measure
In measuring for a new Oring, do you measure from the inside, outside or middle? I'm looking at my water filter and need a new ring. The ring is about 4" but 1/8" thick. So that would be about .25 ...
Forum Discussion
Smaller may stretch, but then it might be too thin to seal properly. The O-ring should have its size listed: OD, ID, and/or thickness. IOW you might find ID and thickness, or OD and thickness.
