Hi Everyone,
I know this is a shot in the dark. But it never hurts to ask.
I am looking for this spring.
ID .262"
OD .294"
Thickness .017"
Width .127"
The ID is the important dimension. I need something very close to that ID.
By any chance: Does anyone know where I might find one? Grainger isn't showing anything even slightly similar. Does anyone know what it is actually called?
Hi Everyone,
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Those are used on all sorts of push-on control knobs, including many transformer knobs.
In truth, the ID isn't super critical as a rule, if it were slightly less, it would expand as they're made of spring steel.
http://www.lectra-fasteners.com/
Just start taking knobs off everything you own and see if you already have it. 
I believe that is a compression ring, PW part 22-93 or 1011-100 is what you are seeking.
Thank you Guys! I will look into it in awhile.
John,
Thank you! Lectra Fasteners has the exact ring I need. I called them today and the gentleman was very generous. He said their minimum quantity is 1,000; but, he is sending me a few "samples" for free.
Thank you again for the lead! I had done my research but kept coming up with nothing.
Sincerely,
Rick
Great, glad it worked out. Most of those places are pretty liberal with samples, they figure you might be a future customer contact. 
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