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TR2/3/3A A-type overdrive drain plug oring

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carpecursusII

Jedi Trainee
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Some time ago someone here posted the o-ring specs to replace the fiber washer on the drain plug with a rubber oring. Can anyone remember what it was??
 
I just did trial and error with o-ring's from Ace, sorry I don't have sizes but ended up with one that had the same inside diameter as the throat of the the brass plug. It was equal in thickness to the new fiber washer which I also included. That plus careful application of teflon tape to the threads and it's dry. The other choice in that size was thicker, about an eighth inch and it leaked.
 
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