Chickenwing
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If anyone is looking for the stock expansion valve o-rings which are NLA, for the outside sealing ring use a 1-1/2”id x 1-11/16”od x 3/32”cs also known as AS568-128 HNBR. The inside ring is 1-1/2”id x 1-5/8”od x 1/16”cs also known as AS568-029 HNBR. I purchased mine at www.Theoringstore.com . It took a few tries. Hope this helps somebody.
