Just bought a bunch of O rings for the fitting on the end of the double hose. Minimum order was eighty-six. Needless to say, I have a few extra. Send me a PM if you want a few. No charge.
Cost, if I recall, was $0.12 each . Not sure of postage but the bill was less than $20.00. A lot better than the $5.00 price tag on eBay. Have not tried them yet but they look good. Someone published a chart in this forum with the part number and the size. I found the exact size on the O-Ring Store site. This particular size is
7/32 x 13/32 x 3/32.
The cost is $2.22 + shipping for 100 of them, I include 2 new ones, and at times more, free with every repair tool purchased, usually I buy them 1000 at a time…