Bev-Seal Accuflex Ultra 235, 3/16” ID, 5/16” OD, 35’, $12 shipped USPS. This is left over from my keezer project, and I would definitely use it again — no vinyl smell or taste in the beer! But full disclosure, it is pretty stiff, so if I did it again I would use push-to-connect fittings instead of struggling to push it onto barbed fittings. After the fact, I learned that a John Guest 5/16 x 5/8 BSPP connector, PI451015FS, will connect this line onto a standard beer shank, and on the other end, a John Guest 5/16 x 1/4 Female Flare Adapter, PM4508F4S, will connect it to a keg quick connect.
