Originally Posted by jgaepi
I see these recommended but not easy to find. For a 1/2 inch silicone tube over one of bargainfittings.com 5/8 barb, which size oetiker clamp do I need? And any recommended online sources?
IIRC, I think Keg Connection carries them. I haven't used them on silicone tubing, but I have used them on some gas and beer lines. I found some at Lowe's for PEX tubing which were not the size I needed, so I bought some that were a little too large, then wrapped the tubing (vinyl) with several layers of heavy duty teflon tape. Then used some big pinchers instead of the expensive tool for the O-clamps. Works great. Lowe's only had 3 different sizes and the size listed on the bags is misleading because it corresponds to PEX tubing sizes, not actual tubing OD.
EDIT: I just checked my parts bin and the only sizes of O-clamps that Lowe's had are 3/8, 1/2, and 3/4. The 1/2 is too small and the 3/4 is going to be quite a bit too large. The ID of the 3/4 clamp is over 7/8 inch and the clamp is labeled 23.3 which I believe is the ID in mm, unclamped.