I bought a cylinder of Bernzomatic Oxygen on the advice of my local homebrew store. They sold me an adapter kit (w/ air stone) and I got the cylinder from Lowes (tool section).

Picture of adapter

Firstly I tried attaching the adapter directly to the cylinder which caused massive leakage through the threads. Applying teflon tape (lots) helped but it was still leaking a bit. Exhausted the entire bottle for less than 5 minutes.

If anyone is using O2, how is it done?

  • 1
    Pictures would help. Are the fittings brass, plastic ? Commented Mar 17, 2015 at 13:20
  • I've used such O₂ cylinders with the commonly-available homebrew adapters in the past. There should be no leakage. Pictures and/or web links would help.
    – jsled
    Commented Mar 17, 2015 at 13:30
  • are you sure you had the regulator turned off before attaching? and it shouldnt need teflon tape, the O ring should seal it, when attached correctly. I have used similar for propane camping stoves.
    – jsolarski
    Commented Mar 17, 2015 at 14:23
  • 1
    I have to chime in, too, and say I use that exact oxygen bottle with that exact oxygenation kit, and it works fine. I was able to oxygenate at least six batches (didn't keep count) with one bottle following the instructions. Yours might be defective.
    – bughunter
    Commented Mar 17, 2015 at 14:34
  • Apparently there is something missing from the adapter. I'll be getting a replacement soon.
    – Todd
    Commented Mar 18, 2015 at 15:27

1 Answer 1


I took the attachment back to the homebrew store and they replaced it and attached trhe replacement themselves. Since then I have used the bottle for several batches. I guess it was a defective gasket.

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