Carboy Cap on a Better Bottle?

[Cpt_Kirks]

Will one of these carboy caps fit a Better Bottle?

I am working on a CO2 forced kegging system.

 

[DrawTap88]

They will fit...but it is a loose fit.

 

[Decypher]

They seem to work pretty well for me. Make sure you get the cap that is made for a 5 gallon carboy, not a 6.5 gallon carboy. The cap for the 6.5 gallon carboy is actually a little smaller, ironic.