This year I'm considering doing my MLF in barrel. In the past, I've
waiting til MLF completed in glass before transferring to the barrel.
The trouble is that I'm using 15 gal barrels so I'm having difficulty
locating suitable bored silicone bungs to hold an airlock. Anyone know
of a source for these? Would a fermentation bung work ok for this?
Any opinions on the Ferm-rite bungs? As always, thanks for your help.

RD