Bored Cork Bung (Fits 5L Glass Demijohn & 25L Wide Neck Fermenter)
Demijohn Cork Bung
This is the standard size cork, tapering from about 30mm down to 27mm.
This bored cork bung fits both our traditional glass 5l demijohns and 25-litre wide neck fermenters.
These are made of composite cork, nothing really compares to the naturality of cork.