The Bung fits Standard Glass Demijohns. Bung Size.
eBay
The Bung fits Standard Glass Demijohns. Bung Size.
eBay
High Quality Bubbler Airlock for Wine and Beer Making.
eBay
BUBBLER AIRLOCK +. Bored Rubber Bung with 9 mm Hole for standard airlock, bubbler, stopper High Quality Bubbler Airlock for Wine and Beer Making. It is essentially a one way valve. RUBBER STOPPER BUNG.
eBay
Simply half fill with water and fit to the top of your demijohns and they will allow the CO2 to escape but won't allow any nasties to get to your wine.
eBay
High Quality Bubbler Airlock for Wine and Beer Making. It is essentially a one way valve.
eBay
Just half fill with water and you're good to go. Bung Size.
eBay
They also fit standard bored cork and rubber bungs. They just sit lightly on top to keep flies and dust out of the airlocks.
eBay