They also fit standard bored cork and rubber bungs. They just sit lightly on top to keep flies and dust out of the airlocks.
10 x Fermentation Bubbler Airlocks & Bored Rubber Bungs Corks Demijohn Wine Beer
6 x Fermentation Bubbler Airlocks & Rubber Bungs Corks Demijohn Wine Beer Cider
3 x Fermentation Bubbler Airlocks & Bored Cork Bungs - Demijohn Wine Beer
6 x Fermentation Bubbler Airlocks & Bored Cork Bungs Demijohn Wine Beer Cider
Almost Off Grid 10 x Bubbler Airlocks and 10 x Bored Rubber Bungs for Glass Demijohns, Homebrewing, Winemaking, Mead, Beer & Cider Making, Fermenting
Airlock & Rubber Bung x 2 - Fermentation Bubbler Combo for Demijohn Fermenter
