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
Airlock & Rubber Bung x 2 - Fermentation Bubbler Combo for Demijohn Fermenter
Fermentation Bubbler Airlocks and Bored Cork Bungs x 2 Demijohn Wine Beer
Airlock & Rubber Bung - Fermentation Bubbler Combo for Demijohn Fermenter
