This is a drilled tapered rubber bung for a better seal and holds the airlock securely in place. A curved lip stops the bung from accidentally falling into the carboy.
- Drilled Rubber Stopper #6.5
- Works with 1 Gallon Glass Jug
- Drilled to accept airlock or tubing
- Drilled Rubber Stopper #6.5
- Works with 1 Gallon Glass Jug
- Drilled to accept airlock or tubing