Bung
It has a tapered shape to fit various-sized openings and provides a secure, watertight seal. They are commonly used as a stopper for plastic or glass carboys. They will fit in your carboy. In order to seal your brew, you must put an airlock in the bung hole.
40mm bottom diameter
49.5mm top diameter
40.5mm length
2 reviews for Bung – 1 Hole – 40bd x 49.5td x 40.5l