|Bubbler Airlock with 1gall Rubber Bung
The Bubbler Airlock with 1gall Rubber Bung protects your ferment in the demi-john by allowing the escape of gas pressure, whilst admitting no air. The rubber bung will seal tight to prevent any leakages. The airlock helps to show when the fermentation is complete. Made in clear plastic so that you can check the water level.