Bubbler Airlock + Rubber Stopper Bungs 28/26 mm Home Brewing Free P&P UK
BUBBLER AIRLOCK +. Bored Rubber Bung with 9 mm Hole for standard airlock, bubbler, stopper High Quality Bubbler Airlock for Wine and Beer Making. It is essentially a one way valve. RUBBER STOPPER BUNG 28/26 mm.