Airlock Homebrew Bubbler and Gromit

Keep your fermentation safe, clean, and contamination-free with this classic bubbler-style airlock, designed for wine, beer, cider, and mead brewing. Simple, reliable, and easy to use—an essential tool for every homebrewer.

Fitted to a fermenter lid or demijohn using a bung (sold separately), this bubbler airlock holds a small amount of water in its U-shaped chamber. As fermentation builds CO₂ pressure, the gas escapes through the airlock while preventing oxygen from entering the vessel.

This one-way system protects your brew against:

• Oxidation
• Airborne bacteria
• Fruit flies and insects
• Dust and debris

Features:

• Includes a protective plastic cap to block dust and insects
• Clear plastic body for easy monitoring
• Prevents oxidation during long fermentations
• Fits all standard bungs and fermenter lids with an airlock hole
• Reusable and easy to clean

Brewing Tip:

Do not overfill the airlock—too much water can be sucked back into your fermenter during temperature changes or pressure drops. A small amount is enough to create a safe barrier.

Perfect For

• Winemaking
• Beer brewing
• Cider and mead fermentations
• Kombucha and experimental ferments

Made in China