• Purpose: Lets CO₂ escape during fermentation without letting bacteria sneak in.
  • Type:
    • 3-piece airlock (easy to clean, beginner-friendly).
    • S-shaped airlock (less cleaning, slightly slower gas release).
  • Experience Level: Beginner. Just fill with sanitized water and let it burble.
  • Pro Tip: The sound of your first airlock bubbling is the happiest gurgle you’ll ever hear.

Product Highlights

AirLock 3‑Piece Fermentation Airlock – A straightforward, highly-rated 3-piece airlock, easy to clean and reliable for everyday brews.

Three‑Piece Airlock (Northern Brewer) – A solid, trusted option from a respected homebrew supplier—classic functionality you can count on.

3‑Piece Airlock for Brewing & Distilling – Perfect for both beer and spirits, this airlock disassembles easily after blow-off for thorough cleaning.

Air Lock ‑ 3 Piece (Shatter‑Resistant) – Made from flexible polypropylene—great for clubs, beginners, or households needing extra durability.

3 Piece Plastic Airlock for Mason Jars – Slim and compact, this airlock is ideal for those fermenting small batches in mason jars.

Silicone Fermentation Airlock for Mason Jars – A one-way silicone valve that fits wide-mouth mason jars—no water to fill, just pop it on and go.

Silicone Fermentation Airlock for Mason Jars (Alt Seller) – Similar to the above, this alternative seller provides another easy, low-mess option.

Rubber Stopper #5.5 Drilled Fermenter Bung – A drilled rubber bung sized to fit an airlock—essential for good sealing, especially in smaller batches or jar setups.

Twin Bubble Airlock & Bung Pack – Comes bundled with a twin bubble airlock plus the matching bung—handy starter pack combo.

Leak‑Proof Mason Jar Lid (not an airlock, but handy) – Not exactly an airlock—but incredibly useful for mason-jar fermentations where a spill-free lid makes a big difference.

Tips for Choosing and Using

Choosing the right airlock and bung setup depends on your brewing vessel and level of interaction:

3-Piece Airlock – Best if you want something easy to clean, tamper with, and observe fermentation through. Great for beginners. 

Bubbler (S-Style) – Less parts to lose and doesn’t dry out as fast—ideal for longer fermentations, like wine or mead. More challenging to clean. 

Silicone Valve (Mason Jar) – Drops in place, requires no fill water, and is perfect for small batches and low-mess setups.

Rubber Stopper Sizing – Make sure the stopper matches your fermenter neck tightly to prevent leaks or contaminant entry.

Best Practice – Always fill airlocks with clean water or sanitizer solution, mount securely, and monitor level to prevent backflow—especially essential in temperature-changing environments.