North Mountain Supply 3 piece airlock, 6.5 drilled rubber stopper and 38 mm black plastic lid sets provide a simple, reliable way to manage fermentation in compatible glass jugs and jars. Sold as a pack of 4, this bundle gives you enough hardware to run multiple fermentations at once or to keep spare airlocks ready for your next batch.
Each set includes:
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One 3 piece plastic airlock
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One size 6.5 drilled rubber stopper
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One 38 mm black plastic lid
The 3 piece airlock is designed to:
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Allow CO2 produced during fermentation to escape from your vessel
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Help protect the contents from airborne contaminants and oxygen when used correctly
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Provide an easy visual cue of fermentation activity as bubbles move through the chamber
Using the system is straightforward:
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Open the vented top of the airlock.
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Fill the airlock about halfway with sanitizer or clean water as recommended.
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Insert the stem of the airlock into the hole of the 6.5 drilled rubber stopper.
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Fit the stopper securely into the neck of your compatible fermenter.
The plastic construction of the airlock makes it light, durable and easy to clean. Rinse thoroughly after use and sanitize before each new batch to keep your fermentation equipment in good condition.
The size 6.5 drilled rubber stopper is sized to fit many standard glass carboys and jugs that accept a number 6.5 bung. The drilled opening is precision cut to hold the airlock stem snugly, helping maintain a good seal while still letting gas escape through the airlock.
The 38 mm black plastic lid is included for use with compatible continuous thread tops, making these sets especially useful if you ferment in jugs or jars that take a 38 mm closure. It provides a convenient way to close vessels when an airlock is not required, such as during storage or transport of nonactive batches.
Typical uses:
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Primary or secondary fermentation of beer in compatible jugs and carboys
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Winemaking and cider fermentation
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Vegetable and pickle fermentation in suitable containers
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Kombucha and other small batch ferments where an airlock is preferred
Key features:
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Pack of 4 complete fermentation hardware sets
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Each set includes a 3 piece airlock, size 6.5 drilled rubber stopper and 38 mm black plastic lid
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3 piece airlock allows gas to escape while helping protect your ferment from outside air
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Plastic airlock is easy to clean and sanitize between batches
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Suitable for wine making, beer brewing and vegetable or pickle fermentation when paired with compatible vessels
Whether you are just starting to ferment at home or adding additional setups to expand your brewing and fermenting capacity, this 4 pack of airlocks, drilled stoppers and lids offers a practical, easy to use solution for managing multiple batches.