No. 6.5 Drilled Stopper/Bung

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For use with Big Mouth Bubblers or 6 US gallon (22.7 litre) glass carboys. Drilled to accommodate an airlock.

This drilled gum rubber stopper will hold your airlock and create a firm seal on your Big Mouth Bubbler fermenter or 6 US Gallon (22.7L) glass carboy.


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Reasonably priced Bund
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This bung was recommended for the Big Mouth Bubbler. It fits but a slightly bigger bung might be a better fit.
Bunged up
Review by
This hung has a hole in it. You’ll need that.
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