Demijohn Bung - Bored w/ Hole for Airlock - Cork

Fits a standard 5 gallon demijohn.

Stick it in the top of your demijohn along with your airlock and protect against infection or oxidation of your brew.

Also fits many fermentors as it's a widely used standard size.

Be aware that you can't effectively sterilise cork, really, so it is advised to replace your cork bungs on a very regular basis.

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