Demijohn Bung - Bored w/ Hole for Airlock - Rubber

Fits a standard 5 gallon demijohn.

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

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

Being rubber, it can be reused and properly sterilised repeatedly for years and years.

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