Breathable Silicone Bung

If you are going to be fermenting anything in your oak barrels you will need to allow CO2 gasses to escape.  This silicone stopper is designed to be both breathable and serve as an airlock. Its innovative design enables the release of CO2 pressure, while effectively preventing the entry of airborne contaminants and oxygen.  For secondary fermentation use only, as primary fermentation will be too active.

**This is only to be used with tri clamp barrels as this won't fit the V1 barrels with a wooden bung.**