Silicone Bung (Breathable) - Large Barrel
FE483
Fits most oak barrels and the hole in most variable volume fermenters. A breathabe Silicone stopper that acts as both a stopper and an airlock. Unique design allows CO2 pressure to escape but keeps Oxygen and airborne contamination out.
Top measures 2 1/2" and the bottom is 1 7/8".
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