Fermrite silicone bung - large size

Quantity discounts are available.

The large Ferm-Rite bung tapers from 46mm to 56mm. It is designed to fit a 50mm bung hole, the size in most American oak barrels.

The most important benefit of the FERM-RITE™ fermentation bung is peace of mind for the winemaker. FERM-RITE’s unique two-piece design allows the fermentation bung to stay in the barrel, releasing pressure when necessary. The bung is made from 100% FDA approved, food grade pure silicone rubber, a durable material resistant to sulfur dioxide.

During the vigorous fermentation stage, the bung stays firmly in place, allowing pressure to release while remaining air tight, keeping your wine safe from oxidation and fruit flies. As the wine evaporates over time, the liquid level inside the barrel drops, creating suction to draw the top piece of the FERM-RITE™; fermentation bung down. This vacuum seal eliminates the possibility of further oxidation. Winemakers no longer have to worry about watching every fermenting barrel.