Fermenting Ventilating Tall Bung with Burgundy Top.  Widely used by vintners and craft brewers with barrel aging programs.

Made from food grade silicone, these bungs hold securely in place no matter the temperature of storage and can easily be sanitized for sequential uses.

Top easily removable for cleaning

A breathable 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. Sometimes called a breather, vent bung or ventilating bung.