Fermenting Ventilating Tall Bung with Burgundy Top This is our best seller and is 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. Our bungs are designed to fit snugly in your carboy or barrel, ensuring a tight seal that prevents air from entering while allowing excess carbon dioxide to escape. The tall design allows for better gas exchange and improved fermentation, resulting in a superior final product. Made from high-quality materials, our bungs are durable, easy to clean, and built to last. Whatever the size of your operation, our fermenting bungs will help you produce the best result possible. Top easily removable for cleaning - Universal Size TOP BOTTOM HEIGHT 55.5 mm 44.4 mm 38.1 mm 2 3/16" 1 3/4" 1 1/2"