• Perfect Fit: Fits 3, 5, 6, or 6.5 - gallon glass carboys and 500ml flasks!
• Excellent Seal: The highly pliable silicone creates a tight, reliable seal.
• Easy Maintenance: A breeze to clean and sanitize!
Looking for a great - value carboy stopper? The FE478 is your top pick. But don't miss our premium silicone carboy hood FE496. It can work as a solid or breathable bung (depending on the plug setting), giving you two bungs in one!

This solid silicone carboy bung is great for homebrewers and winemakers. You can use it when fermenting your favorite beer or wine in 3, 5, 6, or 6.5 - gallon glass carboys or 500ml flasks. The top of the bung measures 1 1/2 inches wide and the bottom is 1 1/8 inches wide. It's easy to handle and maintain, making it a must - have for anyone into DIY brewing.