#7 Hollow Rubber Tapered Bung – Fits 3, 5 & 6 Gallon Glass Carboys

For more sizes and styles, see our complete collection of bungs.

The #7 Hollow Rubber Carboy Bung is designed to provide a secure, airtight seal for your fermentation vessels. Its hollow construction allows for slight compression, helping create a tighter fit while making insertion and removal easier.

This bung fits standard 3, 5, and 6 gallon glass carboys, making it a versatile choice for winemaking, brewing, and cider production.

Standard glass carboys from 3 to 6 gallons typically use a #7 bung, helping ensure a snug and reliable fit.

Choose the option that fits your setup:

• Drilled (with hole): Designed for use with an airlock during active fermentation
• Solid (without hole): Ideal for sealing your vessel during storage or aging

Key Features:

• Hollow design for better compression and fit
• Fits standard 3, 5, and 6 gallon glass carboys
• Available in drilled and solid options
• Provides a tight, leak-resistant seal
• Reusable and easy to clean
• Drilled version fits standard airlocks

Note: Fit may vary slightly depending on the manufacturer of your container.