Carboy Rubber Stopper
Seal your fermenter with confidence using the #6.5 Carboy Rubber Stopper, designed to create a tight, airtight seal during active fermentation. This durable stopper securely holds an airlock or blow-off tube in place, helping maintain proper pressure release while protecting your beer, wine, cider, or mead from oxygen and contamination.
This rubber stopper is intended for homebrewers and winemakers using one-gallon glass carboys or The Catalyst Fermentation System lid. A reliable seal is essential for stable fermentation, clean flavor development, and consistent results across a wide range of fermentation styles.
The stopper features a standard #6.5 size with a 3/8-inch pre-drilled hole, making it compatible with most standard airlocks and fermentation tubing. It is constructed from durable, flexible rubber that forms a snug fit while remaining easy to install and remove. The design allows repeated use without losing shape or sealing performance.
For best results, ensure the stopper and fermenter opening are clean and dry before installation. Insert the stopper firmly and attach an airlock or blow-off tube as needed to allow proper gas release during fermentation.
Widely used as a standard replacement in Craft a Brew beer, wine, cider, and mead kits, the #6.5 Carboy Rubber Stopper provides a dependable, equipment-compatible solution for maintaining airtight fermentation conditions.
Description
Seal your fermenter with confidence using the #6.5 Carboy Rubber Stopper, designed to create a tight, airtight seal during active fermentation. This durable stopper securely holds an airlock or blow-off tube in place, helping maintain proper pressure release while protecting your beer, wine, cider, or mead from oxygen and contamination.
This rubber stopper is intended for homebrewers and winemakers using one-gallon glass carboys or The Catalyst Fermentation System lid. A reliable seal is essential for stable fermentation, clean flavor development, and consistent results across a wide range of fermentation styles.
The stopper features a standard #6.5 size with a 3/8-inch pre-drilled hole, making it compatible with most standard airlocks and fermentation tubing. It is constructed from durable, flexible rubber that forms a snug fit while remaining easy to install and remove. The design allows repeated use without losing shape or sealing performance.
For best results, ensure the stopper and fermenter opening are clean and dry before installation. Insert the stopper firmly and attach an airlock or blow-off tube as needed to allow proper gas release during fermentation.
Widely used as a standard replacement in Craft a Brew beer, wine, cider, and mead kits, the #6.5 Carboy Rubber Stopper provides a dependable, equipment-compatible solution for maintaining airtight fermentation conditions.
