Rubber stopper with airlock hole

This tapered #10 rubber stopper has a central hole for fitting a brewing airlock to compatible carboys and fermenters.

• Approximate top diameter: 50mm
• Approximate bottom diameter: 41mm
• Compatible with the listed 23L and 11.5L plastic carboys and 23L PET FerMonster

Compatible airlocks

• Bubbler Airlock for a compact standard setup.
• Senior Airlock where the larger format is preferred.

Measure the vessel opening before ordering. Clean and sanitise the stopper and airlock before use, and fill the airlock as directed.