Rubber Stopper - Drilled Carboy Bung for Fermonster (#10)

Fits the Fermonster Carboys and Better Bottle Carboys.

Rubber stoppers provide an air-tight seal to carboys, necessary for proper fermentation. BPA free and made out of Food Grade materials.

Maximum Temperature: 70°C (158°F).

Top Diameter: 1 31/32"

Bottom Diameter: 1 5/8"

Drilled for airlock.