#13 Silicone Tank & Keg Bung | Oversized Ventilating Stopper for Large Blue Tanks & Fermentation Kegs | Food-Grade White Silicone Ventilator Bung

#13 Silicone Tank & Keg Bung | Oversized Ventilating Stopper for Large Blue Tanks & Fermentation Kegs | Food-Grade White Silicone Ventilator Bung#13 Silicone Bung Stopper for some Large Blue Tanks and Kegs Secure your largest batches with the #13 Ventilating Silicone Bung. Engineered for the oversized openings found on large blue plastic tanks and fermentation kegs, this stopper features a specialized one way vent design. It allows high volumes of CO2 to escape safely while maintaining a 100% barrier against oxygen and outside contaminants. This eliminates the risk of 'suck back' or carboy

helping you produce a consistent

The burgundy top is not just for style

our premium food-grade silicone ensures a contamination-free environment for your vintage or sample

Bored (with hole)

providing a level of safety and quality assurance that professionals in the wine and medical fields trust

Oversized Precision Fit: Specifically tapered to fit large-format openings (2 3/16" bottom to 2 5/8" top)

and traditional rack-houses where the look of natural wood is preferred over synthetic stoppers

allowing for deep cleaning and sanitation between uses—essential for maintaining flavor purity in sequential batches

6 mm  2 3/16"  1 13/16"  1 7/8"

eliminating the need for a traditional water-filled airlock during long-term aging

Three Functional Styles:

non-venting design creates a hermetic seal that maintains vacuum pressure