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Cellar Science

Universal Breathable Bung for Glass Carboys

Universal Breathable Bung for Glass Carboys

A breathable Silicone stopper that acts as both a stopper and an airlock. The unique design allows CO2 pressure to escape but keeps Oxygen and airborne contamination out. A popular style used by numerous commercial wineries.

  • Fits 3, 5, 6 & 6.5 gallon glass carboys, 1 gallon bottles, growlers, and 500 mL flasks.
  • Replaces Stopper Sizes #6, #6.5, #7, #8
  • Stopper Measurements: 0.94" x 1.48" (24 mm x 37.5 mm)
  • The flapper stopper protrudes roughly 2.5" from the stopper to allow for easy assembly

Additional Sizes Include:

  • Universal Breathable Bung for Plastic Carboys
  • Breathable Barrel Bung
  • Set of All Three Breathable Bungs
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