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Medium Universal sized rubber bung for fermentation air lock

Medium Universal Stopper with Hole

by The Vintage Shop
$2.39 - $2.39
$2.39
$2.39 - $2.39
$2.39

Medium Universal Drilled Stopper

This medium universal stopper is a handy option when you need a little flexibility in fit across different fermentation vessels. The tapered rubber body helps it seat in a range of openings, and the pre-drilled center hole lets you install a standard airlock for active fermentation.

Size details

  • Top diameter: 49 mm
  • Bottom diameter: 43 mm
  • Center hole: drilled for use with a typical fermentation airlock

This is a solid choice for brewers, winemakers, cider makers, and mead makers who need a replacement bung or want a spare on hand for secondary vessels. Pair it with our Double Bubble Airlock or Three Piece Airlock to finish the setup. As always, check your vessel opening before ordering since stopper fit can vary by fermenter.