Stoppers & Bungs

Most fermenting vessels require a stopper to hold an airlock in place or seal it up while moving. We carry a variety of sizes for glass and plastic carboys, as well as, gallon jugs and bottles.

Not sure which is the correct stopper for your purposes? Consult our stopper information table below:

Stopper Type Compatible With:
No. 2 Drilled Stopper Standard Beer bottles
No. 5 Drilled Stopper Big Mouth Bubbler® EVO 2 w/screw-on lid (older EVO 2 models) & Little BMB
No. 6 Stopper Drilled or Solid 1 Gallon Jugs
No. 6.5 Stopper Drilled or Solid Glass carboys, Big Mouth Bubbler® plastic (5 or 6.5 gallon) or EVO 2 w/ Universal Lid. Ideal fit is 6 gallon carboy.
No. 7 Drilled Stopper 5 Gallon glass carboys
No. 10 Drilled Stopper Bubbler® 5 or 6 gallon
Small Universal Stopper - Drilled or Solid Glass Carboys (3, 5, 6, 6.5), Big Mouth Bubbler® Plastic 5 or 6.5 gallon or EVO 2 w/ Universal Lid.
Medium Universal Stopper - Drilled or Solid Bubbler® 5 or 6 gallon
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Showing 21 products for "Stoppers & Bungs"
Small Universal Stopper - Drilled

Small Universal Stopper - Drilled

$2.49

Fits glass carboys, seals easily when wet, and won't fall in. Drilled to accept an airlock (#7008 and #7010). Universal bungs have a longer taper t...

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Small Universal Stopper - Solid

Small Universal Stopper - Solid

$2.79

  Great for holding cleaning solutions in your carboy or keeping dust out during storage. Universal bungs have a longer taper than standard rubber ...

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No. 6 Stopper - Drilled

No. 6 Stopper - Drilled

$2.29

Drilled gum rubber stopper. Used to provide a positive seal on fermentors. Drilled hole is compatible with standard airlocks. Top Diameter: 1.26...

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Foam Stopper 46-50mm

Foam Stopper 46-50mm

$3.49

Breathable foam stoppers will withstand boiling or autoclaving temperatures, making them ideal for use in preparing a yeast starter. The honeycomb ...

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No. 6.5 Stopper - Drilled

No. 6.5 Stopper - Drilled

$2.49

Drilled gum rubber stopper. Used to provide a positive seal on fermentors. Drilled hole is compatible with standard airlocks. The #6.5 stopper w...

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Medium Universal Stopper - Drilled

Medium Universal Stopper - Drilled

$2.99

Plastic bung with a drilled hole for airlocks. This universal style has a longer taper than rubber stoppers, for a snug fit and better seal. Fits p...

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Standard Carboy Cap - 3/5/6/6.5 gallon glass carboys

Standard Carboy Cap - 3/5/6/6.5 gallon glass carboys

$6.99

Fits standard 3, 5, 6, or 6.5 gallon glass carboys. Put a racking tube through the center spout, fit the cap over the mouth of the full carboy, the...

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Foam Stopper 35-45mm

Foam Stopper 35-45mm

$2.29

Breathable foam stoppers will withstand boiling or autoclaving temperatures, making them ideal for use in preparing a yeast starter. The honeycomb ...

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38mm Screw Cap with Hole

38mm Screw Cap with Hole

$2.49
Out of Stock

This reusable 38 mm screw cap will fit our 1 gallon and 1/2 gallon jugs and CBD Growlers. It is made of plastic and has a hole in the middle, which...

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No. 10 Stopper - Drilled

No. 10 Stopper - Drilled

$3.99

Drilled gum rubber stopper. Used to provide a positive seal on carboys. The #10 Drilled Stopper works well with Better Bottles and Bubbler PET ferm...

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No. 6 Stopper - Solid

No. 6 Stopper - Solid

$2.29

Undrilled gum rubber stopper. Used to provide a positive seal on carboys. Top Diameter: 1.26" Bottom Diameter: 1.024" Not sure if this...

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Big Mouth Bubbler Extra Lid Gaskets - 5 Count

Big Mouth Bubbler® Extra Lid Gaskets - 5 Count

$1.99

When you've loved your glass Big Mouth Bubbler® so much that the lid seal is starting to show wear, stocking up on extra lid gaskets and keeping th...

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Rubber Mini Keg Bung

Rubber Mini Keg Bung

$2.49

The 2 piece Rubber Mini Keg Bung is a reusable bung that is used to seal the mini keg when carbonating your beer. After 2 -3 weeks of carbonation t...

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No. 6.5 Stopper - Solid

No. 6.5 Stopper - Solid

$2.49

Undrilled gum rubber stopper. Used to provide a positive seal on carboys. The #6.5 stopper works well with our glass carboys and Big Mouth Bubbler ...

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No. 5 Drilled Stopper

No. 5 Drilled Stopper

$2.19

Drilled gum rubber stopper. Used to provide a positive seal on fermentors. Drilled hole is compatible with standard airlocks. Top Diameter: 1.048" ...

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Medium Universal Stopper - Solid

Medium Universal Stopper - Solid

$2.99

Plastic undrilled stopper. This universal style has a longer taper than rubber stoppers, for a snug fit and better seal. Fits plastic carboys, Bett...

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No. 7 Stopper - Drilled

No. 7 Stopper - Drilled

$3.29
Out of Stock

Drilled gum rubber stopper. Used to provide a positive seal on fermentors. Drilled hole is compatible with standard airlocks. Top Diameter: 1.45...

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No. 2 Stopper - Drilled (5 Pack)

No. 2 Stopper - Drilled (5 Pack)

$6.99

Drilled gum rubber stopper. Used to provide a positive seal; works well with standard beer bottles. Drilled hole is compatible with standard airloc...

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Acid Carboy Cap - 6.5 gallon acid carboys

Acid Carboy Cap - 6.5 gallon acid carboys

$6.99

Fits 6.5 gallon glass acid carboys. Put a racking tube through the center spout, fit the cap over the mouth of the full carboy, then blow hard into...

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Bung for 5 Gallon Barrels

Bung for 5 Gallon Barrels

$15.99

This solid silicone bung fits 5 gallons oak barrels. Perfect for the vintner that utilizes the tried and true method of barreling and doesn want to...

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Bung for 10 through 30 gallon Barrels

Bung for 10 through 30 gallon Barrels

$15.99

This solid silicone bung will fit 10, 15, and 30 gallon barrels. A nice option for any brewer or vintner to put a seal on their barrel. The ...

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