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Drilled Rubber Stopper for Fermentation

$0.75$4.99

Drilled Rubber Stopper For Fermentation

  • Food Grade Durable Material
  • Drilled Hole Fits All Standard-Sized S- Airlock, 3 Piece Airlock, Triple Bubbler, etc. 
  • Creates an Airtight Seal Keeping Oxygen Out.
  • Many Bung Sizes to Fit a Variety of Fermenter Openings.
  • All Drilled Bungs Sizes Available: #2, #3, #5.5, #6, #6.5, #7, #7.5, #8, #8.5, #9, #9.5, #10, #10.5, #11, #13
  • Allows for Proper Fermentation While Preventing Contamination.
  • Easy to Clean and Can be Used Repeatedly.
Select a product variation to get estimate

Description

Drilled Rubber Bung Stoppers for Fermentation

Rubber bungs are used when fermenting to completely seal or create an airtight barrier between the airlock and opening of your fermenter.
Depending on your needs you have two options: Solid Rubber stoppers create a complete seal while drilled rubber stoppers have a hole drill into them which fits a standard size airlock or a small blow-off tube.

Drilled rubber stoppers come in assorted sizes and are required to create an airtight seal in most fermentation. Our food-grade drilled stoppers are made of solid rubber with a pre-drilled hole in the center. This hole is sized to fit all standard-sized airlocks and this blow-off tube. The rubber bung is tapered for a better seal and holds the airlock securely in place. The curved lip also stops the bung from accidentally sliding into your fermenter. These stoppers have many uses in fermentation which include beer brewing, cider, and winemaking, just to name a few.

How does the rubber stopper work?

Plug the stopper into the mouth of your carboy or fermenter and then insert the airlock. This will create an airtight seal that prevents oxygen contact during fermentation. The airlock will then let co2 escape while preventing oxygen from going back into your brewing vessel.

What size rubber stopper do I need for my fermenter?

Stoppers come in various sizes and are sized by number but what do these numbers mean? To determine the correct stopper size, measure the diameter of the mouth of your carboy or fermenter, and compare it to the rubber stopper size chart below. This chart will help you quickly determine which stopper you need by most popular brewing equipment and provides a diameter for each stopper style in inches.

Rubber Stopper Size Chart

Rubber Stopper Bung Size Chart What size to use wine beer cider

Rubber Stopper Bung Sizing Chart

Stopper Type Compatible With:
No. 2 Drilled Stopper fits standard beer and wine bottles.
No. 5 Drilled Stopper fits Big Mouth Bubbler® EVO 2 w/screw-on lid (older EVO 2 models) & Little BMB.
No. 6 Stopper Drilled or Solid fits standard 1 Gallon Jugs.
No. 6.5 Stopper Drilled or Solid fit Glass carboys, Big Mouth Bubbler® plastic (5 or 6.5 gallons), or EVO 2 w/ Universal Lid. The ideal fit is the 6-gallon carboy.
No. 7 Drilled Stopper fit 5 Gallon glass carboys
No. 10 Drilled Stopper fits 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.

Additional information

Weight .1 lbs
Dimensions 2 × 2 × 2 in
Size

#2 Drilled Rubber Stopper, #3 Drilled Rubber Stopper, #5.5 Drilled Rubber Stopper, #6 Drilled Rubber Stopper, #6.5 Drilled Rubber Stopper, #7 Drilled Rubber Stopper, #7.5 Drilled Rubber Stopper, #8 Drilled Rubber Stopper, #8.5 Drilled Rubber Stopper, #9 Drilled Rubber Stopper, #9.5 Drilled Rubber Stopper, #10 Drilled Rubber Stopper, #10.5 Drilled Rubber Stopper, #11 Drilled Rubber Stopper, #13 Drilled Rubber Stopper

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