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FastRack

Fastrack Twin Bubble Airlock and Carboy Bung (2-Pack) | Fermentation Airlocks for Homebrewing Beer, Wine, Mead, and Kombucha

  • Based on 12,380 reviews
Condition: New
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Availability: In Stock.
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Arrives Monday, Jun 22
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Features

  • package dimensions :4.572 cm L x 12.573 cm W x 17.399 cm H
  • Product type :BOTTLE OPENER
  • country of origin:China
  • Package weight :2.0oz

Material: Plastic, Rubber


Color: Clear/Tan


Brand: FastRack


Item Weight: 68 Grams


Item Dimensions LxWxH: 3.15 x 1.97 x 3.15 inches


Is Customizable: No


Product Dimensions: 3.15"L x 1.97"W


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 3.15 x 1.97 x 3.15 inches; 2.4 Ounces


Item model number ‏ : ‎ U5-DOMI-5Q2S


Date First Available ‏ : ‎ November 13, 2012


Manufacturer ‏ : ‎ Fermtech


Best Sellers Rank: #1,803 in Kitchen & Dining (See Top 100 in Kitchen & Dining) #1 in Brewing & Fermentation Airlocks


#1 in Brewing & Fermentation Airlocks:


Customer Reviews: 4.6 4.6 out of 5 stars 12,380 ratings


Material: Plastic, Rubber


Color: Clear/Tan


Brand: FastRack


Item Weight: 30 Grams


Product Dimensions: 3.15"L x 1.97"W


Is Customizable: No


Unit Count: 2.0 Count


Number of Packs: 2


Manufacturer: Fermtech


UPC:


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 3.15 x 1.97 x 3.15 inches; 1.06 ounces


Item model number ‏ : ‎ B00A6TRKO4


Date First Available ‏ : ‎ November 13, 2012


Manufacturer ‏ : ‎ Fermtech


Best Sellers Rank: #7,924 in Kitchen & Dining (See Top 100 in Kitchen & Dining) #2 in Brewing & Fermentation Airlocks


#2 in Brewing & Fermentation Airlocks:


Customer Reviews: 4.6 4.6 out of 5 stars (13,846)


Brand Name: FastRack


Manufacturer: Fermtech


UPC: 628504292792 825392000052


Number of Items: 2


Item Form: physical component


Global Trade Identification Number: 52


Model Number: B00A6TRKO4


Manufacturer Part Number: B00A6TRKO4


Unit Count: 2.0 Count


Included Components: Airlock and Stopper (Pack of 2)


Item Type Name: Bubble Airlock and Bung (2pk)


Material Type: Plastic, Rubber


Item Weight: 30 Grams


Item Dimensions L x W: 3.15"L x 1.97"W


Color: Clear/Tan


Is Customizable?: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jun 22

This item is non-returnable:

This item is non-returnable

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Reliable airlocks for small home wine batches
These worked great during a recent 5 gallon wine fermentation. The bungs sealed tightly in my glass carboy and I didn’t notice any leaks or pressure issues. The twin bubble design made it easy to keep an eye on fermentation activity, especially during the first few days. They also cleaned up easily afterward which is always a plus with brewing equipment. Simple product, but dependable. ... show more
Reviewed in the United States on May 20, 2026 by Crystal norris
    • Quality bubblers! Quality bubblers!
Review Image by TwoFourSevenDIY
Review Image by TwoFourSevenDIY
Great for homemade wine making. I used these without the stopper on my primary fermenter and with the stopper on my secondary glass carboy. They are well made and work very well. I did notice the stoppers liked to slip up out of the neck of the glass carboy a little so I had to tie them down into the neck but this may be unrelated to the stopper itself. ... show more
Reviewed in the United States on October 27, 2025 Reviewed in the United States on October 27, 2025 by TwoFourSevenDIY
    • Best price
Works great. Great price b
Reviewed in the United States on March 2, 2026 by James Wilson
    • Deal Deal
Review Image by Don C.
Review Image by Don C.
Ordered two airlocks, but only received one. But did receive gallon jug with bing and cap for jug. I’ll call it a wash in my favor! I read the description more than once-said two airlocks and 0 about the other items. Guess have to try it out! Plastic airlock…
Reviewed in the United States on March 6, 2026 Reviewed in the United States on March 6, 2026 by Don C.
    • Works great - cost effect way to make your own fermenter lid Works great - cost effect way to make your own fermenter lid
Review Image by siegsuwa
Review Image by siegsuwa
I bough this to make a primary fermenter out of a 5-gallon bucket lid. It was super easy. Just had to buy the right grommet and drill a hole. Some measurements as I thought it may help others: Outside Diameter of the air lock stem is 7/16" (0.43" as measured by my caliper) I purchased a 3/8" nominal rubber grommet (0.375" inside diameter) for a nominal hole side of 1/2". I used a step drill to make a hole just slightly larger than 1/2". It may have been closer to 9/16ths. Step dril works great for this as you can size it up slowly to test your fit, and the step shoulders de-burr the hole. Installed the grommet, and pressed in the air lock. It is a tight fit and the rubber grommet is firmly, but not over-compressed. It has formed a tight air seal and the fermenter is bubbling as a I type. Air lock is a simple device that works great. ... show more
Reviewed in the United States on September 11, 2023 Reviewed in the United States on September 11, 2023 by siegsuwa
    • Good product
Works well
Reviewed in the United States on March 30, 2026 by justin stallings
    • Right kind
Fast delivery
Reviewed in the United States on April 12, 2026 by Dave
    • Good product
Been using these for three years and they’re still kicking so they still work rubber still good everything
Reviewed in the United States on March 8, 2026 by john w.

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