Premium Breathable Silicone Bung for Barrels and Variable Volume Tanks

Premium Breathable Silicone Bung for Barrels and Variable Volume Tanks

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We recently discovered this premium breathable silicone barrel bung and were immediately impressed with its robust design and features. To start with, the built in tabs really help make bung removal effortless. But where the bung really shines is in its two-piece design. When set to the open position, the bung acts as an airlock and allows the release of CO2 while maintaining a seal against oxygen coming in. This makes the bung ideal for alcoholic or malolactic fermentation in barrels or tanks. When fermentation is over and you no longer want the bung to "breathe" out, you just push the center cap into the bung to create a firm seal and the FE497 becomes a solid stopper!

Fits most 30 and 60 gallon barrels as well as the hole in the lid of most Variable Volume tanks!

tapers from 1 7/8" to 2 1/4" diameter

Item # FE497
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.25LBS
Community Q&A

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Why did you choose this?
MoreFlavor Store
I can
Wade A R on Apr 25, 2019
Barrel aging beer
Jesse D on Jan 21, 2019
I can
Wade A R on Apr 25, 2019
"You may also need"
Barrel aging beer
Jesse D on Jan 21, 2019
john morton on Jan 11, 2019
Monte Scarlatto V on Dec 15, 2018
good reviews, need a replacement for variable tank airlock
Mike B on Nov 27, 2018
barrel aging beer
Orlando M on Nov 20, 2018
cause they work!
Joseph B on Oct 19, 2018
They are awesome
Mason I on Sep 20, 2018
Great for venting and fermentation. Dual purpose product and easy to clean.
Michael P on Jul 20, 2018
Brent J on Jul 9, 2018
perfect fit for most 5 gallon barrels. work great.
Joseph Liston on Jun 26, 2018
Best ones I've found
Paul P on Jun 14, 2018
recommended by fellow brewers.
Valued C on May 23, 2018
They are totally metal
Joseph B on May 19, 2018
Barrel aging beers
Dietrich D on Apr 3, 2018
best bung
Tom C on Mar 27, 2018
I needed an airlock for some barrel-aging. These have the best design.
James S on Mar 21, 2018
have barrels that need this
Valued C on Mar 16, 2018
back up for var. vol.
Bradley M on Feb 17, 2018
"You may also need"
john morton on Jan 11, 2019

4.8 / 5.0
14 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Good fit for Vadai 32 gal barrel
The Vadai barrels come with a wooden bung that does not seal. The silicon bung that "breaths" works very well.
March 30, 2019
5 months ago
Great accessory for barrel aged sours
We use the breathable bung for our barrel aged spontaneously fermented Belgian style sours, aka lambics. The bung is really well designed. It provides enough counter-pressure (even when in the open position) to not let any air in when the fermentation is inactive, like during colder periods. The fact that it is easy to clean is really good as a highly active fermentation will push the foam and yeast through the opening (see picture).
The bung does its work as the spontaneous fermentation kicks in for our Belgian style lambic.
The bung does its work as the spontaneous fermentation kicks in for our Belgian style lambic.
February 12, 2019
6 months ago
Response from MoreFlavor
Thank you so much for your feedback. We really appreciate the honesty and value great feedback like this as it helps us improve our products. Cheers!
February 13, 2019
Tyler W Staff
Nice design. Works as advertised. Thumb up
January 13, 2019
7 months ago
works as descibed. fits snuggly in the 3, 59 gallon wine barrels I am using.
September 12, 2018
11 months ago
Great idea
These bungs work great and eliminate the need for bubblers on my still fermenting barrels.
July 20, 2018
1 year ago
Great for barrels
These are great for spirit/wine barrels 15G or larger. Easy to clean though they do get stained over time.
April 2, 2018
1 year ago
love them
Can't live with out them, had other silicone bungs pop out during an unexpected secondary fermentation. well worth the price to prevent blown out end caps
February 14, 2018
1 year ago
Great Product
The Bungs fit great! It is always nice to know it will release any pressure if any fermentation takes place, no barrel explosion potential.
February 9, 2018
1 year ago
Great product
Fit perfectly. Easy to clean. My new go-to bung.
January 30, 2018
1 year ago
Wooden Cask, Averill House Vineyard
We gave these a shot on two cask, so easy to use. Not only do they fit great but interim tasting is easy with the center vent. Smacked it in with a mallet then popped the center piece in for a fabulous fit.
January 26, 2018
1 year ago