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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
recommended by fellow brewers.
Valued C on May 23, 2018
Barrel aging beers
Dietrich D on Apr 3, 2018
recommended by fellow brewers.
Valued C on May 23, 2018
They are totally metal
Joseph K 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
They are totally metal
Joseph K B on May 19, 2018
best bung
Tom C on Mar 27, 2018

4.8 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
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
2 months ago
Stopped My Bughole Right Up
Works as advertised, now nothing can get in or out of my bunghole. If you have a problem with things getting into your bunghole, I suggest you try these out!
February 19, 2018
4 months 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
3 months 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
4 months ago
Great product
Fit perfectly. Easy to clean. My new go-to bung.
January 30, 2018
4 months 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
5 months ago
Best Bung
I now use these on all my barrels. Supper easy to use and works well. Use them open or closed.
January 25, 2018
4 months ago
works great in brewery barrels
Perfect in 225L wine barrels and 200L liquor barrels - allows venting when needed.
January 31, 2017
Great bung that allows venting!
Not too much to be said about this bung, but it works great in the 225L wine barrels and 200L whiskey barrels we use in the brewery. The vent plug comes in extremely handy especially for finishing fermentations in the barrel, and doesn't seem to have an effect on oxygen permeability as far as I can tell.
March 17, 2014
Does not fit the 23 liter Vadai barrel
This is a nice stopper. But it does not even come close to fitting the 23 liter Vadai barrel, as recommended by this site. No reflection on the quality of the product though.
December 17, 2012
Response from MoreFlavor
Too big or too small for 23L?
December 22, 2017