Airlock For Fermentation - S-Shaped

Airlock For Fermentation - S-Shaped

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S-shaped airlocks are the "OG" airlocks for home beer and winemaking. They make it easy to spot fermentation activity, and have no loose peices to lose.

The advantage of this type of airlock is that they have a smaller chamber so you can more closely observe the CO2 rising and therefore the rate of fermentation. They are also handy when you are cooling a beer as there is less chance of sucking airlock water back into the fermentation. They cannot be cleaned manually if they get dirty during the ferment. That is why many homebrewers prefer 3-piece airlocks for the active portion of the ferment, when the krausen (foam) from fermentation might be pushed up into the airlock.

Please Note: Stopper Not Included. 

Item # FE371
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.06 LBS
Community Q&A

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Why did you choose this?
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add to inventory
Barry Y on Jan 16, 2021
stay cleaner
john l on Dec 30, 2020
add to inventory
Barry Y on Jan 16, 2021
Backup airlock
Warren O. on Jan 7, 2021
stay cleaner
john l on Dec 30, 2020
Wine making
Timothy F K on Dec 29, 2020
Need beer
Melanie F on Dec 27, 2020
saw this used on youtube
Gregory S on Dec 16, 2020
i like this kind
john l on Dec 15, 2020
need for fermentation
Lora T on Dec 10, 2020
Misael M on Dec 8, 2020
To go with the 3gal carboy and extra
Bryan K on Dec 1, 2020
Steven G on Nov 25, 2020
Anthony P on Nov 22, 2020
Because I need it.
Albert Bryan B on Nov 19, 2020
saw it on a video
deanne o on Oct 28, 2020
Spare part
Daniel T on Oct 22, 2020
using for a pickling bucket
Marc H on Oct 20, 2020
These work great
James R S on Oct 14, 2020
mead brewing
Melissa F on Oct 11, 2020
try new type
Eric R on Oct 6, 2020
Good for Secondary Racks
Bryan & Jenna K on Sep 22, 2020
I want it.
Michael S on Sep 19, 2020
need it
Richard R on Sep 18, 2020
for wine making
Uriel A on Sep 18, 2020
James K on Sep 16, 2020
juan l on Sep 12, 2020
They work well.
Theresa Jan E on Sep 9, 2020
try both
Ryan D on Sep 9, 2020
No wine making equipment in my area
James W on Sep 5, 2020
carboys w/o tops
Peter W on Sep 3, 2020
Always nice to get fresh new airlocks. They are inexpensive and perfect for fermenting and storing carboys in my attic
Jeff P on Sep 1, 2020
current use
william r on Sep 1, 2020
Looking for a better airlock
Daniel F on Aug 25, 2020
need back-up airlock
Brittany A on Aug 15, 2020
A little bit easier to see the gas leaving, keep track of any potential leaks
Cameron L on Aug 7, 2020
Same as above
Gary S on Jul 18, 2020
i saw it on a YouTube tutorial
Trevor P on Jul 15, 2020
Mike P on Jul 14, 2020
I like this style
Richard S on Jun 26, 2020
necessary and good price
Eugene G on Jun 16, 2020
David L on Jun 15, 2020
Horus Aged Ales Recommended it to me
Reinaldo S on Jun 9, 2020
looks cooler than 3 piece? idk man...
Erich R on May 29, 2020
replace one I broke
Carl S on May 26, 2020
Michael B on May 22, 2020
For cider!
Angelica M on May 16, 2020
Because I need it?
Frank G on May 5, 2020
Just decided to pick up another, you can't have too many of these.
Tina G on May 2, 2020
No moving parts to clean or lose
KEVIN T on May 2, 2020
prefer it over 3 pc because of durability simplicity
Robert B on May 1, 2020
I've used s shaped before and like them.
Anthony H C on Apr 28, 2020
Backup airlock
Warren O. on Jan 7, 2021
Wine making
Timothy F K on Dec 29, 2020

4.0 / 5.0
38 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Best airlock
I prefer these to the 3 piece one.
January 1, 2021
1 month ago
Rated 5 out of 5
Easier to see bubbles than the 3-piece
So far, I like this airlock much better than the 3-piece one I had. It's probably harder to clean, but not sure that's an issue yet.
October 5, 2020
3 months ago
Rated 5 out of 5
Nice bubbler
Always like to keep these looking like new. These fit neatly to the carboy plugs and work well.
September 21, 2020
4 months ago
Rated 4 out of 5
S-shaped Airlock
These are good. The only thing I'd complain about is that they are not very strong and can break if you twist them whilst trying to get them out of the stopper.
September 15, 2020
over 2 years ago
Rated 3 out of 5
Works perfectly, a bit brittle
Not a lot of options out there. These things work perfectly until they break. I’ve had a few snap with very little force, attempting to twist pull them out of a bung.

I’ll continue to buy these, but I wish there was a more solid solution
June 5, 2020
over 2 years ago
Rated 5 out of 5
I only use S shaped airlocks
I put just enough water in to fill the bottom U in the airlock. That minimizes back pressure while still maintaining an air lock.
April 28, 2020
9 months ago
Rated 5 out of 5
Works great,fits the job I needed for.
October 24, 2019
1 year ago
Rated 5 out of 5
Works great for the home brewer
July 8, 2019
1 year ago
Rated 5 out of 5
Good product.
Purchased a few of these over time so I can have different batches in fermenters at the same time. Prefer these over the three piece airlocks.
January 18, 2019
over 2 years ago
Rated 5 out of 5
Very practical air lock
Even though these air locks may seem flimsy compared to the three piece air locks, they work much better for me.
Not having to keep track of three pieces.
Even a teaspoon of liquid will still maintain an air lock
January 9, 2019
over 2 years ago