Thermowell and Grommet for Speidel Plastic Fermenters

Thermowell and Grommet for Speidel Plastic Fermenters

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Looking to add a thermowell to your Speidel plastic fermenter? This is the perfect way to do it. This thermowell replaces the airlock on top of your fermenter and uses the standard Speidel locking nut and gasket. The rubber grommet will fit standard 3/8 in. airlocks and the thermowell will accept most temperature probes.

Please note that while using the stock spigot lock ring and gasket for the thermowell, you will have to use the solid locking cap where the spigot is normally located. In order to use the thermowell and spigot silmultaneously, you will need to purchase a second spigot or lock nut.

Item # FE746
Shipping Eligible for Free Shipping Program
Availability California - Out Of Stock
Pennsylvania - In Stock
Weight 1 LBS
Community Q&A

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Browse 5 questions Browse 5 questions and 37 answers
Why did you choose this?
MoreFlavor Store
To get accurate temp readings
Robert J Fox J on Jan 13, 2023
Allows me to use my temperature control unit
James C T on Apr 23, 2022
To get accurate temp readings
Robert J Fox J on Jan 13, 2023
upgrade to fermenter
Randall B on Dec 17, 2022
Allows me to use my temperature control unit
James C T on Apr 23, 2022
need it
Norman David S on Feb 27, 2022
I have a spiedel fermentation vessel
John B on Apr 23, 2021
Starting to use high temp yeasts.
James T on Aug 24, 2020
Going to thermowell instead of attaching probe to side of tank
Steve C on Feb 11, 2020
Amazing upgrade
Scott B on Feb 8, 2020
I have a Speidel Fermenter and want better temp control
Wade S on Nov 1, 2019
So that I can monitor my beer temperatures more accurately.
Eddie M on Jun 22, 2019
need it
Kurt Swanson on Apr 3, 2019
Temp control
Salvatore F on Mar 22, 2019
To better control fermentation temperatures.
D S on Aug 31, 2018
Wanted a thermowell for new fermenter.
Ray on Aug 24, 2018
I want to know fermentation temperature directly
Jonathan B on Jul 7, 2018
Better temperature control during primary fermentation
marcus h on Jun 29, 2018
Just makes sense to pair it with the fermenter
Scott J on Jun 26, 2018
For better temp control
PMB-SG114468 Stuart G on Jun 26, 2018
Ideal for Speidel fermenters
Kevin M on Jun 26, 2018
Fermenting my first lager and want to make sure I get the right fermentation temps
Tom F on May 1, 2018
Because they finally make one for Speidel.
Justin H on Mar 21, 2018
When fermenting I like to get an accurate temperature inside the fermenter.
Denny N on Mar 16, 2018
Temp COntrol
Valued C on Feb 20, 2018
Better temperature control during fermentation
James M on Feb 19, 2018
looked good
Jay T on Feb 16, 2018
I want to see the REAL temp of my wort as it ferments rather than measuring ambient taped on the side of my fermenter
Scott E Balovich on Feb 2, 2018
seems like a clean way to add temp probe, I like the integration with the speidel top, hopefully my temp probe fits
Matt G on Jan 15, 2018
I'm brewing a saison -- in the winter -- so i need to keep it warm to finish up the fermentation.
Steve T on Jan 12, 2018
upgrade to fermenter
Randall B on Dec 17, 2022
need it
Norman David S on Feb 27, 2022
How long is the thermowell? Will it reach the middle of the 60L Speidel? Will it fit the temp probe from a STC 100 temp controller?
James Bowen on Jan 13, 2018
BEST ANSWER: The thermowell is 11.5 inches long, starting from the bottom side of the metal disc to the point where the unit begins to pinch. It will reach the middle of both 60L Speidel Plastic Fermenters (FE720 & FE730). We're unaware of the STC-100's probe dimensions, but the inside diameter of the thermowell is 0.25 inches.
Where can you purchase a second lock nut since you need two if you’re going to use this thermowell?
Brent Violette on May 15, 2018
BEST ANSWER: Hello Brent,
We currently do not carry spare locknuts for the Speidel FE746. We do offer a spare solid locknut, or one can be used from FE785.
Replacement NW10 Spigot for Speidel Plastic Fermenters
Replacement NW10 Spigot for Speidel Plastic Fermenters
Replacement Locking Cap for Speidel Fermenters
Replacement Locking Cap for Speidel Fermenters
I have a 15 gallon round Speidel fermenter and this seems like it will only work with the rectangle models?
Matthew Brown on Jan 21, 2018
BEST ANSWER: These will work for both the round and rectangle Speidel fermenters.
Is there a part number for the air lock grommets?
Richard Brobst on Nov 29, 2020
BEST ANSWER: If MoreBeer has a part number, I don't know it. Certainly the grommet is the weak link in this assembly. When mine failed, I took the failed part to a real hardware store (not a big box chain) where they have grommets in little bins for individual purchase. I was unable to find an exact match, but did find something that works: it is a rubber shoulder washer or bushing. Dimensions are as follows: top OD 0.75", bottom OD 0.5", hole diameter 0.25". When using it, first put the rubber part into the hole with the large part on top. Then use a little keg lube on the outside of the airlock and insert it into the hole. It will be a snug fit and that will expand the bushing to make a gas tight seal. It's working well on the current batch of beer. I bought two such bushings to have a spare. Good luck. If you find something better, let the rest of us know.

4.5 / 5.0
11 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Great for ferm temp control
Great for my speidel 30L in my ferm freezer. Bought an extra gasket and orange screw cap (one that holds the spigot) since the thermowell needs one to keep it in place. If you want to use this in conjunction with the spigot you'll need the screw cap
January 26, 2023
1 week ago
Rated 5 out of 5
Perfect for my Speidel fermenters. I can now keep a better track of the fermentation temperatures
January 3, 2023
1 month ago
Rated 5 out of 5
Happy Customer
Perfect solution to assuring a tight seal on my fermenter. Works great with my temperature probe and is very well made.
User submitted image
Added Dec 12, 2022
December 12, 2022
2 months ago
Rated 5 out of 5
Works well and is airtight
Works well and is airtight
March 31, 2022
10 months ago
Rated 5 out of 5
I really like the thermowell and actually bought 2 and would buy another if needed. My only complaint is that they do not include a gasket.
April 21, 2021
1 year ago
Rated 3 out of 5
Only complaint is that you can’t use the Speidel airlock with it.
November 17, 2020
over 2 years ago
Rated 5 out of 5
Handy adapter
This allows me to use my fermentation temperature controller with my Speidel fermenter as well as to use an ordinary airlock.
February 8, 2019
over 4 years ago
Rated 3 out of 5
Too short, no spare grommets
Well made. Bit expensive perhaps for what it is.
Would be better if it were about 2" longer. Even for the 30l Speidel, if you are little under with what gets racked to the fermented you might not be submerged.
Grommet came apart after 4-5 uses. I only noticed when I needed it and had no spared on hand. So it would have been good if they threw in a few extra. Especially at this price point.
January 31, 2019
over 4 years ago
Rated 3 out of 5
This should be at least a few inches longer in order to reach into the 60 L bucket when it is only half full. I'm putting ten gallons in and the well dose not touch liquid :(
July 24, 2018
over 4 years ago
Response from MoreFlavor
Hello Kevin - We can submit a note suggestion for an extended version. Thank you for the feedback.
July 31, 2018
Zach R Staff
Rated 5 out of 5
Loving it
Pay attention to the prior review and order an extra spigot to get the correct seal. Worked awesome with my Johnson controller. Don't guess on temp with a sticker, get down in it!
April 5, 2018
over 4 years ago