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Big Mouth Bubbler® Universal Single Port Lid

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Big Mouth Bubbler® Universal Single Port Lid

SKU: 41829

The first-ever universal lid for Big Mouth Bubbler® fermentors. Engineered to suit any fermentor in the Big Mouth Bubbler® family.

Free Shipping on Orders Over $45



The first-ever universal lid for Big Mouth Bubbler® fermentors. Engineered to suit any fermentor in the Big Mouth Bubbler® family.

From EVO 2 and Plastic to first-generation glass and even the Little Big Mouth Bubbler®, ribbed silicone rings ensure a completely air-tight seal. Better yet, the port is perfectly sized for all your standard homebrew tools, from a universal carboy bung and standard blowoff hose to a testing thief and auto-siphon.

Easy to clean, just pop it in the top rack of your dishwasher and run it through a standard cycle. You can also use your standard homebrew cleaners and sanitizers.

The universal lids all use a:
  • Small universal stopper
  • Standard 6.5 rubber stopper.
  • Details & Instructions

    Additional Information

    2.2 / 5.0
    25 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Buy the screw on type
    Poor seal batch dislocates it easily in secondary. Have to mitigate with duct tape - which is a pain in my arse
    November 14, 2018
    2 months ago
    Updated Bubbler lid with silicon rubber seal
    This new lid looked like it should seal better than the screw on plastic with foam seal lid that came with the Bubbler , but it does not. 3 batches showed no gases to blow off bottle or air lock after 1 day of high activity. Adjusting lid up and down resealed it 1 time so gas was observed and putting 10 lbs of weight worked once for the rest of week . I might try glue on the smooth inboard side of the seal next time. I used a fuel tank O-ring under the stock lid and got pretty good sealing but this should work better if I can solve the problem of it bypassing gas.
    October 25, 2018
    2 months ago
    Worst design ever
    Epic fail...why would anyone design a lid that doesnt stay in place/slides up. Go back to a threaded lid. Its a no brainer people
    September 19, 2018
    Universal Big Mouth Lids
    When I first used these & wasn’t real happy. Then I read another review someone said to turn the silicon gasket over. I tried this & it works great. I turned gasket upside down then wet it with sanitizer (goes on easier) & no creeping up. Before doing this I had to add weight to keep it down. Not now. Buying a few more.
    February 23, 2018
    great in theory but awful in execution
    I was horribly disappointed with this product. I was even more disappointed when I went to order Hills School ring and cap only to find they are no longer available. The unit consistently backs itself out of the bubbler. I was advised to reverse the Rubber seal but even that doesn't work and unfortunately I ended up cracking one of my plastic bubblers trying to work with this darn thing. my advice to people would be to not even waste their money purchasing due to the risk of contaminating the beer because of a poor seal and the extra steps you have to go through to keep the darn thing in place. I really wish they bring back the old ring system.
    May 22, 2017
    Poor Quality and Poor Design, but..
    Lame. Unless you put a brick on top of this lid it starts to "uncork" itself and slowly pops up. The original twist on lid ends up leaking around the cheap gasket. Poor design guys. So me the buyer says let me go ahead and get this cool blue lid to fix the problem.. nope. Just as bad if not worse.

    The solution to the leaky original twist off lid is a thicker rubber gasket. The solution to this lid is to put two bricks on it (one on either side).

    This is still worlds above what ancient Egyptians and Mesopotamians had to deal with in brewing their sweet beer in earthen vessels. Think about that and your buyers remorse for these lids becomes less painful.
    March 30, 2017
    over 2 years ago
    I bought 5 of these thinking I could replace my classic lids, I also did it simply because you can no longer purchase extra screw on tops for the glass bubblers or the two piece for plastic ones (I've got roughly 5 carboys of each). Basically, it was this or bust.

    These things keep slipping up. I saw the comment about 'they work best when dry' which is as insane as expecting my 10 gallons I just brewed last week using these for the first time to have not gotten infected (thanks for THAT $100 down the drain btw NB). The whole reason the caps are wet? StarSan.

    I suppose I could purchase cinder bricks to weigh it down until things dry, but thats asking for things to break or spill - especially the glass bubblers. Shouldn't a product designed for with home brewing methods? Unless there's some dry powdered sanitizer I'm unaware of, these products are useless.

    I'm shopping ebay to see if the old two piece lids are available so I can TRY to replace these, but if I strike out I'm returning all the bubblers I just bought too. this is ridiculous :/
    March 21, 2017
    1 year ago
    Response from Midwest Supplies
    Thanks for the review. We are sorry that you are disappointed with the lid, but will contact you to see if we can find a way to help with a better experience. One note on Star San, according to the general use instructions, all homebrewing applications should be allowed to air dry before use. We will contact you soon with some tips, tricks, and support to help improve your Big Mouth Bubbler experience.
    March 21, 2017
    Todd J Staff
    Works great with Little Big Mouth Bubbler
    Fits perfectly with the Little Big Mouth Bubbler and seals very well. There were several times where I had trouble getting the original lid with its foam gasket to seal completely but it was easy with this lid.
    March 7, 2017
    1 year ago
    These lids are the worst, never ever buy
    These things don't work. I don't know why they ever thought of making these. Read all the reviews on here, on other websites, they do not work. Under good fermentation they pop up, losing the seal. I have tried several of them, I have tried making sure everything is dry before placing in... nothing works other than weighing it down with a weight of some sort. Horrible. Wish I never bought the big mouth bubbler because of this horrible lid.
    February 21, 2017
    Great Vessel...Terrible Seal
    I was so excited to see a carboy I could easily clean. The problem is the lid does not stay in place. I have to use a ratchet strap to keep it closed. Any liquid on the o-ring and it pops off. I ordered 2 of these, the first one has the screw on lid which was also terrible. The seal provided was too thin and you had to tighten it too much to get a good seal. I ended up having to order the new style lid and cut a hole in the screw on lid and use that to seal it great...the problem is they no longer make or stock the old screw on lid so I'm stuck with the new style and having to tie it down...very annoying. DO NOT BUY UNTIL THEY IMPROVE THE LID!
    February 16, 2017
    Customer Q&A
    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 1 question Browse 1 question and 3 answers
    What is the correct size of stopper to use with these lids?
    Leland H on Feb 26, 2017
    Big Mouth Bubbler® Universal Single Port Lid
    Big Mouth Bubbler® Universal Single Port Lid
    Big Mouth Bubbler® Universal Dual Port Lid
    Big Mouth Bubbler® Universal Dual Port Lid
    BEST ANSWER: It takes a small universal stopper or a 6.5 stopper

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