DetailsRubber stoppers with a hole drilled in the center, perfectly sized to accept airlocks or what have you. All suggested "Best Fits" are for new carboys purchased from Midwest Supplies. If you've got an older carboy, jug or bottle, be sure to measure the mouth and use the dimensions provided.
- Details & Instructions
4.9 / 5.033 ReviewsFits 1 gallon jugsI use this on a recycled 1 gallon glass jug. I noticed that the containers of organic apple cider from my local natural foods store are almost identical to those gallon jugs Midwest stocks. They are a couple bucks more at the store but that doesn't factor in shipping or the fact that I get juice. Anyways, these fit and I intend to buy more.October 1, 2012WorksGood quality, cheap price. Nothing can go wrong with it unless you lose it :) _x000D__x000D_Remember, size 10 for your better bottlesOctober 3, 2012Solid Is BestOkay, My shop NEVER had the right size, So I got a "universal bung" they work but they trap dust in the cup and spillage from the occasional over foam in the lock. Solid bungs are easier to clean and hold the heavier, glass airlocks better.November 18, 2012Long lasting and good productI'm not sure what type of rubber these technically are, but they are dense, heavy, and very firm. Excellent quality. They don't seem to roughen up or breakdown over time._x000D__x000D_The only issue I've had is that you have to make sure the stopper and the neck of the bottle/carboy is very dry or they can creep up and out.November 27, 2012Best stoppers aroundI like these stoppers better than other drilled stoppers. They seem to stick in the neck of the carboy very well and the airlock stays in solidly. I recommend.December 28, 2012Used for a 6.5 Gal Glass CarboyThese are solid bungs and are easier to clean. They hold the heavier, glass airlocks better. Since I keep beer in these for a year or more, that is critical to me.January 10, 2013Great to plug a holeI have used these since the start of my brewing and they work great to keep out air. If you like simple and easy than these are for you.January 12, 2013For my 1 gallon experimentsThese a durable and wont get roughed up and abraded over time. Dense and firm. Just make sure the mouth of the jug or carboy is not wet when you place in the plug,January 28, 2013Holds the grip wellThe stopper is Excellent quality, its dense and firm. They hold the grip on the carboy well, and are air tight.February 12, 2013Nice and grippyI've used both the universal stoppers and the drilled rubber stoppers. While it is annoying to have to find the right size stopper to fit your carboys (especially when dealing with abnormally sized carboys) the drilled rubber stoppers are made of a lovely solid grippy material. As long as the carboy mouth is dry when you put it in, there are no worries about one of these popping out.February 19, 2013
- Customer Q&A
Browse 8 questions Browse 8 questions and 7 answersThe 6.5 stopper is that for the 6.5 garboy and 10 for the 10 gallon, etcBEST ANSWER: Hello Dennis
here's a helpful guide to stopper sizes:
Stopper Type Compatible With:
No. 2 Drilled Stopper Standard Beer bottles
No. 5.5 Drilled Stopper Big Mouth Bubbler® EVO 2 (5 gallon
6.5 gallon & Little BMB)
No. 6 Stopper Drilled or Solid 1 Gallon Jugs
No. 6.5 Stopper Drilled or Solid Glass carboys & Big Mouth Bubbler® plastic (5 or 6.5 gallon). Ideal fit is 6 gallon carboy.
No. 7 Drilled Stopper
& 5 Gallon glass carboys
No. 10 Drilled Stopper Bubbler® 5 or 6 gallon
Small Universal Stopper - Drilled or Solid Glass Carboys (3
6.5) & Big Mouth Bubbler® Plastic 5 or 6.5 gallon
Medium Universal Stopper - Drilled or Solid Bubbler® 5 or 6 gallonI have Better Bottle plastic carboys, both 5 & 6 gallon, and they have the same sized opening - 4.4 cm (1 3/4 inches) - which is the appropriatr stopper?BEST ANSWER: The Better Bottle carboys, and our similar "Bubbler" carboys will use the "Medium Universal Stopper" ( SKU 40490 ) or a #10 stopper ( SKU SD10 ) They are also available in an undrilled style. -Mike W, Midwest SuppliesWhat is the stopper size that fits the 6 gallon plastic carboy? some say #7 and some say #10 ?BEST ANSWER: If looking at The Bubbler 6 Gallon Plastic carboy, you want a #10 stopper.
If looking at our Plastic Big Mouth Bubblers or standard glass carboys, want a #7,What size stopper fits a regular gallon jug?BEST ANSWER: The number 6 fits the 1 gallon jug that we sell, but different styles of jugs can ave different size openings. For these, you'll want to refer to a stopper sizing chart (you can find them with a quick google search), or let us know the diameter of your jug's opening and we can let you know which one will work for you.what are the dimensions of the #7 and size 10 stoppersBEST ANSWER: 7: top-37mm bottom-20mm
10: top-50mm bottom-42mmwhat is the size of the #6 stopper?BEST ANSWER: No.6 stopper dimensions:
Top Diameter: 1.26"
Bottom Diameter: 1.024"
Length: 1"Where do I find the sizes in inches or mm?BEST ANSWER: Hi Harry,
We don't have that info on our site, but here's a chart that I refer to often:
Let me know if there's anything else I can help with. Cheers!
CharlesCan you tell me what size the hole that's drilled in the stopper is?