No. 5.5 Stopper - Drilled


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Drilled gum rubber stopper. Used to provide a positive seal on fermentors.

Top Diameter: 1.102"

Bottom Diameter: 0.945"


Availability: Out of stock

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  • No. 5.5 Stopper - Drilled
  • Pic of SD5.5
Product Details

Drilled gum rubber stopper. Used to provide a positive seal on fermentors. Drilled hole is compatible with standard airlocks.

Top Diameter: 1.102"

Bottom Diameter: 0.945"

Not sure if this is the correct stopper for your purposes? Consult our stopper information table below:

Stopper TypeCompatible With:
No. 2 Drilled StopperStandard Beer bottles
No. 5.5 Drilled StopperBig Mouth Bubbler® EVO 2 w/screw-on lid (older EVO 2 models) & Little BMB
No. 6 Stopper Drilled or Solid1 Gallon Jugs
No. 6.5 Stopper Drilled or SolidGlass carboys, Big Mouth Bubbler® plastic (5 or 6.5 gallon) or EVO 2 w/ Universal Lid. Ideal fit is 6 gallon carboy.
No. 7 Drilled Stopper5 Gallon glass carboys
No. 10 Drilled StopperBubbler® 5 or 6 gallon
Small Universal Stopper - Drilled or SolidGlass Carboys (3, 5, 6, 6.5), Big Mouth Bubbler® Plastic 5 or 6.5 gallon or EVO 2 w/ Universal Lid.
Medium Universal Stopper - Drilled or SolidBubbler® 5 or 6 gallon
Additional Information
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Browse 2 questions Browse 2 questions and 6 answers
Will this fit the Universal Big Mouth bubbler lid?
A shopper on Feb 4, 2017
BEST ANSWER: Yes, this #5.5 stopper will fit the grey plastic Big Mouth Bubbler Lids. A #6 stopper is just a bit too big. Buy a couple of these stoppers, in my experience the drilled hole is a little too tight to easily remove the stem of a 3 piece airlock and it is easy to crack the plastic airlock. Best to have a couple of each on hand just in case!
Will this fit the 1 gallon starter fermenter jugs
K N on Jul 29, 2016
BEST ANSWER: No, you'll need the no. 6 stopper for that.

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