Used to provide a positive seal on your carboy. Drilled hole is compatible with standard airlocks.
Top Diameter: 1.26″
Bottom Diameter: 1.024″
Not sure if this is the correct stopper for your purposes? Consult our stopper information table below:
Stopper Type
Compatible With:
No. 2 Drilled Stopper
Standard Beer bottles
No. 5 Drilled Stopper
Big Mouth Bubbler EVO 2 w/screw-on lid (older EVO 2 models) & 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) or EVO 2 w/ Universal Lid. Ideal fit is 6 gallon carboy.
No. 7 Drilled Stopper
5 Gallon glass carboys
No. 10 Drilled Stopper
PET Plastic Carboy 5 or 6 gallon
Small Universal Stopper – Drilled or Solid
Glass 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 Solid
PET Plastic Carboy 5 or 6 gallon
California Proposition 65
Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.