Plastic undrilled stopper. This universal style has a longer taper than rubber stoppers, for a snug fit and better seal. Fits plastic carboys, Better Bottles and Bubbler PET fermentors.

Universal bungs have a longer taper than standard rubber stoppers, for snugger fit and better seal. Plus a lip prevents bung from falling into carboy.

Top Diameter: 2.375″

Bottom Diameter: 1.656″

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.