Drilled gum rubber stopper. Used to provide a positive seal on fermentors. Drilled hole is compatible with standard airlocks.
Top Diameter: 1.26"
Bottom Diameter: 1.024"
Customer ReviewsWrite a review
Works for it's intended purpose. Fits great, but I would recommend putting air lock in stopper before putting stopper in jug. The inside diameter of the jugs can vary and you don't want to push the stopper into the jug.
it fits and the price is right
Works great with 1 gallon glass jungs for an airlock.
Fits and works as advertised. Also very cheap.