Rubber Stopper W/Hole (#12)

Plastic 3-piece airlock.  Fits standard grommeted lids, carboy bungs, and rubber stoppers.  Easy to take apart and clean.

White, rubber bung with longer taper for snugger fit and better seal. Lip prevents bung from falling into carboy. Fits 54L Demi-John.

Pure white gum laboratory stopper - with 3/8" drilled center hole. Top diameter: 2 11/16" Bottom diameter: 2 5/16"

Twin bubble airlock.  Fits all standard rubber stoppers and bungs.