Single Rubber Bung (Solid) - To Fit Glass Demi-John

This listing is for a single rubber bung without hole (stopper) to be used with a glass demijohn or a fermentation carboy.

The size of our bungs are 27mm base diameter x 31mm top diameter, and they are 32mm high. All measurements approximate.

Care should be taken never to stopper a Demi John that may have pressure build inside the vessel.