Pack of 3 Rubber Bungs (With Holes For Airlocks) - To Fit Glass Demi-Johns

This listing is for a pack of 3 rubber bungs with holes to be used in conjunction with airlocks in glass demijohns and fermentation carboys.

The size of these bungs are 27mm base diameter x 31mm top diameter, and they are 32mm high. Drilled with an 8mm hole to take an airlock. All measurements approximate.

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

Please Note that these bungs are not suitable for use with the 5 litre glass demi-johns with ovaled necks that we are currently selling.