The rubber stopper with a hole for fermentation tube or airlock to use with demijohns or carboys
The corks available for sale have certificates allowing them to contact with food products. The plugs are provided with a hole in which a fermentation tube (glass or plastic) can be mounted.
Stoppers are made of PVC.
Please choose a size you are interested in from ''size'' drop down menu
How to use rubber stopper:
Synthetic plugs for demijohns, carboys - it is recommended to wash them thoroughly with warm water and washing-up liquid before use, then dry them thoroughly. This is necessary to remove the layer of silicone left over from the production process that may cause the cork to slip out of the balloon during fermentation.