Carboy Airlock and Bung

Once the wine is in the carboy or secondary fermenter, it will need to be sealed with an airlock.

The airlock is stuck into a rubber bung which has a hole in it. Then the bung with the airlock is placed into the opening of the carboy. This allows the CO2 to escape and not let any air into the carboy.

Make sure you have the appropriate amount of water in the airlock to keep the air out.