An airlock allows gas to escape during fermentation while keeping the vessel free from external exposure. We have several different airlocks to choose from to fit your specific application. The S-Shaped airlock is perfect for longer and less vigorous fermentations like lagers, sours and in winemaking. The 3 piece airlock is perfect for ales and is easier to take apart and clean. If you have any questions about what is the correct airlock is for your application please feel free to give us a call or email by clicking on the Contact Us link at the bottom of this page.