Creates a closed system that allows carbon dioxide out and prevents oxygen and harmful bacteria from getting in. Lets fermentation gas out and to keeps air from reaching the beer or wine. Perfect for secondary fermentation, preventing back-flush into the fermentation chamber during ambient temperature changes in the room.

Plastic airlock Creates a closed system that removes carbon dioxide and prevents oxygen and harmful bacteria from entering. 3 piece plastic Airlock provides an effective interface for one-way gas movement. Seal the mouth of fermenter or carboy with a rubber stopper. Sanitize the airlock before every use. For additional information regarding the product, please contact with DuBuy support team.