This breathable silicone stopper serves as both stopper and airlock. It allows carbon dioxide to vent off while protecting the fermentation from air and airborne contaminants.
Good for extended storage of beer or wine. Also suitable for slower fermenations, such as lagers or wild yeast fermentations.
Unlike traditional airlocks, there is no risk that the liquid from the airlock sucked into the fermenter if the temperature is lowered or the vessel is moved. Also there is no water to evaporate, which otherwise could be a problem with long time storage.
Very compact, making it ideal for fermentation and storage in tight spaces, such as inside refrigerators.
Upper diameter: 54 mm
Lower diameter: 47 mm
Conical height: 31 mm (Overall height: 43 mm)