This white airlock stopper measuring 43 × 40 mm is a reliable solution for home and professional fermentation of wine, beer, or musts. It is made of durable polyethylene approved for food contact, and thanks to the opening for a fermentation tube it ensures safe CO₂ release without letting in contaminants.
It includes a practical cap that allows you to easily seal the neck of the demijohn after fermentation. The stopper fits commonly used 10, 15, 20, 25, and 34 liter demijohns. Before first use, we recommend washing thoroughly with warm water and dish soap to remove manufacturing residues and ensure trouble-free fermentation.
