41/37mm Rubber Stopper for Demijohn Container

White rubber bungs serve as essential sealing components for demijohns and compatible containers across various applications such as winemaking, brewing, and laboratory work. Made from durable, premium-quality rubber, these bungs provide a secure and tight fit that prevents air and contaminants from entering the vessel.

Available in multiple sizes to fit different container openings (sizes sold separately), their flexible rubber construction ensures a dependable seal that protects the contents and supports the quality of the final product. The clean white colour lends a polished and professional look, suitable for both personal and commercial use.

Besides their excellent sealing function, these rubber bungs are easy to clean and sterilize, allowing for repeated and cost-effective use over time. Ideal for fermentation, storage, and experimental applications, they provide a practical solution to safeguard and maintain the contents of demijohns and similar vessels, ensuring consistent optimal results.