Solid silicon bungs do not perish or leach chemicals or aromas like rubber bungs. They are made with food grade silicon and can handle temperatures up to 180C. They also have excellent chemical resistance to a wide range of acid and alkaline cleaners and sanitisers.
This size bung is designed to fit a 5L demijohn and 23L Glass Fermenter. We always recommend measuring your bung hole prior to purchasing
Top Diameter: 25mm
Bottom Diameter: 38mm