Rubber-coated plastic bung for fermentation jar

摘要

Bung for a fermentation jar comprises a gas tube which is bent round into the cavity of the bung, and is pref. made of resilient plastic with a rubber coating on its outer wall.As the bung is hollow and filled with water in which the gas tube is submerged, inefficient sealing of the gas tube in the bung is obviated. The whole manipulating process is simple, and mfr. is cheap. The bung can be compressed to any dimension as required.