Model No: AGN-1320
They are cylindrical or conical sealing devices designed to close or block the openings of tubes, flasks, containers, or systems while allowing some form of passage or ventilation due to their hollow internal structure. Unlike solid stoppers, hollow stoppers may include a central bore, channel, or tubing connection, making them useful for applications involving gas flow, pressure equalization, or insertion of instruments. They are commonly made of rubber, silicone, or synthetic materials and are widely used in laboratory setups, industrial systems, and fluid/gas handling systems.