Screw stopper system with a prolonged seal

摘要

A screw stopper system with a prolonged seal consists of a stopper (10) equipped with a cylindrical skirt (11) closed by a bottom (20) with a nut screw (13) suitable for being inserted on the mouth end (50) of a bottleneck (40) in turn equipped with a threading (45), the skirt (11) also being connected to a security band (15) by means of bridges (16), the bottom (20) being provided with an internal sealing strip (21) and a smaller external sealing strip (22) positioned outside the former, so as to surround the mouth end (50) of the bottleneck (40) to ensure sealing.