Sealing device for container aperture has skirt prevented from radially expanding by grip part when sealing part has been coupled to it

摘要

The sealing device (10) comprises a sealing part (12) and a grip part (14) for coupling to it. The sealing part has a stopper section (32), a slotted skirt (16) and a thread (34). The grip part has a matching thread (68). Once the sealing part has been coupled to the grip part, the skirt cannot expand radially due to the grip part.