FIELD: packing. SUBSTANCE: seal has cap with ring enclosing bottle neck, and sealing ring. Sealing ring adjoins, at least on separate sections, inner surface of bottle hole. Rings are concentric and made integral with sealing cap. Sealing ring is provided with several stiffening ribs from inside forming wrinkled star-shaped profile . Stiffening ribs serve as flexible support for sealing ring when cap is fitted on. EFFECT: provision of guaranteed tightness when sealing bottles with diameters of holes varying within tolerable limits. 16 cl, 19 dwg
