Capping device (20) for a container (1) provided with a neck (12), this device comprising a plug (21) and a cover (24) of plastic material suitable for covering both the neck and the cap on its place on the neck, the cover comprising a ring (25), suitable for surrounding the cap and neck in mounted configuration and provided with means (253) for closing on the neck, as well as a cover (26), in which, - the ring (25) and the cover (26) are made in a single monobloc piece, - the ring (25) and the cover (26) are joined by at least one part (27) which is divisible by means of an effort (E1) parallel to a central axis (X25) of the ring and directed towards the plug (21) and - the cover is equipped with a support element (262) against the plug (21). characterized in that - the divisible part is formed by bridges (27) that extend radially between an external radial edge (261) of the cover (26) and an internal radial edge (257) of the ring (25) and - a light ( 28) A circle arc is defined between two adjacent bridges (27), along the outer radial edge (261) of the cover and the inner radial edge (257) of the ring and because this light has a radial width (l28) less than 0.3 mm and an axial height (H28) greater than 0.15 mm.Dispositivo de taponado (20) para un recipiente (1) provisto de un cuello (12), comprendiendo este dispositivo un tapón (21) y una cubierta (24) de materia plástica apta para recubrir a la vez el cuello y el tapón en su lugar en el cuello, comprendiendo la cubierta un anillo (25), apto para rodear el tapón y el cuello en configuración montada y provista de medios (253) de cierre sobre el cuello, así como una tapa (26), en la cual, - el anillo (25) y la tapa (26) están realizados en una sola pieza monobloque, - el anillo (25) y la tapa (26) están unidos por al menos una parte (27) que es divisible por medio de un esfuerzo (E1) paralelo a un eje central (X25) del anillo y dirigido hacia el tapón (21) y - la tapa está equipada con un elemento (262) de apoyo co
