Abstract: The present invention relates to a lid for glass bottles, preferably made of metal or any other type of suitable plastic material, comprising a body (1) with a skirt or external flange (2) that is segmented by conical slits, characterised in that said flange (2) comprises a plurality of longitudinal conical slits transverse to the axis of the lid and running around the periphery of the flange (2), designed to snugly fit over the external surface of the lip (4) of the neck (3) of the bottle to be sealed; the body (1) having been provided with a concentric V-shaped annular rib (5) which snugly fits against the internal contour of the mouth of the neck (3) of the bottle, which has a liner (7), said rib (5) defining an upwardly domed surface (6).