Abstract: The present application describes a metallic screw cap for bottles that comprises a cork section with truncated cone shape joined to the inner surface of the upper end of said cap. The metallic screw cap for bottles described in this invention allows easy implementation, i.e. it does not change the bottling process of bottles with metallic caps; it further enhances the sealing properties of the cap and promotes an increase of resistance of the metallic cap thereby allowing the already bottled bottle with the cap to be subjected to greater variations of pressure and temperature. The present invention is useful for bottling bottles of wine, spirit drinks, beer, sparkling wine, among others.