A lid suitable for closing a metal can, wherein the lid comprises a metal ring to which a peelable membrane is sealed, wherein the metal ring comprises: - an outer annular part adapted to be fastened to an edge of the lateral wall of a can body, and - an inner annular part , to which said peelable membrane is sealed, wherein the inner annular part includes a crown part extended by a curl delimiting a central aperture , wherein the crown part includes: - an upper annular face to which said peelable membrane is sealed by means of a sealing strip made of a heat-seal material, and - a lower annular face , opposed to said upper annular face , wherein the curl is formed on the side of the lower annular face of said crown part , wherein the curl includes: - an outer surface and an inner surface extending in continuation of the upper and lower annular faces of said crown part , and - a free edge arranged within said curl , wherein the outer surface of said curl includes a first connection portion that is arranged opposite and near a second connection portion of said inner annular part , delimiting an annular space between each other, characterized in that the outer surface and the inner surface of said curl are covered with a heat-seal material, and in that said first connection portion and said second connection portion are sealed to each other by means of said heat-seal material, to form a sealing gasket closing said annular space . wherein the metal ring comprises: - an outer annular part adapted to be fastened to an edge of the lateral wall of a can body, and - an inner annular part , to which said peelable membrane is sealed, - an outer annular part adapted to be fastened to an edge of the lateral wall of a can body, and - an inner annular part , to which said peelable membrane is sealed, wherein the inner annular part includes a crown part extended by a curl delimiting a central aperture , wherein the crown part includes: - an upper annular face to which said peelable membrane is sealed by means of a sealing strip made of a heat-seal material, and - a lower annular face , opposed to said upper annular face , - an upper annular face to which said peelable membrane is sealed by means of a sealing strip made of a heat-seal material, and - a lower annular face , opposed to said upper annular face , wherein the curl is formed on the side of the lower annular face of said crown part , wherein the curl includes: - an outer surface and an inner surface extending in continuation of the upper and lower annular faces of said crown part , and - a free edge arranged within said curl , - an outer surface and an inner surface extending in continuation of the upper and lower annular faces of said crown part , and - a free edge arranged within said curl , wherein the outer surface of said curl includes a first connection portion that is arranged opposite and near a second connection portion of said inner annular part , delimiting an annular space between each other, characterized in that the outer surface and the inner surface of said curl are covered with a heat-seal material, and in that said first connection portion and said second connection portion are sealed to each other by means of said heat-seal material, to form a sealing gasket closing said annular space . <EOS>