Abstract: A stopper for sealing a bottle comprising a core having a top surface, a bottom surface and one or more side surfaces and an enclosure that covers the bottom surface and the one or more side surfaces of the core. The seal between the stopper and the inner surface of the neck of the bottle is formed with a radially protruding sealing member that circumferentially engages the enclosure. The core may be made of materials selected from cork, synthetic cork, material that simulates cork or from combinations thereof. The core may also be made of other materials that may create a pleasing design for a particular application or need. The sealing member may be an O-ring that may be received by an O-ring gland formed in the enclosure or the sealing member may be injection molded with the enclosure, wherein the sealing member and the enclosure form an integral piece.