Abstract: A sealing device for a container, which has a vault and an opening defined in the vault of the container, includes a skirt upwardly extending from the vault of the container surrounding the opening the in the vault of the container and having a distal edge formed with a series of teeth. A hollow guider is partially longitudinally received in the skirt. The guider includes a body received in the skirt and having an annular lip laterally extending from the body. The guider has a series of teeth formed on the annular lip and corresponding to the series of teeth of the skirt. The series of teeth of the guider is engaged to that of the skirt to prevent the guider from being rotated. A cap is mounted to the skirt for covering the skirt and the hollow guider.