Abstract: A closure for a container consists of a top wall with an annular skirt depending therefrom and extending downwardly to a terminating edge. An inner surface of the annular skirt has a retaining bead in an upper portion of the inner wall. If threads are to used on a finished closure, then such threads, as desired, replace the retaining bead. Additionally, the top wall has a flexible annular ring formed axially along an inner surface and depending downwardly therefrom and spaced inwardly of the skirt. A sealing disc is disposed above the retaining bead and below the flexible annular ring. The flexible annular ring has a diameter larger than the inner diameter of the retaining bead. Furthermore, the flexible annular ring is the same diameter as a container rim of a container to be sealed by the closure of the present invention. Another preferred closure substitutes a glue post mounted along an inner surface of the top wall for the retaining bead in order to attach the sealing disc to the inside of the closure.

Abstract: A closure-container package is illustrated in which the closure is pressed-on to the container neck and threaded off the container neck. Either the container neck or the closure has a helical thread which engages axially extending ribs on the other of the container neck or closure to form indentations in the ribs which act as threads, teeth or a track for unthreading. A continuous or rotary seal is used between the container neck and the closure which does not require a sealing force from the threaded connection.