Patent ID: 7461755

Claim:
A moisture-tight closure and container comprising a cap having a top wall, a cylindrical skirt portion depending from said top wall, a circumferentially extending, tapered sealing lip depending from the top wall of said cap, said sealing lip being spaced radially inwardly from the skirt, a neck on said container, an annular upper end portion on said neck, a circumferential, axially extending annular slot coaxial with the longitudinal axis of said container provided in said upper end portion of said neck to thereby provide an inner annular wall portion and a radially outwardly spaced flexible annular outer wall portion, and means for releasably securing the cap to the container neck, whereby the sealing lip engages the outer surface of the flexible annular outer wall portion on said neck to flex only the annular outer wall portion of the neck inwardly, to thereby provide a moisture-tight closure.