Abstract: A package, especially for granular, powdered or fluid product, includes a container with a spout extending upward and inward from a threaded neck and then flaring outward to terminate in a circular rim forming a wide mouth container opening. A closure as an end wall coextensive with the container rim in a skirt curving downward and outward with threads formed on an inner surface at a cylindrical lower end. Sealing elements include an annular sealing flange extending downward and inward from the end wall and having an outer sealing surface which seals against the inner surface of the flared portion of the container. An upper portion of the inner surface of the skirt formed by an annular rib extends downwardly and outwardly from the end wall to form an upwardly converging gap into which the flared portion is wedged as the closure is applied to the container.