Abstract: A dispenser assembly for liquid products is disclosed. Such a dispenser assembly may include an elongated barrel, and an elongated plunger positioned therein with the elongated plunger having a flexible sealing lip disposed at an end thereof. The sealing lip may have a beaded portion providing for easier movement of the plunger within the barrel while creating an effective seal between the plunger and the barrel. In an embodiment, the cross-section of the beaded portion is oval and the thickness of the flexible sealing lip tapers inwardly towards it distal end. The flexible sealing lip may be curved in the shape of an arc of a circle.

Abstract: A moisture-tight safety closure and a container wherein a depending, circumferentially extending sealing lip on the closure engages a flexible wall portion on the neck of the container. A plurality of circumferentially extending lugs on the closure cooperate with a plurality of circumferentially spaced hooks on the container neck for releasably securing the closure to the container.