Abstract: There is provided, for a container having a cylindrical outlet (2), a one-piece deformable dispensing closure (10) in the form of a cap including an end wall (12) having a depending peripheral skirt (14) for securing it to outlet (2). End wall (12) includes scoreline (56) which defines a segment intersecting a portion of end wall (12). A complex seal (32), sized for insertion into container outlet (2), depends from the inner surface of end wall (12). The seal also includes tapered external lip (34) for forming a releasable seal with internal surface (6) of container outlet (2). There is a dispensing opening (22) through end wall (12).

Abstract: There is provided, for a container having a cylindrical outlet, a one-piece deformable dispensing closure in the form of a cap including a circular end wall having a depending peripheral skirt for securing it to the outlet. The end wall includes a scoreline which defines a segment intersecting a portion of the end wall. A complex hollow seal, positioned and sized for insertion into the container outlet, depends from the inner surface of the end wall. The seal also includes a tapered external lip for forming a partially releasable seal with the internal surface of the container outlet. There is a dispensing opening through the end wall. When inward pressure is exerted on the outer surface of the end wall a portion of the end wall within the scoreline is moved inwardly, moving with it a portion of the seal and tapered lip which is in registration therewith.