Abstract: A tube closure of elastomeric material having specific properties has an open end, a closed end and a side wall defining a tapering outer frustoconical surface. The side wall has a predetermined thickness at its thinnest point, which is determined in connection with the angle of taper of the outer frustoconical surface and the properties of the elastomeric material to provide a seal with high integrity over a range of tube sizes. The closure has a radially extending flange of predetermined thickness by which the closure can be removed from a tube by a pushing force. The closure has an inner surface for sealing against an outer surface of other tubes.

Abstract: The disclosed apparatus is a dispensing device which includes a filter member, a cap member having seating means within same for temporarily retaining the filter member within the cap, and a container having a neck portion defining a mouth or opening, the neck portion being adapted to receive the cap member and to retain the filter member within its mouth upon removal of the cap.