Positive seal spout

摘要

A self-sealing spout for a caulking cartridge or the like wherein the discharge tube of the spout extends through a central aperture in an end panel of the cartridge. The spout includes an enlarged annular base integral with the inner end of the discharge tube and engageable with the inner surface of the end panel about the central tube-receiving aperture. The base includes a flexible sealing lip defined peripherally thereabout by an annular groove, said sealing lip being retained in flexed sealed engagement with an annular inclined wall defined in the end panel. The spout is secured to the end panel by a locking of the flanged periphery of the end panel aperture within a peripheral groove about the discharge tube immediately outward of the base.