Abstract: A triple sealing outlet for use in plastic containers comprises a first cylindrical surface, preferably threaded, extending from an outer wall of the container; a flat, annular surface perpendicular to the first surface and lying within the wall; and a second cylindrical surface of smaller diameter, parallel to the first surface and perpendicular to the flat annular surface, extending from an inner collar which is part of the inner wall of the container. These three surfaces are adapted to engage and mate with three corresponding surfaces of a connector, or of an appropriately designed valve, to provide fluid tight seals.

Abstract: An improved rotationally molded salvage drum and double-walled reinforced recessed lid is sealed and secured with a conventional ring clamp, and is provided with vertical column ribs projecting outward from generally cylindrical sidewalls; in a preferred embodiment the diameter of the lower section is smaller than that of the upper section to permit nesting of the empty stacked drums.