A permanently lubricated film gasket for providing a fluid-tight seal between a corrugated pipe and a smooth annular section of an outer pipe or section when the corrugated pipe and the outer pipe or section are in a relative surrounded and surrounding relationship. A first portion of the gasket is shaped to fit within a groove or recess of the corrugated pipe. A second portion of the gasket extends from the first portion. The second portion is at least partially comprised of permanently lubricated film for facilitating in the connection of the pipes along a single direction.

A pipe joint structure has a joint body, a fixed ring and a union nut. A flared end of a tube has a conical surface and a tubular surface. The conical surface and tubular surface are connected to a tube connecting portion of the joint body. The union nut is fastened to a locking thread of the tube connecting portion. An interior recess portion of the union nut is coupled with a bulging surface of the fixed ring. The tube is compressed evenly and secured firmly on the joint body.

A seawater suction system (10) is provided comprising first and second conduits (12, 14) connected to one another so as to form an internal fluid passage allowing fluid communication between the two conduits (12, 14), wherein the first conduit (12) is formed from at least two layers of a first material and the second conduit (14) is formed from a single layer of a second material which is different from the first material.

A coupling is disclosed providing fluidic continuity between first and second orifices of two portions of an air circuit which includes a flexible sleeve, a first frame connected in fluid-tight manner to a first end of the flexible sleeve and having a first opening, and a second frame, connected in fluid-tight manner to a second end of the flexible sleeve and having a second opening. The coupling is deformable so that the flexible sleeve may adapt to the variable spacing between two avionics racks and is able to compensate for a misalignment between the orifices of two portions of an air circuit.

A coupling system provides a media-conducting connection of two hose-shaped sections (10, 12). Each section has one coupling element (16, 18), with two coupling parts (20, 22) that can be separated from each other and that are detachably held to each other by closure elements (24) along a disconnecting point (26). The closure parts of one coupling element can be engaged with correspondingly designed closure elements (24) of the other coupling element (20, 22) to form the transport section. All closure elements (24) of the coupling parts (20, 22) point hose-inward, at least before forming the transport section. Upon producing the transport section, the respective disconnecting point (26) is arranged between the coupling elements (16, 18), transversely to the transport section.

A coupling system provides a media-conducting connection of two hose-shaped sections (10, 12). Each section has one coupling element (16, 18), with two coupling parts (20, 22) that can be separated from each other and that are detachably held to each other by closure elements (24) along a disconnecting point (26). The closure parts of one coupling element can be engaged with correspondingly designed closure elements (24) of the other coupling element (20, 22) to form the transport section. All closure elements (24) of the coupling parts (20, 22) point hose-inward, at least before forming the transport section. Upon producing the transport section, the respective disconnecting point (26) is arranged between the coupling elements (16, 18), transversely to the transport section.

A threaded connection including first and second tubular components, each including a respective male and female end, the male end includes at least one threaded zone on its external peripheral surface and ending in a terminal surface, the female end includes at least one threaded zone on its internal peripheral surface and ending in a terminal surface, the threaded zones including, over at least a portion of their length, threads each including, viewed in longitudinal section passing through the axis of the tubular component, a thread crest, a thread root, a load flank, and a stabbing flank. Profiles of the male and female load flanks, viewed in longitudinal section passing through the axis of revolution of the connection, are a continuous curve with a convex or concave form, the profile of the male flanks being complementary to that of the female flanks over at least 70% of the continuous curve.

A preassembled line for axial engagement with a mating coupling part. The preassembled line includes a line connector having of a connector body with a connecting portion to which a media line is connected and also includes a coupling portion with sealing means for sealing relative to the mating coupling part. The media line is provided with a heating wire arranged on the coupling portion. The connector body, the media line and the heating wire being surrounded at one end by a housing that has a latching part for connecting with the mating coupling part. The latching part is formed on the housing portion surrounding the coupling portion. Sealing of the preassembled media line to the mating coupling part is separated from connecting of the preassembled media line to the mating coupling part and separately performed by the connector body and the housing.

A connector element is disclosed in accordance with one embodiment of the present disclosure. The connector element is for coupling a first tubular element to a second tubular element, wherein the second tubular element is having an end configuration selected from a threaded end configuration and a non-threaded plain configuration. The connector element is having a threaded element complementary to the threads of the threaded end configuration of the second tubular element, a tube lock that is co-axially arranged with respect to and disposed downstream of the threaded element for holding the second tubular element, and a guide element that is co-axially arranged with respect to and disposed down-stream of the tube lock for guiding the second tubular element.

A coupler assembly kit and methods of use are described. Embodiments of the coupler assembly kit can be implemented to couple a corrugated pipe to a concrete section. Generally, the assembly kit can be implemented to couple a spigot end of the corrugated pipe to a bell end of the concrete section. In one embodiment, the coupler assembly kit can include a circumferential cable, a plurality of second cables having a threaded rod on end and an eye bolt on the other end, a plurality of linkage crosses, and a gasket. The coupler assembly kit can be assembled and implemented on location to connect a high-density polyethylene corrugated pipe to a reinforced-concrete flared end section.