A crimp fitting has a monolithic and homogeneous female socket configured to receive and be crimped to an end portion of a tube. The socket comprises an annular wall and an axial opening. The annular wall comprises at least one internal shoulder that protrudes radially inward from the annular wall. A seal ring in the female socket has a C-shaped cross section and is configured to be arranged around the end portion of the tube to be joined with the fitting. The C-shaped seal ring compresses against the internal shoulder after the fitting is crimped with the tube with the C-shaped seal ring arranged around the end of the tube.

An outer component has an opening therein defining an outer component mating wall, and a collar is configured to be inserted into the opening in the outer component. The collar has a collar mating wall with an outer surface and including a number of protrusions. A recess can surround each protrusion so that an overall protrusion height between a base of the protrusion and a distal end thereof is greater than a protruding distance between an outermost portion of the outer surface of the collar mating wall and the distal end of the protrusion. The configuration of the protrusions, including the number thereof, can be designed to provide a press-fit insertion force of 50 Newtons or less, and to provide a friction retention force sufficient to retain the collar within the opening of the outer component under its own weight, throughout relevant tolerance ranges for the mating walls.

An outer component has an opening therein defining an outer component mating wall, and a collar is configured to be inserted into the opening in the outer component. The collar has a collar mating wall with an outer surface and including a number of protrusions. A recess can surround each protrusion so that an overall protrusion height between a base of the protrusion and a distal end thereof is greater than a protruding distance between an outermost portion of the outer surface of the collar mating wall and the distal end of the protrusion. The configuration of the protrusions, including the number thereof, can be designed to provide a press-fit insertion force of 50 Newtons or less, and to provide a friction retention force sufficient to retain the collar within the opening of the outer component under its own weight, throughout relevant tolerance ranges for the mating walls.

An outer component and an annular collar can be formed of materials having a Rockwell R hardness of at least 120. The outer component can have a recess, including an outer component mating wall. The annular collar can include an annular collar mating wall, including at least three protrusions. A recess can surround each protrusion so that an overall protrusion height between a base of the protrusion and a distal end thereof is greater than a protruding distance between an outer diameter of a cylindrical outer surface of the annular collar mating wall and the distal end of the protrusion. The number and configuration of the protrusions can be designed to provide a press-fit insertion force of 50 Newtons or less, and to provide a friction retention force sufficient to retain the annular collar within the recess under its own weight, throughout relevant tolerance ranges for the mating walls.

An outer component and an annular collar can be formed of materials having a Rockwell R hardness of at least 120. The outer component can have a recess, including an outer component mating wall. The annular collar can include an annular collar mating wall, including at least three protrusions. A recess can surround each protrusion so that an overall protrusion height between a base of the protrusion and a distal end thereof is greater than a protruding distance between an outer diameter of a cylindrical outer surface of the annular collar mating wall and the distal end of the protrusion. The number and configuration of the protrusions can be designed to provide a press-fit insertion force of 50 Newtons or less, and to provide a friction retention force sufficient to retain the annular collar within the recess under its own weight, throughout relevant tolerance ranges for the mating walls.

A method for manufacturing a pipe conduit arrangement including sticking a pipe stub onto a pipe conduit at least up to the flush state of the of the flange section end-face and the nips conduit end-face, fixing the pipe conduit in the pipe stub in a press fit which is produced by the radial widening of the pipe conduit, and axially clamping the arisen pipe conduit units by way of clamping the flange sections of the pine stubs into the nine conduit arrangement. Also described is a pipe conduit arrangement.

Techniques for implementing and/or operating a system that includes a pipe fitting and a swage machine. The swage machine includes a grab plate having a grab tab that matingly interlocks with a grab notch on the pipe fitting to facilitate securing the swage machine to the pipe fitting and a die plate having a die seat that enables a set of die segments to be used to conformally deform the pipe fitting around the tubing of the pipe segment to be loaded in the swage machine. The die plate and the grab plate include a base plate section, a hinge plate secured to the base plate section via a hinge fastener such that the hinge plate directly abuts the base plate section, and a pivotable plate section secured to the hinge plate via a hinge fastener such that the hinge plate directly abuts the pivotable plate section.

A pipe press-fit connecting apparatus includes a connecting device. The connecting device may be used to connect a connected unit to a pressing power providing unit. The connecting device includes a fastener and a coupling pin. The fastener is installed at one end of the installation hole on an exterior surface of a cylinder block and has a fastening pin configured to be resiliently arranged and at least partially be exposed to the installation hole. The coupling pin is inserted through the installation hole and the insertion hole through another end of the installation hole on the exterior surface of the cylinder block to be resiliently coupled to the fastening pin to couple the connected unit to the pressing power providing unit.

A profiled leak-before-press sealing ring includes a plurality of arc-shaped first and linear-shaped second type ring portions that lie alternating around a center axis. The second type ring portions extend linear-shaped with straight inner and outer surfaces in a tangential direction. The first type ring portions have curved inner and outer surfaces of constant radii around the center axis. The ring further includes a plurality of third type ring portions that extend arc-shaped in between respective ones of the arc-shaped first and linear-shaped second type ring portions, and that each connect with its head ends to head ends of neighbouring ones of the first and second type ring portions. The arc-shaped first, the linear-shaped second, and the arc-shaped third type ring portions all have a same evenly large dimensioned cross-sectional shape.

A crimping tool for crimping a metallic crimp ring. The crimping tool includes a first crimp die having a first curved contact surface and a second curved contact surface, the second curved contact surface spaced apart from the first curved contact surface, and a trench extending between the first curved contact surface and the second curved contact surface. The crimping tool also includes a second crimp die cooperatively engageable with the first crimp die having a first curved contact surface and a second curved contact surface, the second curved contact surface spaced apart from the first curved contact surface, and a trench extending between the first curved contact surface and the second curved contact surface. The trench of the first crimp die and the trench of the second crimp die forms an annular bead in a center portion of the metallic crimp ring.