Example aspects of a harness for a hydrant shoe assembly and a method for assembling a hydrant shoe assembly are disclosed. The harness for a hydrant shoe assembly can comprise an arcuate spine, the spine defining a first end, a second end, and a middle region therebetween, the spine defining an inner surface and an outer surface, the spine comprising a first protuberance extending from the outer surface and a first rib extending from the inner surface; a first fastener lug extending from the first end of the spine; and a second fastener lug extending from the second end of the spine.

An annular sealing material seals a pipe joint between a socket and a spigot. The sealing material includes a bulb part which is composed of a first bulb, a second bulb located closer to the inner side of the socket than the first bulb, and a narrow part present between the first and second bulbs. The first bulb is pressed against the inner circumferential surface of the socket. The second bulb is pressed against the outer peripheral surface of the spigot. The second bulb is inclined towards the pipe center from the first bulb in a natural state before it is provided between the socket and the spigot. The inner diameter of the second bulb is smaller than the outer diameter of the spigot in the natural state. The second bulb is extensible in the pipe diameter direction due to elastic deformation of the narrow part.

A female undersea hydraulic coupling member is equipped with a plurality of pressure-energized metal seals configured to seal between the body of the female member and the probe of a corresponding male hydraulic coupling member in response to ambient hydrostatic pressure and/or hydraulic fluid pressure. Pressure-energized metal seals may also be provided to seal between the body of the female coupling member and a removable seal retainer or seal cartridge. In one particular preferred embodiment, the pressure-energized seals are back-to-back metal C-seals separated by annular seal supports having a generally T-shaped cross section and retained on one or more shoulders in the body of the female member by a removable seal cartridge.

A female undersea hydraulic coupling member is equipped with a plurality of pressure-energized metal seals configured to seal between the body of the female member and the probe of a corresponding male hydraulic coupling member in response to ambient hydrostatic pressure and/or hydraulic fluid pressure. Pressure-energized metal seals may also be provided to seal between the body of the female coupling member and a removable seal retainer or seal cartridge. In one particular preferred embodiment, the pressure-energized seals are back-to-back metal C-seals separated by annular seal supports having a generally T-shaped cross section and retained on one or more shoulders in the body of the female member by a removable seal cartridge.

A probe seal for a female hydraulic coupling member has both internal and external pressure-energized seals. The outer wall or opposing ends of the seal have one or more pressure-energized seals for sealing between the body of the probe seal and the body of a coupling member in which the probe seal is installed. Annular, L-shaped, T-shaped or angled grooves in the inner wall of the seal form cavities and sealing projections that can be urged in an inward, radial direction by fluid pressure within an associated cavity to increase the sealing effectiveness between the body of the seal and the probe of a male hydraulic coupling member inserted in the receiving chamber of the female coupling member.

Pipe joints and more particularly circular push-on type pipe joints including a flexible gasket having both hard and soft sections and where the hard section has a chamfered outer edge and a C-shaped grooved portion on a side opposite of the chamfered outer edge in which a portion of the soft section fills and is connected to and the soft section is configured to partially overlap a flange on an interior surface of a pipe bell end.

Pipe joints and more particularly circular push-on type pipe joints including a flexible gasket having both hard and soft sections and where the hard section has a chamfered outer edge and a C-shaped grooved portion on a side opposite of the chamfered outer edge in which a portion of the soft section fills and is connected to and the soft section is configured to partially overlap a flange on an interior surface of a pipe bell end.

Pipe joints and more particularly circular push-on type pipe joints including a flexible gasket having both hard and soft sections and where the hard section has a chamfered outer edge and a C-shaped grooved portion on a side opposite of the chamfered outer edge in which a portion of the soft section fills and is connected to and the soft section is configured to partially overlap a flange on an interior surface of a pipe bell end.

Pipe joints and more particularly circular push-on type pipe joints including a flexible gasket having both hard and soft sections and where the hard section has a chamfered outer edge and a C-shaped grooved portion on a side opposite of the chamfered outer edge in which a portion of the soft section fills and is connected to and the soft section is configured to partially overlap a flange on an interior surface of a pipe bell end.

A piping element assembly includes a coupling body and at least one gasket, the coupling body defining an interior cavity, the interior cavity in contact with the at least one gasket, the piping element assembly adapted for sealably connecting two lengths of pipe by insertion of the pipe lengths within the interior cavity and sealed by the at least one gasket.