A socket unit for a capillary connection system, especially for use in HPLC applications, includes a housing with a housing outer surface and a housing inner surface that define a housing axial cavity. The socket unit also includes a socket connecting mechanism adapted to engage with a corresponding plug connecting mechanism of a plug unit to connect the plug unit and the socket unit together, wherein the socket connecting mechanism is adapted for a predetermined number of discrete connection states between the socket unit and the plug unit.

Segmental duct coupler devices, systems, and methods are provided herein. A duct coupler device can include a single, discrete body of material for welding to a duct segment. A system, including a duct segment having a duct coupler device welded thereto, is provided. The connection or points of connection between the duct coupler device and the duct segment in the system are devoid of internal and/or external seals. The duct coupler device and system can be cast in concrete. Multiple concrete segments can be assembled together to form a bridge, a roadway, a building, a slab, or any other structure.

A quick-seal connecting component includes a first sealing ring, an expansion pipe and pipe joint with front and rear running through; the joint is assembled to a pipe in sealing engagement by the first sealing ring and the expansion pipe. The expansion pipe is sleeved on the outer wall of the pipe type joint. The first sealing ring is sleeved on the outer wall of the expansion pipe. The pipe type joint of the connecting component is assembled to the toilet pipe by the first sealing ring, the expansion pipe and the second sealing ring.

A quick-seal connecting component includes a first sealing ring, an expansion pipe and pipe joint with front and rear running through; the joint is assembled to a pipe in sealing engagement by the first sealing ring and the expansion pipe. The expansion pipe is sleeved on the outer wall of the pipe type joint. The first sealing ring is sleeved on the outer wall of the expansion pipe. The pipe type joint of the connecting component is assembled to the toilet pipe by the first sealing ring, the expansion pipe and the second sealing ring.

A clamp comprising a band, the band comprising first and second edges and a gap there between, first and second lug elements extending from the band on opposite sides of the gap, multiple bolts configured to extend transversely from bolt receiving openings in the first lug element to bolt receiving openings in the second lug element, at least one of the multiple bolts having a bolt retainer on the bolt configured such that the bolt retainer does not pass through the openings in the second lug element, and the bolt retainer positioned on the bolt on an inner side of the opening in the second lug element and closer to a second end portion of the bolt outside the second lug element than a first end portion of the bolt outside the first lug element.

A clamp comprising a band, the band comprising first and second edges and a gap there between, first and second lug elements extending from the band on opposite sides of the gap, multiple bolts configured to extend transversely from bolt receiving openings in the first lug element to bolt receiving openings in the second lug element, at least one of the multiple bolts having a bolt retainer on the bolt configured such that the bolt retainer does not pass through the openings in the second lug element, and the bolt retainer positioned on the bolt on an inner side of the opening in the second lug element and closer to a second end portion of the bolt outside the second lug element than a first end portion of the bolt outside the first lug element.

A flow path joint, which connects a first flow path inside a tubular body to a second flow path inside a flow path member, includes an elastic member that is able to elastically change shape, and a support body that supports the elastic member, in which the elastic member includes a press fitting portion which is a tubular shape part that is linked to the second flow path and into which the tubular body is press fitted, and a sealing portion that is interposed between the support body and the flow path member.

A flow path joint, which connects a first flow path inside a tubular body to a second flow path inside a flow path member, includes an elastic member that is able to elastically change shape, and a support body that supports the elastic member, in which the elastic member includes a press fitting portion which is a tubular shape part that is linked to the second flow path and into which the tubular body is press fitted, and a sealing portion that is interposed between the support body and the flow path member.

A fitting for a pipe has a cylindrical sleeve and a spigot fitted concentrically within the sleeve. The sleeve is slidable along the spigot in a proximal direction. The sleeve has a gripper ring cavity with a conical bearing surface with a diameter that is smaller at the distal end and a larger at the proximal end. One or more gripper rings fit within the cavity and slidingly engage the bearing surface. The spigot has an outer surface sized to fit within a proximal end of the pipe. The inner surface of the gripper rings and the outer surface of the spigot define an annular space with a first radial width sized to accept insertion of the proximal end of the pipe. When the sleeve is moved with respect to the spigot in the proximal direction toward a sealed position, the rings are inwardly compressed by the bearing surface to grip an outer surface of the pipe. The end of the pipe is drawn into a space between the sleeve and the spigot with radial width smaller than the first radial width.

A fitting for a pipe has a cylindrical sleeve and a spigot fitted concentrically within the sleeve. The sleeve is slidable along the spigot in a proximal direction. The sleeve has a gripper ring cavity with a conical bearing surface with a diameter that is smaller at the distal end and a larger at the proximal end. One or more gripper rings fit within the cavity and slidingly engage the bearing surface. The spigot has an outer surface sized to fit within a proximal end of the pipe. The inner surface of the gripper rings and the outer surface of the spigot define an annular space with a first radial width sized to accept insertion of the proximal end of the pipe. When the sleeve is moved with respect to the spigot in the proximal direction toward a sealed position, the rings are inwardly compressed by the bearing surface to grip an outer surface of the pipe. The end of the pipe is drawn into a space between the sleeve and the spigot with radial width smaller than the first radial width.