A method of using a mechanical joint restraint includes inserting an end of a pipe length into a gland bore of a gland, a ring bore of a gripping ring, and a gasket bore of a gasket, the gland, the gripping ring, and the gasket together forming the mechanical joint restraint; inserting at least a portion of the gasket of the mechanical joint restraint into a socket of a piping element; inserting the end of the pipe length into the socket of the piping element; and drawing the gland towards a flange of the piping element to compress the gasket into sealing engagement with the piping element and the pipe length.

A mechanical joint according to which a gasket includes wipers, or protrusions, on an internal surface of the gasket, on an external surface of the gasket, or on both internal and external surfaces of the gasket.

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.

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.

A pipe adapter includes a first tubular element having a first portion and a second portion axially adjacent the first portion defining a socket. A second tubular element has a first portion and a second portion axially adjacent the first portion, the first portion defining a distal end sized for insertion into the socket and having a radially extending stop. An annular sealing member is located between the first portion of the second tubular element and the second portion of the first tubular element and provides an axial seal therebetween. An annular securing member is rotatably disposed around the first portion of the second tubular element and located within and fixed to the socket. The annular securing member contacts the stop to secure the second tubular element axially relative to the first tubular element while also allowing the second tubular element to rotate relative to the first tubular element and annular securing member.

A pipe adapter includes a first tubular element, a second tubular element, and an annular securing member disposed around and fixed to a second portion of the first tubular element. The annular securing member has a flange portion that contacts and secures the second tubular element axially relative to the first tubular element while also allowing the second tubular element to rotate relative to the first tubular element and the annular securing member. An annular sealing member is located around the first portion of the second tubular element to provide an axial seal along the adapter.

A pipe adapter includes a first tubular element, a second tubular element, and an annular securing member disposed around and fixed to a second portion of the first tubular element. The annular securing member has a flange portion that contacts and secures the second tubular element axially relative to the first tubular element while also allowing the second tubular element to rotate relative to the first tubular element and the annular securing member. An annular sealing member is located around the first portion of the second tubular element to provide an axial seal along the adapter.

A seal includes a first elastomeric ring and a second elastomeric ring. The first elastomeric ring has an annular cavity, and the second elastomeric ring is in the annular cavity. In another embodiment, a seal includes a first elastomeric element and a second elastomeric element. The first elastomeric element has a length extending along an axis, a first surface facing radially outward with respect to the axis, and a second surface facing radially inward with respect to the axis. The second surface defines a cavity extending along the axis. The second elastomeric element is in the cavity and has a first surface facing radially outward with respect to the axis.

A method for using a gland assembly includes sliding a gland assembly over an end of a pipe, the pipe defining an outer surface, the gland assembly comprising a gland, a joint restraint assembly, and a gasket, the joint restraint assembly comprising a gripper and a spring, the spring configured to engage the gripper and the gasket; inserting the end of the pipe into a socket of a piping element; fastening the gland to the piping element; disabling a deactivation mechanism of the joint restraint assembly; and engaging the joint restraint assembly with the outer surface of the pipe to prevent removal of the pipe from the piping element.

A method for using a gland assembly includes sliding a gland assembly over an end of a pipe, the pipe defining an outer surface, the gland assembly comprising a gland, a joint restraint assembly, and a gasket, the joint restraint assembly comprising a gripper and a spring, the spring configured to engage the gripper and the gasket; inserting the end of the pipe into a socket of a piping element; fastening the gland to the piping element; disabling a deactivation mechanism of the joint restraint assembly; and engaging the joint restraint assembly with the outer surface of the pipe to prevent removal of the pipe from the piping element.