Abstract: The present application pertains to a braided dual-sided compression packing seal, methods for producing and using such a seal, and apparatuses suitable for producing such a seal. The braided dual-sided compression packing seal is made up of two or more different materials that are braided together in such a way that, in cross-section, the compression packing seal has an asymmetrical configuration relative to a first axis that is substantially perpendicular to the longitudinal axis and is substantially perpendicular to a side of the compression packing seal. Accordingly, when viewed in a cross-sectional plane, the compression packing seal may expose substantially only a first material along a first side of the seal, and substantially only a second material along a second side of the seal.

Abstract: The present application pertains to a braided dual-sided compression packing seal, methods for producing and using such a seal, and apparatuses suitable for producing such a seal. The braided dual-sided compression packing seal is made up of two or more different materials that are braided together in such a way that, in cross-section, the compression packing seal has an asymmetrical configuration relative to a first axis that is substantially perpendicular to the longitudinal axis and is substantially perpendicular to a side of the compression packing seal. Accordingly, when viewed in a cross-sectional plane, the compression packing seal may expose substantially only a first material along a first side of the seal, and substantially only a second material along a second side of the seal.

Abstract: The present application pertains to a braided dual-sided compression packing seal, methods for producing and using such a seal, and apparatuses suitable for producing such a seal. The braided dual-sided compression packing seal is made up of two or more different materials that are braided together in such a way that, in cross-section, the compression packing seal has an asymmetrical configuration relative to a first axis that is substantially perpendicular to the longitudinal axis and is substantially perpendicular to a side of the compression packing seal. Accordingly, when viewed in a cross-sectional plane, the compression packing seal may expose substantially only a first material along a first side of the seal, and substantially only a second material along a second side of the seal.

Abstract: A split mechanical seal for mounting to a housing containing a rotating shaft comprising a gland assembly configured for mounting to the housing and forming a chamber, where the gland assembly includes a top surface having a gland groove formed thereon. The gland groove is formed at least in part by at least one raised wall portion that extends axially outwardly from the top surface. The seal also includes a stationary seal ring having a groove or recess formed in an inner surface.

Abstract: The present application pertains to a compression packing seal including a braided dual-sided jacket, methods for producing and using such a seal, and apparatuses suitable for producing such a seal. The compression packing seal is made up of a core and a jacket braided round the core. The jacket may include two or more different materials that are braided together in such a way that, in cross-section, the jacket has an asymmetrical configuration relative to a first axis that is substantially perpendicular to the longitudinal axis and is substantially perpendicular to a side of the jacket. Accordingly, when viewed in a cross-sectional plane, the jacket may expose substantially only a first material along a first side, and substantially only a second material along a second side.

Abstract: A split mechanical seal for mounting to a housing containing a rotating shaft comprising a gland assembly configured for mounting to the housing and forming a chamber, where the gland assembly includes a top surface having a gland groove formed thereon. The gland groove is formed at least in part by at least one raised wall portion that extends axially outwardly from the top surface. The seal also includes a stationary seal ring having a groove or recess formed in an inner surface.

Abstract: The present application pertains to a compression packing seal including a braided dual-sided jacket, methods for producing and using such a seal, and apparatuses suitable for producing such a seal. The compression packing seal is made up of a core and a jacket braided round the core. The jacket may include two or more different materials that are braided together in such a way that, in cross-section, the jacket has an asymmetrical configuration relative to a first axis that is substantially perpendicular to the longitudinal axis and is substantially perpendicular to a side of the jacket. Accordingly, when viewed in a cross-sectional plane, the jacket may expose substantially only a first material along a first side, and substantially only a second material along a second side.

Abstract: A split mechanical composite seal assembly for providing a seal between a rotating shaft and a static surface. The split mechanical composite seal assembly includes first and second axially adjacent annular seal elements. The first and second seal elements each include a sealing edge contacting the shaft to provide a respective seal between the first and second seal element and the shaft. A static housing receives the first and second seal elements and engages the static surface to provide a static stationary seal, while concomitantly providing a flex region that engages the seal elements to form a dynamic seal therewith. A holder assembly receives one seal element and may include a double-angled lead-in to facilitate installation of the seal element. The holder assembly may include a detent groove for receiving and retaining an O-ring disposed about the seal element. The static housing may comprise two mating segments having overlapping surfaces.

Abstract: A mechanical seal for providing a fluid-tight seal between a rotating shaft and a stationary housing comprises a first pair of seal members for sealing and separating a process fluid from a barrier fluid and a shuttle. The first pair of seal members comprises a first rotatable seal ring having a rotary seal face and a first stationary seal ring having a stationary seal face engaging the rotary seal face. The shuttle member is positioned relative to the rotary seal ring or the stationary seal ring and axially movable between a first position and a second position in response to changing pressure conditions within the mechanical seal thereby maintaining the mechanical seal regardless of the change in pressure conditions.

Abstract: A split mechanical composite seal assembly for providing a seal between a rotating shaft and a static surface. The split mechanical composite seal assembly includes first and second axially adjacent annular seal elements. The first and second seal elements each include a sealing edge contacting the shaft to provide a respective seal between the first and second seal element and the shaft. A static housing receives the first and second seal elements and engages the static surface to provide a static stationary seal, while concomitantly providing a flex region that engages the seal elements to form a dynamic seal therewith. A holder assembly receives one seal element and may include a double-angled lead-in to facilitate installation of the seal element. The holder assembly may include a detent groove for receiving and retaining an O-ring disposed about the seal element. The static housing may comprise two mating segments having overlapping surfaces.

Abstract: A mechanical seal having a single rotatable seal ring having a pair of concentric seal faces to form a radially inner seal face and a radially outer seal face. The mechanical seal also includes first and second stationary seal rings, each having a seal face, where the seal face of the first stationary seal ring contacts the radially outer seal face of the rotatable seal ring and the seal face of the second stationary seal ring contacts the radially inner seal face of the rotatable seal ring. The seal also includes a sleeve adapted to be mounted about the rotating shaft and rotatably coupled thereto and to the rotatable seal ring, said sleeve having a flange portion that is configured for housing at least a portion of the rotatable seal ring, and a gland for housing at least partially the single rotary seal ring and the first and second stationary seal rings.

Abstract: A spacing mechanism is provided for locating at least one rotatable component relative to a stationary component of a mechanical seal. The spacing mechanism is configured to automatically disengage from the rotatable seal component, and/or its associated hardware, upon rotation of the rotatable seal component. The spacing mechanism may be configured to axially and/or radially locate one or more rotatable components relative to one or more stationary components and may be configured to automatically disengage from the rotatable seal component by the rotation of the rotatable seal component.

Abstract: A mechanical seal having a single rotatable seal ring having a pair of concentric seal faces to form a radially inner seal face and a radially outer seal face. The mechanical seal also includes first and second stationary seal rings, each having a seal face, where the seal face of the first stationary seal ring contacts the radially outer seal face of the rotatable seal ring and the seal face of the second stationary seal ring contacts the radially inner seal face of the rotatable seal ring. The seal also includes a sleeve adapted to be mounted about the rotating shaft and rotatably coupled thereto and to the rotatable seal ring, said sleeve having a flange portion that is configured for housing at least a portion of the rotatable seal ring, and a gland for housing at least partially the single rotary seal ring and the first and second stationary seal rings.

Abstract: A mechanical seal for providing a fluid-tight seal between a rotating shaft and a stationary housing comprises a first pair of seal members for sealing and separating a process fluid from a barrier fluid. The first pair of seal members comprises a first rotatable seal ring having a rotary seal face and a first stationary seal ring having a stationary seal face engaging the rotary seal face. The first pair of seal members further includes generally radially extending piston areas on the rear sides of the primary seal members for biasing seal faces together. The piston areas are defined by a movable shuttle member that is connected to the rotary seal ring and a sleeve, which is in turn connected to the rotating shaft. Under normal operating conditions, the shuttle is moved to a first position to allow the process fluid to exert a force on a first piston area to bias the seal faces together.

Abstract: A spacing mechanism is provided for locating at least one rotatable component relative to a stationary component of a mechanical seal. The spacing mechanism is configured to automatically disengage from the rotatable seal component, and/or its associated hardware, upon rotation of the rotatable seal component. The spacing mechanism may be configured to axially and/or radially locate one or more rotatable components relative to one or more stationary components and may be configured to automatically disengage from the rotatable seal component by the rotation of the rotatable seal component.

Abstract: A mechanical seal for mounting to a stationary housing that contains a rotating shaft is provided. The mechanical seal employs an inboard mounted spacer element to provide axial and radial spacing between a holder and a gland. In addition to providing selected axial and radial spacing, the spacer element promotes or enhances fluid circulation in a process chamber formed between the gland and holder by rotating about the shaft.

Abstract: A split mechanical face seal that provides fluid sealing between a housing and a rotating shaft includes first and second seal rings each having at least two seal ring segments and a radially extending seal face. The seal ring faces of the seal rings are opposed to one another. One of the seal rings is connected to the rotating shaft to rotate therewith, while the other seal ring is connected to the housing. The split seal also includes a continuous, circumferential groove formed in the seal face of the first seal ring for introducing a fluid to the seal faces of the first and second seal rings to establish a seal therebetween. A split support member having at least two support segments for coupling the first seal ring to the housing or the rotating shaft is also provided. The split face seal is operable as both a contacting and a non-contacting mechanical face seal.

Abstract: A split mechanical face seal that provides fluid sealing between a housing and a rotating shaft includes first and second seal rings each having at least two seal ring segments and a radially extending seal face. The seal ring faces of the seal rings are opposed to one another. One of the seal rings is connected to the rotating shaft to rotate therewith, while the other seal ring is connected to the housing. The split seal also includes a continuous, circumferential groove formed in the seal face of the first seal ring for introducing a fluid to the seal faces of the first and second seal rings to establish a seal therebetween. A split support member having at least two support segments for coupling the first seal ring to the housing or the rotating shaft is also provided. The split face seal is operable as both a contacting and a non-contacting mechanical face seal.

Abstract: A mechanical seal for mounting to a stationary housing that contains a rotating shaft is provided. The mechanical seal employs an inboard mounted spacer element to provide axial and radial spacing between a holder and a gland. In addition to providing selected axial and radial spacing, the spacer element promotes or enhances fluid circulation in a process chamber formed between the gland and holder by rotating about the shaft.

Abstract: A mechanical seal for providing fluid sealing between a housing and a rotatable shaft includes a first seal ring having a first seal face and a second seal ring having a second seal face. The first seal face further has a first portion and a second portion and the seal faces of the first and second seal rings are opposed to each other when assembled. The first seal ring or the second seal ring is adapted to rotate with the rotatable shaft, and the other seal ring is restrained from rotating. The seal faces are configured to produce a primarily hydrostatic fluid force between at least a portion of the first portion of the first seal face and at least a portion of the second seal face. In addition, the seal faces are configured to produce a hydrodynamic fluid force and a hydrostatic fluid force between at least a portion of the second portion of the first seal face and at least a portion of the second seal face.