Abstract: A mechanical seal includes an elastomeric member, a spring biasing device, a longitudinally floating first member, a longitudinally non-floating second member and a longitudinally floating seal face. The elastomeric member is in a sealing engagement with the seal face. The first and second members and the spring biasing device are longitudinally positioned between the seal face and the second member. The first member and the second member are longitudinally restrained and rotationally coupled by at least one substantially male radially protruding portion in one of the members engaging in at least one substantially female portion in the other member of the two members. The first and second members are arranged for a sealing engagement with the seal face in a single seal utilizing the elastomeric member, or with the seal face and an additional seal face in a double seal utilizing an additional elastomeric member.

Abstract: A seal support system for a device for sealing an item of rotating equipment, including a device for generating air movement, includes a vessel for holding fluid for supplying to the sealing device. The system further includes an adjustable stand on which the vessel is mounted and a device for deflecting air along a path into which the vessel can be positioned.

Abstract: An isolator seal includes a stator member for placement into the stator of rotating equipment and a rotor member for placement onto a rotary shaft of the rotating equipment. The stator member and the rotor member provide respective adjacent surfaces, while a static shut-off device engages both adjacent surfaces when the rotor member is static and disengages one or more of the surfaces when the rotor member is dynamic. In one embodiment of the invention at least one of the surfaces is inclined to the longitudinal axis at an angle greater or less than 90°.

Abstract: An alignment apparatus includes a first stator, located in a stator of a piece of rotating equipment, and a second stator couplingly connected to the first stator and able to be angularly rotated relative to the first stator. The second stator can seal an interface between a shaft and housing in the piece of rotating equipment. The alignment apparatus permits angular misalignment between a stator, a housing and a rotor shaft, and may be used, for example, in a bearing protector or an isolator installed on a Pillow Box.

Abstract: The present invention provides a modular gland member for use in a mechanical seal, wherein the gland member has a radially or axially extending cavity adjacent to a seal face, and the cavity includes a solid or fluid thermal conducting member to dissipate heat from the seal face into the surrounding components.

Abstract: A seal device, which accommodates axial displacement between a housing and shaft of an item of rotating equipment, includes a stator which locates into the housing of a piece of rotating equipment. A first rotor locates on the shaft of the rotating equipment and a second rotor is rotationally coupled to the first rotor with the first rotor being permitted to axially float with respect to the second rotor. The device provides sealing integrity when the shaft is both idle and operational. The sealing device may be used, for instance, in a double ended centrifugal pump where shaft displacement occurs from thermal expansion.

Abstract: A bearing seal device has an air purge mechanism that includes a rotor connected to the shaft of a piece of rotating equipment and a stator connected to the housing for the rotating equipment. An air passage extends between an inlet and an outlet and is at least partially defined by circumferentially extending stator and/or rotor surfaces. Preferably, the stator incorporates an orifice, which permits the attachment of an air supply line. The air purge mechanism may include a self-compensating air supply regulator device, located adjacent a circumferential air distribution cavity and substantially adjacent to one or more atmospheric communication orifices. The bearing seal device provides sealing integrity when the shaft is both idle and operational.

Abstract: A gas seal assembly includes a pair of mutually rotatable sealing members, each of which has a front face adjacent a gap between the two members which constitutes a leakage path through the seal assembly. The two sealing member are urged, in use, in a direction to close the gap and a gas bleed arrangement is provided for allowing gas from a high pressure side of the seal to bleed into the gap so as to apply a force tending to separate the members. The gas bleed arrangement includes a bore extending between the front face and a rear face of one of the sealing members, a generally radial groove formed in the rear face of the sealing member and a plate overlying the rear face to cover the groove and thereby define between the rear face of the sealing member and the plate a bleed passage connecting the bore to the high pressure side of the seal.

Abstract: A bearing seal includes a radially split stator and a rotor. The rotor is enclosed within the stator along the internal length of the rotor. The rotor may, optionally, also be radially split.

Abstract: A gland plate includes a rigid, disk-shaped element that includes at least one radially extending wall having a thickness of from about 0.1 to 4 mm.

Abstract: A mechanical seal support system may facilitate feeding barrier fluid to a mechanical seal. A predetermined difference in pressure between the barrier fluid at a position before and after passage through the seal is detected. The flow of barrier fluid to the seal may be reduced when the predetermined pressure difference is detected.

Abstract: A seal support system (1) for maintaining barrier fluid in a mechanical seal (2) including a vessel (10) for containing barrier fluid, a system for feeding barrier fluid between the vessel (10) and the mechanical seal (2), a system for automatically detecting barrier fluid within the vessel (10) and a system for automatically restoring barrier fluid within the vessel (10), and a system (100) for automatically draining barrier fluid from the vessel (10) after a predetermined period of time. The system for discharging (100) may automatically drain barrier fluid from the vessel (10) for a predetermined period of time. The system of discharging (100) may automatically drain barrier fluid from the vessel (10) with a predetermined rate of discharge. The system of discharging (100) preferably includes a system for draining barrier fluid from the vessel (10) and a valve for automatically controlling the draining of barrier fluid from the vessel.

Abstract: In a system and method for ensuring that a liquid ring vacuum pump contains an optimum amount of barrier fluid the pump and a vessel for containing barrier fluid are set at respective levels such that, when the pump is at rest and the level of barrier fluid id at its optimum the level of the fluid in the vessel is at a convenient and pre-selected level with respect to the height of the vessel. In operation of the pump, if the level of the barrier fluid in the vessel departs from the pre-selected level as detected by detecting means, the vessel is automatically charge with barrier fluid from a barrier fluid supply, or barrier fluid is automatically discharged from the vessel, as appropriate. The correct level or quantity of barrier fluid in the pump is thereby maintained.

Abstract: A seal support system (1) for maintaining barrier fluid in a mechanical seal (2) comprising a vessel (10) for containing barrier fluid, feeding means for feeding barrier fluid between the vessel (10) and the mechanical seal (2), detecting means for automatically detecting barrier fluid within the vessel (10) and restoring means for automatically restoring barrier fluid within the vessel (10) and further comprising discharging means (100) for automatically draining barrier fluid from the vessel (10) after a predetermined period of time. The discharging means (100) may automatically drain barrier fluid from the vessel (10) for a predetermined period of time. The discharging means (100) may automatically drain barrier fluid from the vessel (10) with a predetermined rate of discharge. The discharging means (100) preferably comprise outlet means (120) for draining barrier fluid from the vessel (10) and a valve for automatically controlling the draining of barrier fluid from the vessel.

Abstract: A seal that provides sealing between a rotatable shaft and a housing has a stationary part for connection to the housing and a rotary part for rotation with the shaft. The rotary part includes a sleeve for mounting on the shaft. One end of the sleeve is provided with a non-elastometric sealing arrangement. The sealing arrangement has sealing surfaces for contacting outer circumferential surfaces of the sleeve and the shaft as well as means for effecting sealing engagement between each of said sleeve and said shaft and a respective sealing surface.

Abstract: A system and related method for generating an illustration of a first device, with the first device being one device of a plurality of such devices, the system having a plurality of illustration templates with each illustration template corresponding to one device of the plurality of devices, a device for choosing one illustration template corresponding the first device of said plurality of devices, and a device for modifying the illustration template for the first device responsive to features of the first device for generating an illustration thereof.

Abstract: A mechanical seal 30 is disclosed comprising a sleeve 32 which is adapted to be affixed to the shaft 34 of a item of mechanical equipment, together with a rotary component 42 which carries a rotary seal face 44. Two O-ring grooves 46, 48 are provided on the sleeve 32, the first 46 being remote from the rotary seal face 44 and cut somewhat deeper into the sleeve 32 than the second 48. The rotary component 42 has a first region 50 remote from the rotary seal face 44, the inner surface of which has a relatively small diameter and a second region 52 between the first region 50 and the rotary seal face 44, the inner surface of which has a larger diameter. A pair of O-rings 54, 56 are located in the O-ring grooves 46, 48 and seal against the inner surface of the rotary component 42. The net thrust, if any, acting on the rotary component 42 and hence on the rotary seal face 44 tends to close the seal face irrespective of whether the barrier fluid pressure is in excess for less than the product pressure.