Abstract: A scroll compressor is described. The scroll compressor comprises a case having a high-pressure side and a low-pressure side, a stationary scroll plate having a base plate with a first side having at least one projection, which forms a spiral wrap, and a second side having a first annular protrusion, a pilot plate for separating the high-pressure side of the case from the low-pressure side of the case and the pilot plate abutting the second side of the stationary scroll plate, wherein the pilot plate has a first side, wherein the first side faces the second side of the stationary scroll plate and wherein the first side has a second annular protrusion, and a seal, wherein the seal seals a radial gap between the first annular protrusion and the second annular protrusion.

Abstract: A seal assembly for a truck wheel hub assembly includes an inner annular case having an axial portion disposable about an axle and a radial portion extending radially outwardly from the axial portion. An outer annular case is coupleable with a hub bore and has a radial portion extending radially inwardly from the bore. An annular elastomeric seal member has a base portion disposed on the outer case and at least one flexible axial seal lip with a first end integrally formed with the base portion and a second, free end sealingly engageable with the radial portion of the inner case. A radial projection extends radially inwardly from the outer case radial portion and has an inner radial end located adjacent to and spaced radially outwardly from the inner case axial portion or an outer circumferential surface disposed about the axle so as to form a labyrinth seal gap.

Abstract: An all-metal conical combined screw pump suitable for petroleum field includes: a stator, a rotor, a sleeve and a sucker rod, wherein the internal threaded curved surface and the external threaded curved surface are both tapered The spiral structure and the taper are the same; the all-metal conical combined screw pump further comprises a movable part, a fixed part and a elastic part, the movable part is fixedly connected to the rotor, the fixed part is fixedly connected to the sucker rod, one end of the elastic member abuts against the movable part or the rotor, and the other end abuts against the fixed part or the sucker rod, the elastic member can Elastic contraction or elastic expansion along the sliding direction of the movable part.

Abstract: A seal (100) for sealing a lubricant space prevents lubricant (320) escaping. A rolling stand has a seal of this kind. The seal (100) is made at least partially from elastic material. To enable a pressing force FR, with which the bottom face (112) of the seal is pressed against an opposite contact surface (218), for example of a roll journal (212), to be variably set, the seal (100) has at least two cavities, which are separated from each other in the circumferential direction and which are open towards the lubricant space of the bearing.

Abstract: The present invention is directed to a fluid sealing member and a motor for preventing or reducing chances of fluids and/or substances or products from entering the motor chamber or cavity of a motor and causing damage to the motor's internal components and/or causing the motor to make undesirable noises or sounds. The present invention is also directed to a motor having a fluid sealing member, and to a fluid pump having a fluid sealing member. The present invention is further directed to a fluid pump that comprises a jet assembly and a motor assembly, which comprises a motor. The fluid pump may further comprise one, some or all of the following: a fluid sealing member, a mounting housing member or coupling device, a gasket or seal, a liner (when a liner is not already provided or present), and a driven magnetic disc assembly having a magnetic pole array.

Abstract: The disclosure concerns a seal, in particular a rod seal for sealing an axially movable rod in a guide cylinder, in particular a piston seal for a pneumatically, electrically or hydraulically driven coating agent pump for pumping coating agent, having an annular sealing element for sealingly resting on a circumferential surface of an axially movable rod, and having at least one elastic annular pretensioning element, the annular pretensioning element surrounding the annular sealing element radially on the outside and pretensioning it radially to the inside. The disclosure provides an annular seal base body which externally surrounds and holds the sealing element and the pretensioning element. In addition, the disclosure also comprises an inverted variant in which the seal is arranged in an annular groove in a lateral surface of a piston and lies sealingly against the cylinder running surface.

Abstract: A contamination guard for a machine is disclosed herein. The contamination guard includes an inner ring, a first annulus, a second annulus, and an impeller. The impeller is configured to promote intake of nearby air with contamination. The first annulus and second annulus form a passage that is configured to sling away air with contamination during operation of the machine.

Abstract: A rotary union includes a housing having a shaft rotatably mounted in a bore. A plurality of annular plates is mounted on the shaft in spaced relation, and a plurality of spools is disposed in alternating fashion between the plurality of annular plates on the shaft. Each spool includes two seal rings creating mechanical face seals with adjacent annular plates. The shaft, the plurality of annular plates and the plurality of spools are arranged to assemble in a stacked arrangement, which is insertable as a whole into the cylindrical bore of the housing.

Abstract: An annular seal, such as for use in a fracking pump, that is designed to exclude debris from entering the sealing gland, and is designed to enhance seal stability and extrusion resistance during high-pressure pulsation events. The seal includes a heel side configured to fit within an annular groove of a first component, a sealing side opposite the heel side that is configured to seal against a second component, and opposite leading and trailing sides that are radially interposed between the sealing and heel sides. The heel side may have a flat heel surface in transverse cross-section. The sealing side may have a concave portion that is configured to open toward and face the second component. The leading side is configured to face toward upstream fluid, and may have a flat leading surface in transverse cross-section that is oriented perpendicularly to a longitudinal axis of the seal.

Abstract: A radial seal segment includes a radial air dam. The radial air dam includes at least one air curtain generator provided along an inside diameter of the radial air dam. The radial seal segment may include one or more hydrodynamic features. The radial seal segment may include a plurality of radial air dam grooves. A sealing assembly may include such radial seal segments.

Abstract: A rotating shaft seal for a rotating shaft containing a rotating assembly attached to the rotating shaft, wherein the sealing force applied to both ends of the rotating shaft within the housing is created within the rotating assembly and is applied substantially equally to both seal rings.

Abstract: A seal assembly includes a pair of opposing seal lips, a bearing contacting both seal lips, a wall structure placed between and in contact with both seal lips, and a housing enclosing the pair of seal lips and the bearing that is configured to axially slide the seal lips, wall structure and bearing as the housing axially slides.

Abstract: A chain joint assembly includes a pin integral with at least one respective first chain link and a bushing, integral with at least one respective second chain link. The pin and the bushing are coaxial. The bushing has a constant inside diameter. At least one elastic ring is interposed between the pin and the bushing. The at least one elastic ring is substantially aligned with the portion of bushing which is coupled to a respective second chain link.

Abstract: A non-contacting seal is provided, including a first sealing face formed on an end of a primary ring and a second sealing face formed on an end of a mating ring. Grooves may be formed in at least one of the first and second sealing faces, such that the grooves extend from one edge of the respective sealing face to an intermediate radius of the respective sealing face. At least one groove may include an entrance edge along the one edge of the respective sealing face and a dam wall opposite the entrance edge. The at least one groove may also include two symmetric side walls extending from the entrance edge to the dam wall. The two symmetric side walls may include a first convex curve extending from the entrance edge to a transition point and a second concave curve extending from the transition point to the dam wall.

Abstract: An improved mechanical seal and repair method can be used with mechanical pump seal assemblies. The improved seal utilizes rotating and non-rotating sections of improved configuration, each of which can form a seal using a standard size carbon-face O-ring. The rotating section includes an upper seal member and a lower drive member, the upper seal member being made of a first material and the lower drive member being made of a second material, the upper seal member and the lower drive member being connected such that movement of the lower drive member causes movement (rotation) of the upper seal member. The mechanical seal can be in the form of replacement parts that replace the old parts without modifications to the overall seal and assembly.

Abstract: A fluid flow machine, in particular turbocompressor, with a housing, having a rotor mounted in the housing, and with a dry gas seal for sealing the rotor relative to the housing. The housing at least one recess or bore for a gaseous medium is introduced, via which the gaseous medium for temperature-controlling the dry gas seal can be conducted in the direction of the same. The gaseous medium can be directly conducted into a gas space formed between the housing and the dry gas seal via the or each recess or bore. Additionally or alternatively, the or each recess or bore receives a guide tube for the gaseous medium.

Abstract: A drive coupling for connecting a drive shaft to an output member. The drive coupling includes a non-circular body portion defining a central rotational axis, a tang projecting axially from the body portion on the central rotational axis, and at least one through-hole extending through the body portion adjacent the tang. The tang can shear from the body portion in response to the output member seizing during rotation of the drive shaft. The at least one through-hole provides a flow path for fluid to pressurize a lip seal around the drive shaft.

Abstract: A dry gas mechanical seal system configured to inhibit the emission of process gas. The mechanical seal system having tandem first and second stage seals, and a single separation gas supply subsystem configured to direct a supply of separation gas from an inlet through interfacing portions of the first stage seal into a process cavity and from the inlet through the interfacing portions of the second stage seal and out through an outlet to the atmosphere, thereby inhibiting the emission of process gas between a compressor housing and a rotating compressor shaft.

Abstract: An intershaft seal assembly for use between an inner shaft and an outer shaft within a turbine engine is presented. The seal assembly includes a sealing ring, centrifugal retaining plates, and end rings. The sealing ring further includes a plurality of asymmetric ring segments whereby each asymmetric ring segment further includes a vertical flange and horizontal flanges extending from the vertical flange in a non-symmetric arrangement. At least one slot is disposed along each horizontal flange. The sealing ring is interposed between the centrifugal retaining plates. Each centrifugal retaining plate includes a plurality of tabs extending therefrom. Each tab is engaged by one slot. The sealing ring and the centrifugal retaining plates are interposed between the end rings. Each centrifugal retaining plate is directly interposed between one horizontal flange and one end ring. The vertical flange extends from between the end rings in the direction of the outer shaft.

Abstract: A modular carousel for holding a drill pipe segment in a drilling rig includes a central support having a top end and a bottom end, and a top plate removably coupled to the top end of the central support, the top plate including a top plate slot sized to receive an upper end portion of the drill pipe segment. A breaker plate has a breaker plate slot sized to receive an intermediate portion of the drill pipe segment, and a coupler assembly is configured to removably attach the breaker plate to the bottom end of the central support. A base plate is coupled to the breaker plate by an extension support, the base plate including a cup sized to receive a bottom end portion of the drill pipe segment.

Abstract: The present disclosure relates to a first seal for an aircraft blade outer air seal (“BOAS”) comprising a first portion comprising a first channel and a second channel, and a second portion comprising a first projection and a second projection, wherein the first projection slidably couples to the first channel and the second projection slidably couples to the second channel. The first portion and/or the second portion may be coated with a low friction substance. The first portion may be coupled to a vane support and/or a BOAS, and the second portion may be coupled to a first OAS support. The first seal may enable a radial translation of the BOAS in response to an aircraft maneuver.

Abstract: A sleeve, rotary seal, rotary seal assembly, shaft with an integrated primary surface, rotary seal assembly component, and/or any combination thereof which preferably results in rotary seals having a higher tolerance for radial eccentricity (static eccentricity and/or dynamic eccentricity). Related methods of manufacturing, using, and/or providing same are also set forth.

Abstract: What is described is a tree seal for use on a rotating element. The tree seal includes a trunk configured to be coupled to the rotating element. The tree seal also includes a first branch coupled to the trunk and having a first edge configured to form a first mini seal with a housing. The tree seal also includes a second branch coupled to the trunk and having a second edge configured to form a second mini seal with the housing.

Abstract: Sealing faces of a pair of sliding parts include circulation grooves, each including an inlet section, an outlet section, and a communication section provided in one of the sealing faces. A positive pressure generation mechanism is provided in a part surrounded by the fluid circulation groove and a high pressure fluid side, and a negative pressure generation mechanism is provided on a low pressure fluid side between the plurality of fluid circulation grooves.

Abstract: A tension roller or reel device for a torque transmission element. The device comprises at least one bearing having one inner race, one outer race and at least one row of rolling elements between the inner race and the outer race, a pulley on top of the outer race, and a retaining screw inserted into a central bore of the inner race. The bore of the inner race is provided with a circumferential cavity in which a retaining ring is fitted securely and integrally, the retaining ring comprising an interaction feature providing interaction with the screw so as to allow an axial immobilization of the screw in relation to the bearing.

Abstract: A tension roller or reel device for a torque transmission element. The device comprises at least one bearing having one inner race, one outer race and at least one row of rolling elements between the inner race and the outer race, a pulley on top of the outer race, and a retaining screw inserted into a central bore of the inner race. The bore of the inner race is provided with a circumferential cavity in which an elastic ring is fitted non-securely and integrally, the cavity having an axial length strictly greater than the axial dimension of the elastic ring.

Abstract: A shaft-seal device for high-temperature fluid including a seal case (2) formed as a metallic cylindrical structure of a single unit and comprised of a main body portion (2a, 2b, 2c), first and second holding portions (2d, 2e), first and second partition portions (2f, 2h), a channel formation portion (2g) forming a minute annular channel (27) with the outer circumference surface of a rotary shaft (1), and an o-ring holding portion (2i). The seal case is installed in an apparatus housing (8) with first and second o-rings (2m, 2n) in between. The intra-seal case region (A1), in which sealing rings (31, 32, 41, 42, 51, 52) of mechanical seals (3, 4, 5) are provided, and the high-temperature fluid region, which is an intra-apparatus housing region (A), are partitioned by a cooling chamber (28) into and from which coolant (82) is supplied and discharged via feed/discharge coolant paths (80, 81).

Abstract: In accordance with one embodiment of the present disclosure, a method may include installing a first seal around a motor shaft. The method may also include installing a second seal around the motor shaft, wherein the second seal and the first seal may form a hydrodynamic seal when the motor shaft rotates. The method may further include installing a spacer in-between the second seal and the first seal.

Abstract: A mechanical seal device in which, between a processing equipment which performs processing under a sterile condition and a rotary shaft used with its one end inserted in the processing equipment from an atmosphere side, seal parts are disposed outside the processing equipment at least at two places along a length direction of the rotary shaft from the processing equipment side toward the atmosphere side seals the rotary shaft, and when the inside of the processing equipment and the seal parts are sterilized, the atmosphere-side seal part is also easily and surely sterilized similarly to the other seal part.

Abstract: A seal assembly is disclosed for use between a housing and a rotatable shaft protruding exteriorly from the housing, with the shat being journalled for rotation in an eccentric cartridge which in turn is rotatably adjustable. The seal assembly comprises a circular flinger mounted on the shaft for rotation therewith. The flinger has radially outwardly projecting flanges defining an axial space therebetween. A seal carrier surrounds the flinger and has axially spaced first and second inner rims projecting radially inwardly into the space between the flanges of the flinger. Ring seals are carried by the seal carriers. The inner rims are resiliently urged to maintain the ring seals in contact with the flinger flanges.

Abstract: A rotating assembly of a mechanical seal includes a retainer, a pair of compression rings, a shaft sleeve, a first rotating seal ring and a second rotating seal ring. The retainer includes a plurality of spring members and a plurality of slide legs longitudinally extended in opposite directions to define limiting spaces where the compression rings are correspondingly restricted. The compression rings are located at opposite sides of the retainer between which the spring members are arranged. In assembling, the retainer, the compression rings, the first rotating seal ring and the second rotating seal ring are assembled on the shaft sleeve. Spring forces of the spring members can actuate the compression rings to push the first rotating seal ring and the second rotating seal ring in the opposite directions.

Abstract: A driven seal assembly is provided for a shaft rotated by a motor disposed in a motor housing and having a seal housing adjacent to the motor housing through which the shaft extends. A first rotary seal is frictionally fit on the shaft adjacent the first stationary seal seat. A second rotary seal is frictionally fit on the shaft adjacent a second stationary seal seat. A spring surrounds the shaft and provides bi-directional axial forces on the first and second rotary seals against the first and second stationary seal seats. A positive drive mechanism is mounted on the shaft between the first and second rotary seals in a driving, mating relationship therewith and includes a first driving element in driving engagement with the first rotary seal and a second driving element in driving engagement with the second rotary seal.

Abstract: The invention provides a seal for a rotatable shaft. The seal includes an inner case mountable to the shaft and having a body and first and second flanges extending radially outward from the body. The seal includes first and second sealing discs operable to seal against the first and second flanges of the inner case. The sealing discs are immovably associated with a housing spaced from the shaft. A spring encircles the shaft and inner case to urge the sealing discs against the flanges. The spring rate of the spring is controlled to enhance sealing, reduce turning torque, and extend life of the seal.

Abstract: A seal assembly for a rotational assembly includes a first seal, a second seal and a crossover support. The crossover support includes a first geometry that interacts with the first seal and a second, different geometry that interacts with the second seal.

Abstract: A generally cylindrical shaft seal with an axial opening is disclosed having annular “lips” or “legs” on one or both ends that are separated by a fluid-filled cavity. The seal is adapted to seal between a support or housing holding the seal and a generally cylindrical shaft passing axially through the seal. Fluid, under pressure, may enter the cavity and urge the lips or legs in a radial direction which enhances the sealing engagement of the seal member to the shaft and the housing. In certain embodiments, the seal has a concave inner surface to minimize the contact area (and hence the friction) between the seal and the movable shaft. The outer circumference of the seal may be equipped with one or more O-ring seals for sealing to the housing or support. The seal may be fabricated from natural or synthetic polymers, metal or composite materials.

Abstract: A machine tool gear mechanism (1) such as a spindle gear mechanism, transmits torque from an output shaft (3) of the gear mechanism directly to a spindle (6). The mechanism includes a rotary passage (14) as a device for delivering coolants, emulsions, oils or air between the output shaft (3) or the motor and the spindle (6). The rotary passage (14) is integrated in the spindle (6).

Abstract: A seal assembly for sealing a space between a rotating shaft and a housing. In this regard, the seal assembly includes a rotating component connected to the shaft, and a stationary component connected to the housing. A first seal is connected to the rotating component and a second seal is connected to the stationary component. The first seal includes at least one dispersion member that generates a fluid disturbance in a region adjacent the space during rotation of the rotating component and a discontinuity that provide a pathway for a contaminant to exit the space.

Abstract: In order to provide a seal arrangement for sealing between a first medium space filled with a first medium and a second medium space filled with a second medium which ensures reliable sealing between the medium spaces with very low leakage values even over a prolonged period of use, wherein said seal arrangement comprises a moveable component which is displaceable in the longitudinal direction thereof and/or rotatable about the longitudinal direction thereof and extends through the seal arrangement and wherein the seal arrangement comprises a sealing element which comprises a first sealing region that is sealing in relation to the first medium space and a second sealing region that is sealing in relation to the second medium space, wherein the first sealing region comprises a first dynamic sealing section abutting against the moveable component and the second sealing region comprises a second dynamic sealing section abutting against the moveable component and at least one of the two dynamic sealing sections h

Abstract: The invention provides a seal for a rotatable shaft. The seal includes an inner case mountable to the shaft and having a body and first and second flanges extending radially outward from the body. The seal includes first and second sealing discs operable to seal against the first and second flanges of the inner case. The sealing discs are immovably associated with a housing spaced from the shaft. A spring encircles the shaft and inner case to urge the sealing discs against the flanges. The spring rate of the spring is controlled to enhance sealing, reduce turning torque, and extend life of the seal.

Abstract: An apparatus for retaining lubrication oil at the sliding surface of a double-type shaft seal device disposed within an oil chamber of a submersible pump. The apparatus prevents lubrication oil from scattering from the center portion of the oil chamber of the submersible pump toward the circumferential wall, and prevents entrapment of air into the lubrication oil through formation of an oil film in the oil outlet, irrespective of variation in rotational speed of the pump shaft, so that the seal apparatus is lubricated and cooled effectively.

Abstract: The invention concerns a sealing- and cooling system for a submersible machine, such as a pump or a mixer. The device comprises an easily replaceable (4) containing mechanical face seals with an intermediate room for a barrier liquid where a circulation pump (10) is arranged for circulation of said liquid along the seals as well as around the driving unit (1) of the machine. During circulation, the liquid passes a first narrow gap (6) around the driving unit where heat is absorbed and a second narrow gap (7) where heat is discharged.

Abstract: The compressor has a cooling structure to effectively cool a shaft seal device interposed between a housing of the compressor and a rotary shaft. The front housing has a through-hole through which the rotary shaft extends, and the shaft seal device is arranged in the through-hole. A passage (suction passage portion) is connected to the thorough-hole. An inlet from a portion of the passage to the through-hole is arranged right above the rotary shaft, and an outlet from the through-hole to a portion of the passage is arranged right below the rotary shaft. The passage is connected to a suction pressure region outside the compressor and to the suction chamber via the through-hole.

Abstract: A reactor pressure vessel (RPV) for a nuclear reactor that permits measurement of the flow through each reactor internal pump (RIP) is described. The reactor pressure vessel also includes at least one reactor internal pump that includes an impeller and a pump diffuser. At least two seal rings extend circumferentially around an outer surface of the diffuser housing outer wall and are located in circumferential grooves in the housing outer wall. At least one lateral bore extends through the housing outer wall into a diffuser housing longitudinal flow passage. Each lateral bore is located in an area between two adjacent seal rings, with each inter-seal ring area containing one lateral bore. At least one pressure tap bore extends from the outer surface of the RPV bottom head petal, through the pump deck to an inner surface of a pump deck opening. Each pressure tap bore is aligned with an area in the RIP containing a corresponding lateral bore.

Abstract: The invention concerns a seal device for a submersible machine, such as a pump or a mixer. The seal device is designed as an easily replaceable unit comprising two mechanical face seals (4,6) and (5,7) resp. with an intermediate room for a barrier liquid in which a pump for circulation of said liquid is arranged. A spring housing (10) which serves as a uniting means for the seal device is provided with connecting means for the rotary seal rings (4) and (5) resp. and acts as a hub for impeller vanes (16) in said circulation pump.

Abstract: A seal device for a submersible machine, such as a pump or a mixer, the seal device being designed as an easily replaceable unit having two mechanical face seals parted by a room for a barrier liquid in which a pump impeller is located. The impeller circulates the barrier liquid passing the liquid along the seals and through cooling channels in the driving unit of the machine.

Abstract: The shaft seal assembly of cartridge designed for sealing shafts entering or exiting enclosed vessels. The enclosed vessels may have a pressure different from the atmospheric pressure and the seal will normally prevent leakage from or into the vessel. The seal is accomplished by having a plurality of fluid pressures presented to different faces or portions of the seals. Utilization of these pressures provides a seal between the faces of the rotating parts and the stationary parts of the seal with a minimum of friction. This reduced friction is a result of some amount of air movement between the sealing faces. This air movement into and out of the seal, resulting from fluid pressure differentials, will also carry away any contaminants that may get into the seal, either to the ambient atmosphere or to a recovery system. The seal is designed to accept axial and radial shaft displacement while maintaining a positive seal between the vessel and the atmosphere.