Abstract: It is intended to improve maintainability of a seal structure in a place where the rotation shaft is inserted in the housing. A seal structure of a mechanical device is provided with a housing 18 having an opening in which an input shaft 21 is inserted, a holding plate 41 which is connected to a periphery of the opening of the housing 18 and which has an opening in which the input shaft 21 is inserted, a felt ring 46 which is provided in the holding plate 41 and which seals a space between the holding plate 41 and the input shaft 21, a separable housing 43 which is provided to cover the holding plate 41 and a separable oil seal 45 which seals the space between the holding plate 41 and the input shaft 21 and a space between the cover and the rotation shaft.

Abstract: A seal (200) of substantially wedge shaped cross section self adjusts and seals pivot joints (100) over a range of gap widths to be sealed.

Abstract: A seal assembly is disclosed that can be used to seal a bearing case in a turbine. The seal assembly has an annular seal plate seated within a groove defined in the bearing case and radially-offset from the turbine shaft. A seal retainer is mounted on the shaft axially-offset from the annular seal plate and defines a channel therein for receiving and seating a seal therein. The seal has a flexible lip that extends from the body of the seal and engages either the inside surface of the bearing case or a counterface of the annular seal plate, thereby preventing or substantially restricting the influx of contaminants into the bearing case.

Abstract: An all-elastomeric sealing element for a rotating control device includes a base portion, a conical portion and has a central pipe opening through both the base portion and the conical section. The conical section has an elastomeric core layer and an elastomeric surface sealing layer which encases the core layer. The surface sealing layer is softer than the core layer, as measured on a standard durometer scale.

Abstract: An assembly, for example in a gas turbine engine, includes a rotatable component supported by a bearing in a support structure. A sealing arrangement includes a non-rotating sealing ring which makes sealing contact with sealing features on the rotatable component. The non-rotating sealing ring is radially displaceable with respect to the support structure by means of ribs which engage axially facing support faces of the support structure. The non-rotating sealing ring is radially located by an outer, non-rotating, race of the bearing, by means of a locating surface on a locating body of the non-rotating sealing ring. As a result of this arrangement, the running clearance at the sealing arrangement can be maintained, despite radial displacement of the rotatable component with respect to the support structure, and despite thermal and mechanical deflections of the support structure.

Abstract: A sealing assembly and method of manufacturing a sealing assembly for a spring brake actuator having a dynamic center seal for sealing a first surface to a second surface. The sealing assembly has dynamic sealing elements that seal in a smooth hole or bore, where the sealing element or element stack is retained in the hole or bore on each end by a bearing for the center pushrod or center tube.

Abstract: A method and apparatus for changing a length of a landing gear system. A first cylinder and a second cylinder are moved relative to each other along an axis extending centrally through the first cylinder and the second cylinder such that the first cylinder and the second cylinder are in an extended position. In response to the first cylinder and the second cylinder being in the extended position, a flow of a fluid is substantially prevented between a first chamber formed between the first cylinder and the second cylinder and a second chamber within the first cylinder and the second cylinder. In response to a pressure applied to the first chamber, the first cylinder and the second cylinder are moved relative to each other along the axis such that a length of the first cylinder and the second cylinder is reduced.

Abstract: A workpiece holder for fluid processing a workpiece including a transportable frame, a flexible member connected to the frame and defining at least one retaining feature, and a ring comprising at least one engagement feature engageable with the at least one retaining feature of the flexible member, wherein the flexible member is flexed to provide a force to the at least one engagement feature to cause the ring to form a barrier to fluid entry with the workpiece.

Abstract: Butterfly valve plate sealing assemblies are provided that include a sealing ring and a retention spacer disposed at least partially within a sealing ring groove formed about a periphery of a butterfly valve plate. The sealing ring includes a first portion, a second portion configured substantially perpendicular to the first portion, and a substantially L-shaped cross-section. The sealing ring is positioned at least partially within a groove opening and a groove body defining the sealing ring groove. The retention spacer is positioned at least partially within the groove opening and adjacent the first portion of the sealing ring. The retention spacer is configured to limit expansion of the sealing ring when under the influence of a pressurized fluid flow. The second portion of the sealing ring may be configured to optimize stiffness for a desired sealing ring tension.

Abstract: A dual seal accommodates radial and axial movement, and accommodates positive and negative pressure differentials, when in sealing engagement about a rotating shaft.

Abstract: A sealing device (1) having: a slide ring (2) and a back ring (3). The sealing device (1) is configured to seal an annular gap between a housing having a shaft hole, and a shaft inserted through the shaft hole. The slide ring (2) has: a through-cut (22), comprising a circumferential cut (22A), and axial cuts (22B) extending from both ends of the circumferential cut, along the axial direction; and multiple parting lines (23A, 23B) formed on a surface of the slide ring (2). The parting lines (23A, 23B) are arranged so that the parting lines (23A, 23B) are not overlapped with the circumferential cut (22A) exposed at the junction surface of the slide ring (2) with the back ring (3), throughout the lengthwise direction of the circumferential cut.

Abstract: [Object] To provide a sealing device, which is capable of keeping a higher sealability even when a fluid pressure is not applied and even just after starting of application of the fluid pressure, and which is capable of reducing a sliding resistance while keeping a sealability during operation where the fluid pressure is always applied thereto.

Abstract: A flexible flow control bushing is comprised of flexible, high temperature resistant, self-lubricating composite material and has a unique configuration, which, viewed cross-sectionally, before installation has a squared off sine wave configuration with a uniform amplitude and gap. A fluid seal arrangement is also disclosed.

Abstract: In a sealing arrangement for an control device of a charging device which sealing arrangement includes a bearing bushing in which an control shaft is rotatably supported by the bushing in a housing opening of the charging device, the control shaft is provided with a collar disposed in the housing opening at an axial end of the bushing and the collar includes a groove accommodating a seal ring which is in direct contact with the wall of the opening for sealing the shaft supported in the bushing directly with respect to the opening wall.

Abstract: The present invention relates to a link seal for a track of a tracked vehicle, in which fine protrusions of an indefinite pattern are formed on the adhesive surface of the seating groove of the main body made of a high-strength resin and the adhesive surface of the seating part of the sub-body made of an urethane resin and then the adhesive surfaces of the seating groove and the seating part are treated roughly into surfaces of a fine concavo-convex shape to increase the adhesion between the main body and sub-body. The link seal includes: an annular main body including a seating groove, a circumferential flange portion, and an annular sleeve; an annular sub-body including a seating part; and an annular rubber ring made of a cushion material and having a through-hole 301 formed at the center thereof.

Abstract: A grease collector is described, which is connectable to a wind turbine nacelle. The grease collector includes a channel with a flexible side portion for providing a sealing between the nacelle and a wind turbine tower. Moreover, a wind turbine nacelle and a wind turbine with a grease collector and a method for collecting excess grease which is emitted from a yaw system of a wind turbine are provided.

Abstract: A wear sleeve assembly for a seal on a shaft includes a sleeve having inner and outer circumferential surfaces, the outer surface being engageable by a seal inner surface at a contact location to prevent fluid flow between the seal inner surface and the sleeve outer surface. The sleeve inner surface defines a bore sized to receive a portion of the shaft with clearance. A coupler is configured to connect the sleeve with the shaft and provides a clearance space between the sleeve inner surface and a shaft outer surface at about the seal contact location. Thereby, the sleeve is adjustably positionable relative to the shaft so that the sleeve remains generally centered within the seal as the sleeve and shaft rotate about the axis. The coupler preferably includes an annular body with first and second axially-spaced, relatively displaceable sections for displacing the sleeve relative to the shaft.

Abstract: An assembly is disclosed for sealing the sliding interface between two objects capable of sliding or moving with respect to one another, but where the sliding interface must provide a substantial seal against pressure loss therethrough, such as where an assembly seals the sliding interface between a piston and a cylinder or between a rod and a bushing. Although some features of this invention would be beneficial in applications using a liquid lubricant, the invention is particularly beneficial in applications not using a liquid lubricant, where the materials of the piston, cylinder, and sealing system are chosen additionally for their ability to provide self-lubrication as they slide over each other, while providing low friction and a low wear rate during sliding.

Abstract: The invention relates to a sealing ring (10) having a first sealing surface (26) arranged on the inner circumference thereof and at least one second sealing surface (13, 14) arranged on the outer circumference thereof. According to the invention, a compensation region (17, 18) that can be at least partially deformed in an elastic manner in the axial direction is arranged on at least one of the two faces of the sealing ring (10).

Abstract: The present application provides an elliptical sealing system for use with a rotor and a stator housing of a rotary machine. The elliptical sealing system may include a number of sealing segments with an abradable coating thereon. The sealing segments with the abradable coating thereon may have a substantially elliptical shape. A number of biasing members may be in communication with the sealing segments and the stator housing.

Abstract: A seal assembly includes a first member that pivots about an axis of a joint relative to a second member. The seal assembly includes adhesive, a seal ring and a load ring for a seal cavity of the first member. The adhesive may be applied between at least one of the seal cavity and a first end face, the seal cavity and a first surface, the seal ring and an annular inner peripheral surface, the seal ring and a second surface, and the seal ring and a second end face. Alternatively, the seal cavity may comprise a roughened area where the load ring contacts the seal cavity.

Abstract: An air cycle machine includes turbine and compressor housings respectively having a turbine and a compressor. An insulator seal plate is fastened between the turbine and compressor housings. The insulator seal plate includes a bore. A seal has an outer diameter that engages the bore. The seal also includes an inner diameter provided between lateral sides defining a first width. The inner diameter provides a seal and configured to engage a rotating surface. The outer diameter to the inner diameter provides a first ratio of 1.30-1.31. The inner diameter to the first width provides a second ratio of 1.59-1.61. A rotor shaft is disposed in the seal and includes knife edges extending from the rotor shaft to the seal land. The rotor shaft supports the turbine and the compressor.

Abstract: A seal ring stabilization system disclosed herein includes first and second seal rings, each including a substantially planar surface and a substantially non-planar surface opposite the substantially planar surface. The substantially planar surface of the first seal ring and the substantially planar surface of the second seal ring engage one another. The first seal ring includes a protrusion extending from the substantially planar surface of the first seal ring and away from the substantially non-planar surface of the first seal ring, while the second seal ring defines a recess extending from the substantially planar surface of the first seal ring and toward the substantially non-planar surface of the second seal ring. The recess of the second seal ring receives the protrusion of the first seal ring.

Abstract: An example seal shaft includes a cylindrical body establishing a bore that extends axially between a first end portion of the body and a second end portion of the body. Apertures are also established in the body. The apertures extend radially between an outer surface of the body and the bore. The seal shaft further includes a first group knife edge seals and a second group of knife edge seals. The first group of knife edge seals have a diameter, and a ratio of the diameter to the total cross-sectional area of the apertures is between 58.79 and 78.77.

Abstract: A fluid seal assembly (the assembly) of the present invention is disposed between an outer surface, i.e. engine block or any other part that requires application of the assembly and a rotatable member, such as, for example a shaft, wherein the assembly circumscribes the shaft and lubricated the shaft and the same rotates around the axis. The assembly includes a primary seal and a wear sleeve. The primary seal includes a casing and a seal element that contacts a sealing surface on the wear sleeve. The casing includes an outer diameter and an outer seal formed onto the outer diameter. The wear sleeve has a cylindrical portion defining an inner diameter and an inner seal formed into the inner diameter of the wear sleeve. The outer and inner seals of the present invention provide improved retention in metal bores during thermal expansion and eliminate spring back effect of the assembly after installation.

Abstract: A sealing unit for sealing a shaft to a housing includes a sealing ring with a first surface for non-rotational engagement with the housing and a flow groove including an axially aligned portion at least partially disposed in the first surface. In some example embodiments, the sealing ring includes a second surface for sealing engagement with the shaft. In an example embodiment, the sealing ring includes a rectangular cross-section, in a radial plane, with first and second axially opposed radial faces, and the flow groove includes a radially aligned portion at least partially disposed in the first and second radial faces. In an example embodiment, the sealing ring has a circular cross-section, in a radial plane, with a center point, and a depth of the groove is greater at a radial line passing through the center point than at a radial line tangent to the sealing ring.

Abstract: A seal assembly includes a first component, a second component that defines an outer surface and is located radially inward from the first component, a groove defined in the second component and arranged to face the first component, and a seal ring positioned between the first and second components and extending at least partially into the groove. The seal ring defines an outer diameter surface and a first lateral surface adjoining the outer diameter surface. The seal ring is split to define a first free end and a second free end, and the first and second free ends are configured to overlap along a split surface that extends from the first lateral surface to the outer diameter surface.

Abstract: A cross-linkable UV curable coating layer disposed over flocked fibers on an automotive component requiring improved squeak and itch resistance and freeze release is provided. The coating layer includes an elongated member having along a pre-determined portion of the member flocked fibers. The elongated member finds application as a weatherstrip or seal.

Abstract: A sealing structure for a fitting portion where an annular member is concentrically fitted to a cylindrical member to be fitted at a cylindrical part of the annular member is disclosed. The sealing structure is characterized by an elastic annular seal layer integrally provided on the backward end part of the annular member or the cylindrical member in fitting direction, by applying elastomeric agent to the backward end part and hardening it, and the elastic annular seal layer is formed such that it has layer thickness of 5 ?m to 1 mm and is interposed in a compressed state between the annular member and the cylindrical member when said annular member is fitted to said cylindrical member.

Abstract: A fluid seal assembly consists of a seal element of compliant material that is retainingly carried by a seal carrier. The seal carrier includes one or more elements of relatively rigid material defining a sealing face with a seal-receiving groove intermpting the sealing face. The seal-receiving groove has groove-defining walls each of which has a proximal end at the sealing face and a distal end. The groove-defining walls serve as seal contact surfaces. The seal contact surfaces are configured such that the seal-receiving groove narrows toward its distal end. The seal-receiving groove has a depth and a breadth suitable for accepting the seal element, with the seal element projecting past the sealing face when compressed to be in contact with the seal contact surfaces.

Abstract: A shaft sealing device comprising: a first member; a second member provided with a through-hole through which the first member passes; a sealing member configured to seal a gap between the through-hole and the first member; a rotation restricting part restricting relative rotation between the first and second members; and an axial displacement restricting part restricting the axial displacement of the sealing member. The rotation restricting part includes a first contact portion provided on the first member, a second contact portion provided on the sealing member and an inclined surface included on the first contact portion. The axial displacement restricting part includes a stopper surface. When the sealing member rotates in one direction relative to the second member by being dragged by the first member, the sealing member contacts the stopper surface to restrict the axial displacement of the sealing member.

Abstract: A seal assembly for providing a seal around a non-stationary rod includes a seal housing with a hollow body with first and second ends. The first end has a first opening to allow the non-stationary rod to pass therethrough and the second end has a second opening to allow the non-stationary rod to pass therethrough. A seal cartridge is disposed within the seal housing and radially moveable within the seal housing. A rod seal is disposed in an internal diameter of the seal cartridge.

Abstract: A centering and clamping device has a housing (1) with a drive mechanism (2) situated in its interior for actuating a clamping hook (5). The clamping hook (5) is active outside the housing (1). The clamping hook (5) engages a seal element (3) that is positioned in an opening (4) on the housing (1). The seal element (3) has a passage opening (6) for receiving the clamping hook (5). The passage opening (6) fits exactly with the clamping hook (5) in every position. The seal element (3) is mounted so that it is rotatable in the opening (4) of the housing (1). A portion of the sealing element projects, at all times, outside of the housing (1) so that the opening (4) of the housing (1) is completely closed in every rotation position of the seal element (3).

Abstract: A seal is for sealing an axial space between first and second axially-spaced members, the first member having a radial surface and the second member having an outer circumferential surface. The seal includes an annular body having inner and outer circumferential surfaces and first and second axial ends, a radial sealing surface proximal to the first end to sealingly engage with the first member radial surface, and a circumferential sealing surface proximal to the second end to sealingly engage with the second member outer surface. At least a portion of the seal body extends circumferentially about and encloses the axial space. The seal may be incorporated in a joint assembly for a linkage having first and second links, the assembly including a shaft coupled with the first link and a boss coupled with the second link, receiving the shaft, and defining an axial space in which the seal is disposed.

Abstract: A self-lubricating end seal, a pair of which are used to seal the opposite ends of the fluid reservoir of a doctor blade assembly, the top and bottom of which are enclosed by a pair of doctor blades which engage with a roller to transfer fluid to the roller. The seal includes a substantially rectilinear lubrication channel which may be divided into separate lubrication compartments packed with lubricant prior to attachment to the doctor blade assembly.

Abstract: An O-ring has a shape including a first portion that is arranged side by side with a suction port in an axial direction, a second portion that is arranged side by side with a suction port, and a third portion that connects these portions. The first portion and the second portion are arranged to be displaced from each other in the axial direction. The third portion is arranged to extend in a direction different from a circumferential direction between the suction port and the suction port when a pump body is viewed in a radial direction. Thus, the suction ports can be located closer to each other in the axial direction. Therefore, the axial direction length of the pump body can be reduced, and size reduction of a rotary pump device can be achieved.

Abstract: An encapsulated rotary seal around a rotating shaft, the seal having an outer annular body and an inner annular body. The inner annular body engages the rotating shaft and permits free rotation of the shaft while providing a liquid tight seal around the rotating shaft. The outer annular body is molded about and permanently adhered to the inner annular body, the outer annular body permitting limited non-concentric or eccentric movement of the rotating shaft engaged to the inner annular body without affecting the integrity of the seal between the rotating shaft and the inner annular body.

Abstract: A sealing assembly for use in a valve plate assembly includes a sealing ring and a retention spacer. The sealing ring has a radial ring section and an axial ring section, the axial ring section extends axially from the radial section and includes an outer diameter surface and a contact face, the contact face includes a contact surface and an annular slot, and the contact surface is located radially outward relative to the annular slot.

Abstract: A seal assembly (50, 60) for a gas turbine engine for controlling air flow between a diffuser (48) and rotor disks comprising first and second annular flange ends (52, 54) and an annular seal mid-section (56) between and operatively connected to the flange ends (52, 54). The first and second annular flange ends (52, 54) abut respective outer frame members (46) of the diffuser, whereby a fluid flow path is formed between the seal assembly (50, 60) and the rotor disks (42). The first and second end flanges (52, 54) are composed of a material having a coefficient of thermal expansion that is substantially the same as a coefficient of thermal expansion of the material of the outer frame members (46). In addition, the material of the seal mid-section (56) has a coefficient of thermal expansion that is different than that of the materials of the annular flange ends (52, 54) and outer frame members (46).

Abstract: A seal and seal assembly for providing a seal between an outer shaft and an inner shaft. The assembly includes a seal subassembly disposed between the shafts. The subassembly includes a split carbon ring, a solid outer ring, and a spring mechanism provided between the split carbon ring and the solid outer ring. The carbon ring is radially split into a plurality of segments having splits between ends of adjacent segments. The segments include a circumferential inner radius and a sealing dam on the circumferential inner radius. The solid outer ring includes a sealing face and a plurality of hydrodynamic grooves provided on a radial face. The spring mechanism may be configured to engage a portion of an outer diameter of the split carbon ring and a portion of an inner diameter of the solid outer ring and to urge the split carbon ring radially towards the inner shaft.

Abstract: A seal cartridge and a rotating nozzle assembly utilizing the seal cartridge are disclosed. The main seal member in the nozzle assembly is mounted as part of the seal cartridge. The seal cartridge is also easily removable from the rotating nozzle assembly without requiring the separate removal of the main seal member from the seal cartridge. This configuration allows a user to quickly install a new or rebuilt seal during an operation while minimizing or eliminating the necessity to manipulate small parts in the field.

Abstract: Due to increasingly strict requirements and regulations, it is becoming more and more important for piston compressors to reduce the amount of leakage of operating medium through the seal of the piston rod. Conventional seals comprising packing rings and/or packing ring combinations always have a certain amount of leakage, both during operation and when at standstill, which is why they are not usable for certain applications, or the complexity involved in such a seal increases considerably. A further problem involving the seals of piston rods relates to transverse movements by piston rods during which the sealing action of the seal must be maintained. Proposed is, therefore, a sealing arrangement according to the principle of a sealing medium barrier providing that the sealing elements 8, 9 are arranged in radial direction at a distance relative to the radial end of the recess 10 that receives the sealing elements 8, 9.

Abstract: A sealing device for a pump has a sleeve, a rotary collar, a first O-ring, a stationary collar, a mounting bracket, a second O-ring, a mounting collar and a locking pin. The rotary collar, stationary collar, mounting bracket and mounting collar are mounted around the sleeve. The first O-ring is mounted between the sleeve and the rotary collar. The second O-ring is mounted between the mounting bracket and the stationary collar. The locking pin is mounted securely between the mounting bracket and the stationary collar. The O-rings provide multi-sealing functions. The locking pin prevents relative rotation between the mounting bracket and stationary collar.

Abstract: [Problem] To provide a method for producing a rotary shaft seal that exhibits improved eccentricity-conforming properties, in which each of the initial characteristics, i.e., a torque reduction (reduced friction) and sealing properties attributed to reduced oil leakage (oil pump rate when the seal member slides), can be improved, and degradation of these characteristics can be inhibited even after friction and abrasion; and the rotary shaft seal. [Means for Solving the Problem] A method for producing a rotary shaft seal, including blending a peroxide crosslinking agent into a fluororubber polymer component including 95 to 40% by weight of a fluororubber terpolymer obtained by copolymerization with a perfluoroalkyl vinyl ether and 5 to 60% by weight of a liquid fluororubber polymer, to prepare a fluororubber composition, followed by crosslinking and molding the composition; and the rotary shaft seal.

Abstract: A seal assembly and method of forming a seal assembly provides a seal body having reduced strain during use, thereby increasing service life. The seal body may be formed within certain parameters, such as ranges of height-to-thickness and offset-to-height ratios, which have been found to reduce strain. Additionally or alternatively, the seal body may be modified from an initial configuration to a pre-strained configuration by axially displacing an inner section of the seal with respect to an outer section of the seal, which also reduces strain.

Abstract: To prevent breakage of a sealing device having a main sealing body installed within an annular installing groove (31) formed in one member (3) to slidably and concentrically contact with the other member (2) and a backup ring (12) arranged at a non-sealing space side of said main sealing body, a height (h1±?h1) of said backup ring (12) in a facing direction of a bottom surface (31a) of said installing groove (31) to the other member (2) is greater than a facing distance (L±?L) between the bottom surface (31a) and the other member (2), and said backup ring (12) has a cross-sectional shape which is symmetrical in a thickness direction thereof, and has an easily compressible part (12a) which can be compressed to the extent of the difference (x) between said height (h1±?h1) and said facing distance (L±?L).

Abstract: A curable sealant composition free from volatile organic compounds. The composition comprises a urethane acrylate oligomer present in an amount from about 20% to about 60% by weight. A liquid elastomer is present in an amount from about 20% to about 60% by weight, and at least one photoinitiator present in an amount from about 0.5% to about 10% by weight. A process for sealing a dynamic seal assembly in a housing bore is also provided.

Abstract: A sealing assembly is provided for sealing against a component. The sealing assembly comprises a seal carrier and a continuous seal element that is attached to the seal carrier at at least two discrete positions of attachment. The seal element is provided with a sealing surface that is arranged to seal against the component. The seal element is further provided with a thermal expansion slot that is located between the discrete positions of attachment and which extends from a first edge of the seal element over a portion of the width of the seal element. This allows the seal carrier and seal element to thermally expand in the length direction at different rates.

Abstract: A shaft-sealing device comprising a sealing ring having a seal secured thereto, and a protective member engaged with the sealing ring. The said protective member includes a cylindrical member having a shaft-engaging surface and a seal-engaging surface, and an annular flange extends radially away from the shaft. The shaft-engaging surface is operable to be attached to the shaft during operation of the device, and the seal-engaging surface is operable to be in sealing contact with the seal during operation of the device. The annular flange is operable to engage the sealing ring.

Abstract: A device to provide a seal between a housing for a moving element such as a drill chain, piston or the like and the moving element. The device comprising a storage well to retain seal material, the block having an outlet connecting with an aperture in a housing enabling seal material to flow into the space between a housing and the moving element and form a seal, the device further including an inlet port enabling seal material precursor to be added into the block, and pressurising means to pressurise the seal material precursor and force it out of the aperture.