Abstract: The invention relates to a gas-lubricated mechanical seal arrangement using a gaseous fluid as a barrier medium, comprising a mechanical seal comprising a rotating slide ring (2) and a stationary slide ring (3) defining a seal gap (4) therebetween, a biasing means (5) biasing the stationary slide ring (3) towards the rotating slide ring (2), a fluid space (6), into which the gaseous fluid can be introduced, a first slide ring carrier (20) for retaining the rotating slide ring (2), the first slide ring carrier (20) having a first axial surface (21), a second slide ring carrier (30) for retaining the stationary slide ring (3), the second slide ring carrier (30) having a second axial surface (31), the second slide ring (30) and the stationary slide ring (3) being arranged together on a displacement surface (32) so as to be displaceable in the axial direction (X-X), an axial gap (7), which is limited by the first axial surface (21) and the second axial surface (31), and an antechamber (8) which is formed at the s

Abstract: An axial shaft seal ring has a holding portion and a sealing portion, which are connected to one another via an elastically deformable sealing membrane. The sealing membrane has a plurality of spatial structure areas R in the circumferential direction of the shaft seal ring, which serve as a circumferential reserve of the sealing membrane. As a result of a centrifugal force FR accompanying a rotational movement of the shaft seal ring around the central axis thereof and acting on the sealing membrane, an expansion of the sealing membrane in a radial direction is effected at least in the spatial structure areas, in such a manner that the sealing portion is acted upon by the sealing membrane with an axially directed pull force FZ, which is directed opposite to the pressing force FA.

Abstract: A gasket includes a reinforcing body made of a resin film, a one-side gasket body on one surface of the reinforcing body, and another-side gasket body on another surface of the reinforcing body. The reinforcing body has, between both gasket bodies, a three-dimensional shape in which the resin film is bent. The one-side gasket body includes an inversely-tapered engaging convex portion protruding toward the other-side gasket body, the reinforcing body includes a deformation portion as the three-dimensional shape deforming along a shape of the engaging convex portion, and the other-side gasket body includes an inversely-tapered engaging concave portion embedding therein the engaging convex portion and the deformation portion. At least one of the one-side gasket body and the other-side gasket body includes a flat surface-shaped seal surface, and the reinforcing body has a convex shape as the three-dimensional shape protruding toward the flat surface-shaped seal surface.

Abstract: A piston seal assembly for a gas turbine engine includes a seal composed of a nickel-based superalloy; a component in contact with the seal and defining a seal-counterface; and a coating on the seal at the seal-counterface, wherein the coating is a metal alloy binder phase and a hard particle phase distributed through the binder phase.

Abstract: [Problem] To provide a sealing device having high pressure resistance and durability for a reciprocating shaft. [Solution] A sealing device comprising an oil seal member and a dust seal member. The oil seal member and the dust seal member each comprise a rigid ring provided inside a shaft hole and an elastic ring attached to the rigid ring, wherein the elastic ring has formed thereon a lip that slidably contacts a reciprocating shaft. The rigid ring of the dust seal member is detachably fitted in the rigid ring of the oil seal member. The sealing device further comprises another rigid ring provided between the elastic ring of the oil seal member and the elastic ring of the dust seal member in a direction parallel to the axial direction of the reciprocating shaft. This rigid ring is detachably fitted in a concave portion formed radially inward of the rigid ring of the dust seal member and reinforces the elastic ring of the dust seal member.

Abstract: A metal airtight seal with bidirectional face, self-energizable by pressure, with axisymmetric or non-axisymmetric configuration, has teeth guided at acute angles, both towards the center of the ring and outside, radially. This geometry may provide the airtight seal the characteristic of being self-energizable by fluid pressure and providing bidirectional sealing, both to the internal pressure and to the external pressure. Furthermore, second element of the airtight seal has a course stopper, to limit the deformation of said metal airtight seal. First and third elements of the airtight seal provide the airtight seal high resistance against internal and external pressure, due to the control of radial slacks.

Abstract: A mechanical seal assembly comprising a gland assembly having first and second sensor openings and a sleeve assembly disposed about a shaft and disposed within the gland assembly. A first RFID sensor is disposed within the first sensor opening and a second RFID sensor is disposed within the second sensor opening, where the first RFID sensor is a high frequency RFID sensor and the second RFID sensor is an ultra high frequency RFID sensor.

Abstract: The invention relates to a mechanical seal assembly comprising a mechanical seal (2) comprising a rotating mechanical seal (20) and a stationary mechanical seal (21) defining a sealing gap (22) therebetween, and a one-piece safety seal (3) provided as a redundant seal in the event of failure of the mechanical seal (2) and adapted to seal at a rotating component, the safety seal (3) comprising a base body (30) and a sealing area (31) projecting from the base body (30) in the axial direction (X-X) and being flexible, a thickness of the sealing area (31) in the radial direction being smaller than a thickness of the base body (30) in the radial direction, and the safety seal (3) being arranged in a stationary manner and comprising a sealing surface (32) on an inner circumference.

Abstract: Shaft seal for sealing a shaft against a housing of a motor vehicle, comprising a shaft sealing ring having a sealing lip for sealing the shaft against the housing, characterised in that a labyrinth seal is arranged upstream of the shaft sealing ring on the oil side thereof.

Abstract: Provided is a sliding component with less fluid leakage. A sliding component has a pair of sliding members at least one of which has positive pressure generation mechanisms and negative pressure generation mechanisms formed at a sliding surface of the sliding member. The negative pressure generation mechanisms are arranged on a low-pressure fluid side with respect to the positive pressure generation mechanisms. Adjoining two of the negative pressure generation mechanisms in a circumferential direction overlap with each other in a radial direction.

Abstract: A sealing membrane assembly including a flange having a body with a through passage. A first sealing membrane defines a first flexible panel with a first axial sealed opening extending therethrough. The first axial sealed opening extends at an acute angle. A second sealing membrane defines a second flexible panel with a second axial sealed opening extending therethrough. The second axial sealed opening extends at an obtuse angle. The first and second sealing membranes are secured relative to the flange such that the first and second axial sealed openings crisscross one another and the first and second sealing membranes seal the through passage except through the first and second sealed openings.

Abstract: A seal that enables an enclosure to be sealed and to keep an air pressure balance between an internal space within the enclosure and an external space outside the enclosure in such a way that water ingress into the enclosure is hindered in a predictable manner. This is accomplished by providing a seal having at least one small diameter tube with at least an inner surface being hydrophobic, oleophobic or omniphobic. The seal is mounted in the enclosure between the inner and outer space. To further avoid small particle contaminants to enter and go through the at least one small diameter tube, it is preferable to have a small diameter tube with curves and bends, and it will still allow an airflow through it if there is an air pressure imbalance.

Abstract: A segment seal is configured to seal an annular clearance between a housing and a rotary shaft in a state in which a pair of seal rings are attached in an unrotatable state between one end portion of the housing and a support member attached to the housing so as to be opposite to the one end portion in an axial direction. The segment seal includes an anti-rotation member placed not to rotate relative to the housing or the support member, provided with a pair of raised portions fitted to the pair of seal rings to prevent rotation of the pair of seal rings, and configured such that at least one of the raised portions has a shape fittable only to either one of the seal rings.

Abstract: Sealing device for a wheel hub unit is disclosed herein, wherein the sealing device being able, during use, to form a static seal for protecting the wheel hub unit from any environmental pollutant and being provided with a screen, which is engaged with a collar of the wheel hub unit and has a bottom wall, a cylindrical side wall integral with and more or less perpendicular to the bottom wall. The sealing device is designed and structured to protect the wheel hub unit from any environmental contaminant that the wheel hub unit may be exposed to during usage.

Abstract: Systems and methods are presented for sealing a higher pressure fluid cavity from a lower pressure fluid cavity in a rotating machine. The cavities are at least partially disposed between a rotatable shaft and a housing. The seal assembly comprises a runner mounting assembly, a circumferential ceramic runner, a carbon seal ring, and an annular seal member. The carbon seal ring is sealing engaged with the housing and at least a portion of the runner to thereby form a boundary between the higher pressure fluid cavity and the lower pressure fluid cavity. The annular seal member is coupled to the housing axially displaced from the seal ring in the lower pressure fluid cavity. The seal member has a curvilinear face surface that engages the runner.

Abstract: Piston ring having an endless base ring and sealing ring have a radially outwardly directed base ring face side. The sealing ring has a radially inwardly directed, circularly running sealing ring inner side with three tangential cuts separating three sealing ring segments are arranged in a circumferential direction (U). The base and sealing rings are arranged in succession in a longitudinal direction (L). A top ring is arranged to adjoin the sealing ring having a top ring has a radially outwardly directed top ring outer side and a radially inwardly directed top ring inner side. The top ring has, on the side opposite the sealing ring, a radially running return flow channel extending radially, the sealing face side protrudes in a radial direction beyond the top ring outer side and the base ring face side. The base and the top rings have a greater tensile strength than the sealing ring.

Abstract: A coating agent for a rubber-coated cylinder head gasket contains a lubricant and a urethane resin. The lubricant is unsintered polytetrafluoroethylene resin particles having an average primary particle size of 1 ?m or less. The amount of the unsintered polytetrafluoroethylene resin particles in a solid content is 30 to 80% by volume. The present invention provides a coating agent for a rubber-coated cylinder head gasket that can form a coat that is highly wear-resistant under high contact pressure and high temperature conditions and with which a rubber layer is less likely to stick to the seal face of the cylinder block or the cylinder head after the use under high contact pressure and high temperature conditions, and a cylinder head gasket obtained using the coating agent.

Abstract: A hydrostatic seal assembly includes a primary seal configured to maintain a selected gap between the primary seal and a rotating component. The primary seal includes a seal support, a seal shoe, and one or more seal beams operably connecting the seal support to the seal shoe. The one or more seal beams are configured as spring elements integral with the seal shoe to allow radial movement of the seal shoe relative to the seal support. A seal carrier including a radial outer wall is configured to radially position the primary seal. The seal carrier is configured for a non-contact relationship with the seal shoe during operation of the hydrostatic seal assembly.

Abstract: A face seal assembly including a thermal fluid circuit, a turbomachine including the face seal assembly and a method of operating the turbomachine are disclosed. The face seal assembly includes a seal ring including a seal bearing face, at least one internal cavity including a cavity inlet and a cavity outlet. The face seal assembly further including a fluid inlet channel in fluid communication with the cavity inlet of the at least one internal cavity and a pressurized fluid and a fluid outlet port in fluid communication with the cavity outlet of the at least one internal cavity. The at least one internal cavity, the fluid inlet channel and the fluid outlet port define a thermal fluid circuit providing thermal management of the seal ring. In the turbomachine, the face seal assembly is disposed between a stationary component and a rotating component including a rotating component bearing face.

Abstract: A seal structure includes a ring-shaped seal member. The seal member is disposed in a seal groove. The case includes a low-pressure lateral face in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with a shaft axial direction of the shaft and passing through a center line of the shaft. The seal member includes a first protruding portion. The first protruding portion protrudes from a main portion having a bottom face in contact with the low-pressure lateral face, and has a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side. The first protruding portion includes a tip. The first protruding portion includes a contact region in contact with the shaft. The tip is closer to the low-pressure side than the contact region is.