Abstract: Pipeline isolation tool for sealing extrusion gaps of up to about 20% or greater includes a pair of fenced barriers (60, 160) having overlapping segments (68/70, 168/170) for restraining a seal (40). The segments expand to a pipe wall before the seal to prevent transition of seal medium over the segments and form a support wall for the seal. The support wall may include a protection ring (200). Springs (80, 180) surround each fenced barrier for returning the support system to a relaxed position. Inner rings (90, 190) are provided on sealing element facing surfaces (64, 164) of the fenced barrier for supporting the segments. The inner rings define a smooth inner guiding surface (92, 192) for the seal. The guiding surface is tilted inwardly towards the seal for resisting the sealing element during expansion and for preventing an inside diameter of the seal from expanding outwardly when compressed.

Abstract: A sliding component includes a pair of sliding members being slidable relative to each other on sliding surfaces of the sliding members. One of the sliding surfaces includes a dimple group in which dimples are arranged in a radial direction and a circumferential direction, each of the dimples having an opening portion whose shape has a long axis and a short axis orthogonal to the long axis. A dimple angle formed by a radial axis passing through an intersection of the long axis and the short axis of the dimple and a rotational center of the sliding surface and the long axis changes in at least one of the radial direction and the circumferential direction of the one of the sliding surfaces.

Abstract: The seal structure includes a shaft member, a bush having a shaft hole for passing the shaft member, a pressure-receiving member having a facing surface facing an end surface of the bush on one side in the direction of the axis, and an elastic member that presses the bush against the pressure-receiving member from another side in the direction of the axis, in which a first coating layer is formed between an outer peripheral surface of the shaft member and an inner peripheral surface of the shaft hole of the bush, and a second coating layer is formed between the end surface of the bush on one side in the direction of the axis and the facing surface of the pressure-receiving member.

Abstract: Disclosed is a sealing element and a method of manufacture. The sealing element has a sealing surface for providing a seal against a contact surface. A sintered PTFE film is coupled to the elastomeric body, and defines the sealing surface, which is of particular suitability for a dynamic seal. The sealing film comprises a lubricious particulate material.

Abstract: A sealing device has a first sealing member and a second sealing member. The first sealing member has a cylindrical part mounted on an outer member, and a lip. The second sealing member has a sleeve into which an inner member is fitted, and a flange extending radially outward. The flange has a rigid flange portion connected to the sleeve, and a circular annular elastic flange portion that adheres to the rigid flange portion. An annular protrusion is formed on an inner periphery of the elastic flange portion, and is in contact with an outer peripheral surface of the inner member. In an initial state, the inner peripheral surface of the protrusion has a cylindrical portion having an inner diameter that is less than that of the sleeve. The cylindrical portion has a length of at least 0.15 mm in the initial state.

Abstract: An assembly and method for assembling a projectile with a compact low friction high temperature shaft seal is provided. The assembly includes an outer shell, a rotating shaft inside the outer shell, and a seal attached to the rotating shaft. The rotating shaft can rotate independently of the outer shell. The seal can seal a gap between the outer shell and the rotating shaft.

Abstract: A component assembly for a motor vehicle includes a housing and an actuating element that is rotatable about an axis. The assembly also includes an actuator which is configured to cause rotation of the actuating element. The assembly further includes a rotatable shaft which extends along a shaft axis and is disposed between the actuating element and the actuator and which is coupled to the actuating element and the actuator. The shaft is guided through a first through opening in the housing. A sealing system which seals a first end of the first through opening in relation to a second end, facing away from the first end, of the first through opening against liquid media passing through is provided in a radial direction that is perpendicular to the shaft axis so as to be between the shaft and a first internal wall of the first through opening. The sealing system has a first sealing element having a second through opening through which the shaft is guided.

Abstract: A two-position handpiece coupling seal is provided. The two-position handpiece coupling seal includes a neck disposed at a first end that is configured to receive an implement. The two-position handpiece coupling seal has a first seal disposed about the neck of the two-position handpiece coupling seal. The first seal is configured to engage with a surface of a housing of a handpiece that uses the two-position coupling seal in a first position. The two-position handpiece coupling seal has a second seal disposed about a bore of the two-position handpiece coupling seal at a second end of the two-position handpiece coupling seal opposite the first end. The bore is configured to receive a driveshaft and the second seal is configured to sealingly engage with the driveshaft when the bore receives the driveshaft.

Abstract: The present disclosure is directed to a system having a first loading component and a second loading component for applying load to a device during a test of the device, the first loading component is configured to be moveable with respect to the second loading component. The system includes a seal member arranged between the first loading component and the second loading component, the seal member is adapted to engage the device during testing so as to apply a load against the device during testing and provide sealing around a cavity positioned below the first loading component and above the device.

Abstract: A highly elastic annular seal assembly includes a metal stabilator having inner and outer spaced-apart and projecting annular plates coupled to a common base and forming a U-shaped geometry, and a metal seal ring having inner and outer spaced-apart and projecting annular plates coupled to a common base and having a U-shaped geometry with a central groove. The stabilator plates are configured to be disposed within the central groove between the seal ring plates, and the stabilator plates being configured to gradually urge the seal ring plates outward as the seal ring and stabilator are brought together until a portion of the first seal ring plate contacts and forms a seal against a mating body disposed within the first seal ring plate.

Abstract: A seal assembly for a component of a turbomachine and method of assembly thereof is provided. The seal assembly includes at least one mating face positioned adjacent to the component and a seal coupled to the mating face. The seal includes an outer shell defining an interior space; an inner matrix filling the interior space comprising a plurality of unit cells comprising one or more metamaterials, wherein at least a portion of the plurality of unit cells are identical, and wherein the plurality of unit cells are repeated throughout the inner matrix; and one or more support struts extending throughout the inner matrix. The method of building the seal assembly may include selecting a first material for the outer shell and selecting the one or more metamaterials for the inner matrix based on the first material.

Abstract: An inflation control apparatus includes seal heads at ends of a container liner on a rack; a rotary inflation connector includes a static component and a rotating component. The rotating component is connected with the seal head; an inflation core tube is in the container liner, air holes are in the inflation core tube, and the two ends of the inflation core tube are connected with the static component of the rotary inflation connector respectively. A temperature and pressure sensor is in the container liner; an air compressor provides air for an air heater, the air heater introduces the heated air into an air inlet of the inflation core tube, an air outlet of the inflation core tube is connected with an air inlet of a flow regulating valve, and an air outlet of flow regulating valve is connected with an air inlet of the air compressor.

Abstract: A yarn includes elongated pieces of expanded graphite sheet and a tubular member made of knitted or braided fibers. In the tubular member, the pieces of expanded graphite sheet are twisted and packed. The yarns are knitted, or bundles of the yarns are twisted to form a gland packing.

Abstract: In an embodiment a device includes a housing with at least a first housing part, a second housing part and an interior space at least partially surrounded by the first and second housing parts and a sealing element, wherein the first housing part includes a first sealing surface and the second housing part includes a second sealing surface, wherein the sealing element abuts the first sealing surface and the second sealing surface, wherein the sealing element has an inner surface in contact with the interior space and an outer surface in contact with a surrounding atmosphere of the housing, and wherein the sealing element includes a material through which gas is exchangeable between the interior space and the surrounding atmosphere.

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: A mechanical sealing arrangement includes a rotary part, a non-rotary part and a signal processing arrangement. The rotary part includes at least a rotary slide ring and a rotary slide ring carrier, the non-rotary part including at least a non-rotary slide ring and a non-rotary slide ring carrier, and the signal processing arrangement includes at least one sensor for monitoring the operation of the mechanical sealing arrangement. A sensor ring is disposed on the non-rotary slide ring carrier, the sensor ring includes the at least one sensor and a device for transmitting measurement data from the at least one sensor for further processing.

Abstract: An apparatus has: a first member; a shaft rotatable relative to the first member about an axis; and a seal system. The seal system has: a seal carried by the first member and having a seal face; a seal housing; a seat carried by the shaft and having a seat face in sliding sealing engagement with the seal face; and a plurality of coil springs biasing the seal face against the seat face, each coil spring having a first end and a second end. The seal has a plurality of spring compartments. Each of the plurality of coil springs is partially within a respective associated compartment of the plurality of spring compartments.

Abstract: To provide a long-life compression ring without an increase in the outer peripheral abrasion near the gap regardless of the ring material or the presence or absence of the outer peripheral hard coating, in an annular compression ring having a pair of gap faces opposed to each other to form a free gap and a nominal diameter d1 equal to an inner diameter of a cylinder to which the compression ring is attached to along with a piston, a self tangential force is 5N to 50N, and a radius of curvature R1 and the nominal diameter d1 satisfy a relationship: ?0.01?(2R1?d1)/d1<0.002 where the radius of curvature R1 is that of outer peripheral arcs of gap end portions in a free shape state before the compression ring is attached to the cylinder, and the gap end portions are defined in ranges between the gap faces and positions where a center angle from a midpoint of the free gap is 35°.

Abstract: A seal includes a ceramic matrix composite ply having woven ceramic-based fibers in a ceramic-based matrix. The ceramic matrix composite ply has at least one bend formed about a bend axis and defines at least one rounded portion. A sealed assembly and a method of making a seal are also disclosed.

Abstract: Housing seals and methods seal off a housing interior from a housing exterior. The housing seals and methods comprise an elastic adhesive strip that is arranged between a first housing element and a second housing element, wherein the adhesive strip comprises a first end portion having a first edge face, and a second end portion having a second edge face, wherein the adhesive strip and is arranged between the first housing element and the second housing element in such a way that the first and second edge faces lie substantially in a plane, the adhesive strip is arranged between the first housing element and the second housing element in a closed circulation, and the first edge face of the adhesive strip is in contact with the second edge face of the adhesive strip and forms a sealing gap.