Abstract: A ring for a floating ring seal having an active face. The active face has an inner zone with a surface and an outer zone with a surface. The outer zone surrounds the inner zone coaxially. Each of the two surfaces has a structure produced with a laser.

Abstract: A hydrodynamic sealing component includes a land portion and a plurality of hydrodynamic grooves. The hydrodynamic sealing component may include sets of shallow grooves and deep grooves. In embodiments, the hydrodynamic sealing component may include alternating shallow grooves and deep grooves, or alternating pairs of shallow grooves and pairs of deep grooves. In embodiments, a hydrodynamic sealing component may include at least three sets of hydrodynamic grooves, wherein each set of hydrodynamic grooves may have a different depth, which may be configured to create or maintain hydrodynamic forces over a different operational range. In embodiments, a hydrodynamic sealing component may have a surface area of lands-to-grooves is 1:1 or less. A sealing assembly, which may include a rotor with hydrodynamic grooves on a sealing surface, is also disclosed.

Abstract: There are provided a seal fin, a seal structure, a turbo machine, and a method for manufacturing a seal fin. The seal fin suppresses leak of a fluid from a gap between a first and a second structures facing each other in a radius direction, and is formed on the first structure while keeping a clearance with respect to the second structure. The seal fin includes: a fin main body extending in the radius direction; and a protrusion being formed between a front face of the fin main body and a tip face and protruding toward an upstream side. A length of the protrusion is 1.5 times a length of the fin main body or less; an angle of the protrusion is 75 degrees or less; and a tilt angle of the fin main body is set in a range of ?60 degrees or more and 60 degrees or less.

Abstract: An annular seal element includes a seal body having a radially inner surface and at least one seal lip extending radially outward from the seal body. There is an open, radially inwardly facing circumferential channel in the radially inner surface and a garter spring is disposed entirely within the circumferential channel. Also, a seal plug including the annular seal element.

Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section, a second seal section, and (in some embodiments) a third seal section. Two or three of the seal sections are uncoupled, which allows the uncoupled seal sections to move relative to one another during relative movement between the two components. One or more spring tabs extend from the second seal section and bias the first and third (or in some embodiments, the first and second) seal sections away from one another.

Abstract: Flat gaskets for internal combustion engines are described. The flat gaskets may be used in internal combustion engines, in particular in engines with liners.

Abstract: A machine can include a radially inner component, a radially outer component, and a circumferential seal assembly between the inner and outer components. At least one (e.g., both) of the inner and outer components can be a rotor. The circumferential seal assembly can include a circumferential metallic mount, a circumferential ceramic runner, a circumferential carbon seal, and one or more spring energized seals. The spring energized seals can prevent rotational slippage between the metallic mount and the ceramic runner. The spring energized seals can be necessary to prevent rotational slippage between the metallic mount and the ceramic runner for at least one standard operating state of the machine.

Abstract: A mechanical seal includes a drive ring having an axially extending drive element and a seal face with an outer substantially cylindrical surface that is provided with a corresponding radially reduced portion that is can be engaged by the drive element, in which the radially reduced portion is a flat surface that is, in transverse section a chord, and the drive element is provided with a flat surface that can engage with the flat surface of the radially reduced portion during driving rotation of the seal face by the drive ring.

Abstract: A fluid sealing system for a rotary mechanical device includes a pillar lantern ring having two end caps with pillars or columns connecting the end caps. A bushing or bearing seal element is positioned at the bottom of the seal cavity and the pillar lantern ring is positioned adjacent the element at the flush port with compressible packing rings between the lantern ring and the gland follower. The pillars or columns are axial supports to prevent the ring from being crushed when the gland follower is tightened down. The pillars allow for a larger reservoir volume of flush in case of temporary flush loss compared to a conventional lantern ring with holes between the outer and inner groove surfaces of the lantern ring. The outer surface of the lantern ring is closely dimensioned to the inner bore of the stuffing box. In one embodiment the lantern ring is a suspended lantern ring with an inner diameter greater than the shaft to avoid any and all contact with the shaft in order to extend its working life.

Abstract: A flexible seal for sealing between two adjacent gas turbine components includes a forward end, an aft end axially separated from the forward end, and an intermediate portion between the forward end and the aft end. The intermediate portion defines a continuous curve in the circumferential direction, such that the aft end is circumferentially offset from the forward end. In other cases, the forward and aft ends are axially, radially, and circumferentially offset from one another. A method of sealing using the flexible seal includes inserting, in an axial direction, the aft end of the flexible seal into a recess defined by respective seal slots of two adjacent gas turbine components; and pushing the flexible seal in an axial direction through the recess until the forward end is disposed within the recess.

Abstract: A contactless seal intended for being fitted in a wall and a shaft passing through an opening of the wall, the seal comprising a rotary member intended for being supported by the shaft and a stationary member intended for being supported by the opening, the stationary member being inserted around the rotary member while being rotatably movable relative to same, the rotary member having an outer surface provided with at least one circumferential rib and the stationary member having an inner surface provided with at least one groove, or vice-versa. Each rib is partially inserted into a corresponding groove in order to form a labyrinthine leak path. The rotary member and the stationary member are each made up of a single part, and the rotary member and/or the stationary member are obtained by additive manufacturing.

Abstract: There is disclosed a controlled gap seal for a gas turbine engine. The seal has a ring annularly and continuously extending about a central axis. A runner that is configured for rotation about the central axis and rotatable relative to the ring. The runner has a face facing a face of the ring. The face of the ring is spaced apart from the face of the runner by a gap. Surface discontinuities are circumferentially distributed around the central axis. The surface discontinuities are located at specific locations and distributed in specific ways. A method of using the controlled gap seal is disclosed.

Abstract: The gasket includes a gasket body which is made of a monolithic piece of an elastomeric material. The gasket body has an oil opening for allowing oil to pass between the timing chain tensioner and a cylinder head. The gasket body includes at least one outer engagement feature for directly engaging with an outer wall of the timing chain tensioner to hold the gasket body on the timing chain tensioner. The gasket body also includes at least one inner engagement feature for directly engaging with an inner wall of the timing chain tensioner to further hold the gasket body on the timing chain tensioner.

Abstract: A multi-plane annular brush seal is provided. The brush seal includes a plurality of bristles attached to a front plate and a back plate. The back plate has a BP base end, a first BP inner side surface, a BP transition surface, a second BP inner side surface, and a BP tip end. The first BP inner side surface extends from the BP base end to the BP transition surface, and the second BP inner surface extends from the BP transition surface to the BP tip end. At any given circumferential position of the brush seal, the first BP inner side surface extends substantially parallel to a first plane, and the second BP inner side surface extends substantially parallel to a second plane. The first plane is skewed from the second plane by an obtuse angle.

Abstract: The present invention generally relates to an anchoring and sealing tool. In one aspect, downhole tool for use in a wellbore is provided. The tool includes a tubular having a tapered outer surface. The tool further includes an expandable annular member disposed on the tubular. The expandable member has an anchor portion. The tool further includes a seal member disposed in a groove of the expandable annular member. The seal member has one or more anti-extrusion bands, wherein the seal member and the anchor portion are configured to be expandable radially outward into contact with the wellbore as the expandable annular member moves along the tapered outer surface of the tubular.

Abstract: A seal element for connecting a first component and a second component in a fluid-tight and electrically conductive manner. In this case, the seal element has an electrically conductive support element with a holding region and a main seal region which is angled relative to the holding region. The holding region has a first contact surface on one side for contacting the first component and a second contact surface on the other side for contacting the second component. At least one respective spring tongue which is formed integrally with the support element extends from the first contact surface and the second contact surface in the direction facing away from the respective other contact surface.

Abstract: The present invention includes a system, method and kit for preventing or reducing water penetration of a gearbox, the system including: a fan or impeller coupled to the gearbox; and a hub coupled to the fan and shaped to provide a labyrinth seal that prevents or reduces water penetration into the gearbox.

Abstract: A tunable, thermally actuate, self-sealing grommet for sealing a hole in a vehicle panel through which a steering gearbox protrudes from an engine room to a passenger compartment. The grommet includes a shape memory alloy component embedded in a resin matrix. The shape memory alloy is selectively moveable from a deformed configuration toward a pre-deformed configuration upon being heated to a critical temperature from heat from an initial operation of an engine of the vehicle, which causes a sealing portion of the grommet to move from a non-engagement position to an engagement position such that the sealing portion contacts the panel to form a water-tight seal around the hole.

Abstract: The subject matter described herein relate to a segmented piston seal system. The segmented piston seal includes a first semi-circular section (FSCS) that includes a first locking structure at opposite ends of the FSCS. The segmented piston seal includes a second semi-circular section (SSCS) that includes a second locking structure at opposite ends of the SSCS. The first and second locking structures are configured to lock the FSCS and the SSCS together to form a piston seal.

Abstract: There are provided a seal fin, a seal structure, and a turbo machine that can achieve a high leak-suppressing effect and can reduce leak loss of the turbo machine. The disclosure suppresses leak of a fluid from a gap between a first structure being in a static state and a second structure rotating around an axis line and is formed on the first structure so as to extend toward the second structure while keeping a clearance between a tip face thereof on an extending direction and the second structure. The first structure and the second structure face each other in a radius direction with the gap inbetween. A plurality of hollows opening at a tip on the extending direction are arranged along a circumference direction in parallel with each other on a front face facing an upstream side of a flow direction of the fluid.