Abstract: The lip-type seal of the present invention is a lip-type seal with which the outer periphery of a rotational shaft (S) supported by a predetermined housing (H) is sealed. The lip-type seal is made up of a first annular reinforcing member (11) and a first sealing member (12). The first reinforcing member (11) includes a wall surface part (11a) defining a hole through which the rotational shaft (S) is passed and a cylindrical part (11b) bent from the outer edge of the wall surface part (11a). The first sealing member (12) includes an annular base (12a) that is joined to the housing (H), a first lip part (12b) that extends almost conical from the base (12a) inwardly in the radial direction and that comes into contact with the rotational shaft (S), and an annular concave part (11c) formed on the base (12a) so as to detachably fit the cylindrical part (11b). Accordingly, a desired sealing capability can be secured, and the components can be easily assembled, disassembled, and recycled.

Abstract: A self-cooling ferrofluid seal includes a housing having a housing case and an external pole piece integrally connected to the housing case where the housing case has a plurality of heat dissipating surfaces, a magnetic circuit within the housing formed in conjunction with the external pole piece, a rotatable shaft having one or more fan blades where the rotatable shaft is coaxially aligned within the housing, and a quantity of magnetic fluid between the rotatable shaft and the external pole piece forming a ferrofluid seal.

Abstract: A sealing device has a seal ring and a cylindrical bellows portion connected to the seal ring. The cylindrical bellows portion has a corrugated outer surface. A turbocharger utilizing the sealing device has a turbine wheel connected to a shaft and a compressor wheel connected to the shaft. The sealing device is sealingly engaged with the shaft. The sealing device provides a seal between a bearing housing of the turbocharger and either a turbine housing or a compressor housing.

Abstract: An annular gasket for affecting a watertight seal between two sections of corrugated pipe. The gasket comprises a seating portion dimensioned to fit within an annular recess in one of the mated sections of corrugated pipe, and a sealing portion integrally molded with the seating portion. The sealing portion includes a first shoulder portion, a second shoulder portion, and an arcuate surface extending between the first and second shoulder portions. The mass of the seating portion is less than the mass of the sealing portion.

Abstract: Improved inflatable packers are provided. A packer may be constructed from hybrid structures including slat structures and weave structures. A packer may include a bladder and a cover, with a plurality of slats disposed therebetween, and/or a weave structure or anti-extrusion layer disposed therebetween. The slats may vary in width and thickness, and be provided with a plurality of reinforcement members. The reinforcement members may be longitudinally and/or transversely disposed in the slats. One or more of the various components of the packer preferably include a fiber, a wire, a cable, a nanofiber, a nanotube, and/or a nanoparticle modified elastomer. Anchors may be attached to or embedded in the outer cover. The packer may include a carcass having an end coupling including a plurality of slats. Improved packer cups are also disclosed, and preferably include a body member reinforced with a nanotube or similar material.

Abstract: This invention provides a device for use with sealing an orifice in a wall, comprising: a first annular member having an interior radius and a radial mating surface; a second annular member disposed on the first annular member opposite the radial mating surface and being axially aligned with the first annular member; a plurality of mounting portions disposed on the interior radius of the first annular member such that each mounting portion is substantially flush with the radial mating surface, wherein each mounting portion has a fastener orifice; and, an alignment pin disposed on at least one of the plurality of mounting portions, the alignment pin is substantially parallel to an axis of the first annular member. This invention also provides a device for use with sealing orifices wherein the alignment pin includes a spring biased securing end.

Abstract: A sealing arrangement for sealing a leakage gap between relatively moveable parts in a flow path between a region of high fluid pressure and a region of low fluid pressure comprises a sealing member having an upstream surface, a downstream surface, a radially outer surface and a radially inner surface, the sealing member being in communication with a housing via a resilient element. The resilient element is fixedly joined to the upstream surface of the sealing member such that during operation both the radial force induced on the sealing member by fluid flowing axially into and circumferentially over the radially inner surface and the axial force induced on the sealing member because of a pressure difference across the sealing member is resisted by the resilient element.

Abstract: A seal for restricting leakage of a fluid from a first chamber, through a gap between two components, to a second chamber is provided. A slot is formed in each of the two components. The slots face one another and are open to the gap. Each slot contains a longitudinal axis, an upstream surface proximate the first chamber and a downstream surface proximate the-second chamber. Disposed in the slots and spanning the gap is a bridging assembly comprising first and second bridging elements. Each bridging element contains a sectional profile, transverse to the longitudinal slot axis, that is wave shaped. The bridging elements further contain a crest portion disposed between two trough portions with the crest portions nesting together. When installed, the trough portions are disposed in the slots and the crest portions are disposed in the gap.

Abstract: A static gasket assembly having a grid-like carrier (10, 10?) formed as a mesh of overlapping strands. Openings (16-22) are created strategically in the carrier (10, 10?) with the severed ends of the strands forming cantilever stems (12) projecting inwardly. Any one of a variety of specially configured sealing elements (24, 30, 32, 36, 38) are pressed into the respective openings (16-22) with the cantilever stems (12) engaging a peripheral groove (26) in each sealing element to retain the respective sealing elements in position. The gasket assembly is then placed over a surface to be sealed (40) and the carrier (10, 10?) can either be removed, or remain as a permanent fixture of the gasket assembly.

Abstract: A seal rubber 3 is placed in a first peripheral groove 2 formed in one main surface 1A of an approximately flat-plate-shaped metal body 1. A second peripheral groove 4 and multiple communicating holes 5 to communicate between the second peripheral groove 4 and the first peripheral groove 2 are formed in the other main surface 1B of the metal body 1. A retaining rubber 6 disposed in the second peripheral groove 4, the seal rubber 3, and a bridge rubber 7 disposed in the communicating hole 5 are integrated. The first peripheral groove 2 is made to be a dovetail groove, the second peripheral groove 4 is made to have an inner surface inclined to reduce the groove width from a groove opening side to a groove bottom surface side, and the groove width D4-2 of the groove bottom surface and the inner diameter D3 of the communicating hole 5 are made to be substantially the same.

Abstract: The tip edge of a second seal lip of an elastic member constituting a seal ring is in sliding contact with an outside face of a slinger. The seal ring and the slinger are pre-assembled and then installed between an inner peripheral surface at an end of an outer ring and the middle of an outer peripheral surface of a rotating shaft. The first and second seal lips are protected by the slinger prior to assembly. As a result, the first and second seal lips constituting the seal ring installed with the slinger can be installed without damage, using an industrial method.

Abstract: A metal laminate cylinder head gasket has a first metal plate having a first notched portion, a second metal plate having a folded projection extending therefrom, and a middle metal plate having, adjacent to the first notched portion, a second notched portion. The middle metal plate is clamped between the first metal plate and the second metal plate. The folded projection is located such that in an area defined by the first and second notched portions, the first and middle metal plates are clamped by the folded projection. The gasket combines the function of a shim for adjusting the thickness of the gasket, and the function of affixing the metal plates.

Abstract: A manifold gasket includes a carrier frame with a plurality of media-conveying openings corresponding to openings communicating between two parts to be clamped, such as an intake manifold and a cylinder head. Elastomeric sealing material is molded to the carrier frame about the openings to seal the openings when clamped. A compression limiting device is disposed on the carrier frame and is isolated from direct contact with the carrier frame by intervening elastomeric bonding material to limit compression of said elastomeric sealing material when the gasket is clamped between the head and block. The elastomeric bonding material renders the compression limiting device free-floating relative to the carrier frame.

Abstract: The invention relates to an oil control ring for pistons of internal combustion engines. The aim of the invention is to provide an improved shape-adaptation capacity in comparison to prior art, with a tangential force that enables the ring to guarantee low friction and also low oil consumption during the operation of the engine. To achieve this, the inventive oil control ring comprises a solid bearing surface that lies against the cylinder wall, in addition to parallel ring flanks, between which a radial recess that runs around the periphery is configured in the rear of the ring, said recess being designed to receive a coil spring. The peripheral region of the ring flanks is provided with undulating end faces that face towards the rear of the ring. Said undulating end faces of the upper and lower ring flanks are offset out of phase with one another.

Abstract: An improved seal retainer for an undersea hydraulic coupling member, which utilizes pressure energized metal seals to maintain fluid integrity. One or more metal seals designed to have a press or interference fit are utilized in such a way that pressurized fluid trying to escape past the seal actually helps to pressure energize the seal to ensure a better seal.

Abstract: A staged seal assembly having a plurality of staged seals and an external pressure breakdown device connected to the seal assembly and configured to be connected to an external device, wherein each staged seal includes a shaft seal and a seal bypass. The seal bypass includes a pressure breakdown device and directs a portion of fluid through the pressure breakdown device bypassing the respective shaft seal. The staged seal assembly may be configured to be installed in a new installation or replace an existing, seal assembly while substantially maintaining equal pressure reductions across each staged seal and substantially matching the fluid parameters of an external device originally connected to the seal assembly being replaced.

Abstract: An anti leakage device of lubrication oil for a fan includes a hub seat, a sleeve and a hub. The sleeve is provided on the hub seat and has a bearing therein to form an oil storage part for receiving lubrication oil. The hub is provided on the hub seat and has an annular recess at the inside thereof for being inserted with the sleeve. Hence, leakage from the oil storage part can be avoided by way of provision of the annular recess.

Abstract: A metal gasket for an internal combustion engine includes a first metal plate with a folded portion; a ring member with a sandwiched portion having a sealing bead and an extension portion, with the sandwiched portion being sandwiched in the folded portion to provide a primary sealing portion; a second metal plate laminated to the folded portion of the first metal plate so as to sandwich the extension portion to provide a secondary sealing portion; and a third metal plate sandwiched between the first metal plate and the second metal plate in a portion of the gasket separate from the sandwiched extension portion. In the event that the cylinder head lift becomes greater than the following capability of the sealing bead in the primary sealing portion, the secondary sealing portion provides excellent following capability relative to the lift.

Abstract: A gasket having a layer including at least one combustion opening and a wave area located on the layer is disclosed. The wave area includes a first wave and a second wave. The first wave is proximate the combustion opening. A flat portion near the second wave includes a first end and a second end. A full bead is located next to the second end of the flat portion whereby a lower surface of the flat portion is above the lower projecting surfaces of the wave area.

Abstract: A cooktop gasket includes a sealing body having a stem extending from an upper portion of the gasket and terminating in a retention knuckle. A base is provided that includes a support portion integrally connected to a locking portion, the locking portion having an inner leg, an outer leg, and a retention channel positioned between the inner and outer legs. The retention channel is capable of the receiving the stem of the sealing body when the sealing body and the base are in an engaged position to maintain the relative positions of the base and sealing body. A sealing cam on the stem biases the inner leg toward a cooktop edge to seal against the edge of the cooktop.