Abstract: A cylinder head gasket for an internal combustion engine includes a substantially flat center plate and first and second spring plates disposed on opposite sides of the center plate. The center plate has an opening therein. Both the first and second spring plates have openings therein aligned with and smaller than the opening of the center plate. The first and second spring plates thereby define wire ring retention portions of the spring plates extending radially inwardly from the edge of the center plate opening. A wire ring having a wire diameter greater than a thickness of the center plate is disposed between the ring retention portions of the spring plates. The spring plates have a substantially wave-like concentric embossment encircling the opening in each and radially proximate thereto. Clamping the gasket between two sealing surfaces forms a primary combustion seal at the wire ring, and forms a secondary combustion seal beyond the ring at the embossments.

Abstract: A metal laminate gasket of the invention is engaged with an engaging projection of an engine part for immovably locating the gasket on the engine part. The gasket is basically formed of first and second metal plates laminating together. The first plate includes at least one first hole and at least one engaging portion extending into the first hole. The second plate is situated above the first plate, and includes at least one second hole larger than the diameter of the engaging projection and at least one restricting portion. When the gasket is urged against the engine part, the engaging portion deforms and engages the engaging projection, while the restricting portion restricts bending strength of the engaging portion. The gasket is not accidentally disengaged from the engaging projection.

Abstract: A mechanical seal assembly having a face ring disposed within an axially-opening recess associated with a support ring. The support ring includes a sleevelike shroud which externally surrounds and maintains the face ring in concentric relationship. A separate retainer ring cooperates between the shroud and face ring to axially and positionally secure the face ring to the support ring. The retainer ring includes an annular ring part which projects radially inwardly so as to radially overlap a part of the exposed face of the face ring to effect axial securement thereof to the support ring. The retainer ring in addition has an axially-extending sleeve part which projects axially and in surrounding relationship to the shroud. This sleeve part has a press-fit engagement with the shroud to create a fixed engagement of the retainer ring to the support ring.

Abstract: A spaghetti seal for use in a surface to be sealed to a confronting surface and having a pair of projecting beads for sealing against the confronting surface. The beads are molded to incline inwardly towards each other or when installed are caused to incline towards each other. Under load, the beads are forced in contact with each other in a controlled manner. When in contact they behave essentially as a single bead to provide increased stiffness and more effective sealing.

Abstract: A sealing device having a body section and two anti-extrusion sections is disclosed, the body section being disposed between the anti-extrusion sections. The body section includes sealing surfaces for enclosures in which the sealing device is located. The anti-extrusion section prevents extrusion of the body section.

Abstract: A sootblower includes a supply tube for delivering fluid to a concentrically mounted lance tube. The lance tube reciprocates into and out of a boiler delivering fluid to clean the inside surface. Deformable packing between the inside surface of the lance tube and the outside surface of the supply tube prevents the escape of the cleaning fluid from the system. A follower gland is biased into engagement with the packing to maintain its seal when the packing wears. The bias is provided by a plurality of coil springs trapped between a pair of plates, flanges or washers suitably connected to the gland. A plurality of covered apertures in one of the flanges allows the insertion or removal of some of the springs to provide the desired degree of compression to the packing.

Abstract: A seal assembly interposed annularly between the inner and outer rings of a bearing assembly to seal an annular cavity formed between the inner and outer rings of the bearing assembly, the seal assembly having an annular seal member fitted onto the inner peripheral surface of the outer ring, a first annular seal lip, and a second annular seal lip, the first annular seal lip being in elastic-contact with the sidewall of an annular groove formed in the inner peripheral surface of the inner ring. The first annular seal lip has a radial length and an axial thickness satisfying a ratio (A/B) of the radial length (A) to the axial thickness (B), the ratio (A/B) being in the range of not less than 4.5 and not more than 7.0 to obtain a moderate rigidity capable of following the relative movement of the inner and outer rings.

Abstract: This metal gasket for chain case-carrying engines is capable of reliably preventing the entry of an oil into height different parts, which occur on abutting surfaces of a cylinder block and a chain case, even when the oil deposited on the chain case scatters during a movement of a chain, and improving the reliability thereof owing to its durability. This metal gasket has first and second elastic metal plates provided with beads extending along an opening, in which the chain moves, and an intermediate plate provided with bores packed with seal members for sealing the height different parts occurring at the abutting surfaces of the chain case and cylinder block. The second elastic metal plate is provided with recesses formed by cutting out the portions thereof in which the seal members are positioned.

Abstract: An improved mechanical seal of the cartridge-type providing an inboard compressed packing seal between dual shaft sleeves and the pump shaft, compressed between the shaft sleeves by action of a plurality of radially arranged set screws. A sharp edge loaded gasket arrangement between axially stacked components which make up the rotary face, the stationary face, the bellows assembly and gland is provided. The axially stacked arrangement is reversible to accommodate either a stationary bellows or rotary bellows application. An annular channel between inner and outer shaft sleeves provides a flow channel for quench fluid flowing annularly inboard to the seal faces and outboard to a quench fluid exit, providing for a uniform annular quench flow.

Abstract: A cylinder head gasket includes first and second opposite sheet metal cover plates; a combustion chamber opening being formed by aligned apertures in the cover plates; and first and second beads provided in the first and second cover plates, respectively. Each bead has a convex side; the convex sides of the first and second beads are oriented toward one another. The first and second beads are in an orthogonal alignment with one another and surround the combustion chamber opening. The cylinder head gasket further has a spacer plate positioned between the first and second cover plates and is contacted by the convex side of the first and second beads. The spacer plate has an aperture which is in general alignment with the apertures in the cover plates and is defined by an edge face of the spacer plate. There is further provided a separate annular insert positioned in the aperture of the spacer plate.

Abstract: A damper seal (10) and method of sealing and damping a rotating shaft (12) is provided with a stator housing (14) and at least two sealing blades, an upstream sealing blade (16) and a downstream sealing blade (18). There are at least two partitioning walls (20) disposed between the sealing blades (16,18) and attached to the stator housing (14). The clearance between the downstream sealing blade (18) and the shaft (12) is greater than the clearance between the upstream sealing blade (16) and the shaft (12). The damper seal (10) restricts the flow of fluid from regions along the shaft that are at different pressures and damps vibratory or whirl motion of the shaft.

Abstract: Apparatus for providing a mechanical planar seal, as for example for use with a centrifugal pump having a rotating shaft, includes a primary seal formed of a movable first part rotatable with the shaft and a fixed second part or seat, a secondary seal axially spaced along the shaft from the primary seal, an inlet for flushing liquid, an outlet for the flushing liquid and for pump medium that leaks through the primary seal, a collection chamber defined between the primary and secondary seals for flushing liquid and leaking pump medium, and a drain passage connecting the collection chamber and outlet. The collection chamber is divided into at least two portions in liquid communication with each other and with the drain passage by at least one predeterminately-configured wall so as to assure that the flushing liquid is maintained between the primary and secondary seals for an extended period of time for advantageously efficient use of the flushing liquid in lubrication and cooling of the primary seal.

Abstract: In a composite sealing material having an inner portion and a carbon outer portion, a bulk density of the carbon outer portion is set in a range of 0.3.about.2.0 g/cm.sup.3, preferably in a range of 0.5.about.1.5 g/cm.sup.3, or fiber members are mixed in the carbon outer portion, or an oil layer is arranged on the carbon outer portion, or an organic layer or an inorganic layer is arranged on the carbon outer portion, so as to improve sealing properties of sealing members formed by using the composite sealing materials.

Abstract: A sealing system for heat exchangers of the type having a plurality of vertically positioned heat tubes extending through a heat tube sheet for exchanging heat between the interior of the plurality of heat tubes to the surrounding atmosphere, the sealing system including a first outer ring having a wall portion, terminating in an upper face, and defining an annular space between the lower end portion of the outer ring and the heat tube and tube sheet; a high nickel metal inner ring, positioned within the annular space surrounding the heat tube and resting on the tube sheet; a soft metal casing partially housing the high nickel inner ring so that when force is applied downward on the first outer ring, the annular space is reduced sufficiently to force the high nickel ring and the soft metal casing into a sealing relationship between the heat tube and the tube sheet, while allowing for vertical movement of the heat tube; the outer ring further defining a means to prevent the high nickel ring and the soft metal

Abstract: A metal laminate gasket of the invention is used for an internal combustion engine formed of a cylinder head and a cylinder block. The gasket is basically formed of two metal plates laminated together. The gasket has a rectangular shape, and includes a plurality of cylinder bores arranged in a longitudinal direction of the gasket, and a plurality of bolt holes arranged to surround the cylinder bores. The gasket has two lateral side portions, each being defined between a lateral edge and a line linking centers of bolt holes located adjacent to the lateral edge. Edge support shims are installed between the plates at the lateral side portions to substantially completely support tightening pressure of the bolts applied to the lateral side portions. Thus, deformation of the cylinder head is prevented, and substantially equal tightening pressure can be formed around the entire cylinder bores.

Abstract: The sealing device has a casing and a shaft extending through the casing. A bearing housing with an outer ring bearing is received in the casing. The shaft is rotatably supported in the bearing housing. A slide ring sealing unit including a slide ring, a counterring, and at least one compression spring is provided. The slide ring is forced by the compression spring against the counterring. A centering ring with centering elements is provided. The slide ring sealing unit is connected with the centering ring to the bearing housing, and the slide ring sealing unit is centered at the bearing housing with the centering elements.

Abstract: Split component to be held in a fixed position on a shaft includes a component member having at least two portions with opposite ends that mate together in sealing engagement, and a plurality of resilient holding segments positioned between the inner surface of the component member and the outer surface of the shaft for holding the component member in a fixed position on the shaft. By compression, the holding segments provide a resiliency-induced resistant force sufficient to prevent movement of the component member in an axial direction and in a circumferential direction relative to the shaft. In a preferred embodiment, each holding segment is a metal spring member extending less than 180.degree. circumferentially around the outer surface of the shaft and having a continuous concave surface directed toward the outer surface of the shaft with gripping edges along opposite sides of the concave surface.

Abstract: An improved oil seal is provided for sealing passage of rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved oil seal comprises a slinger rotor mounted on the shaft for rotation therewith. The slinger rotor includes a radially outwardly extending slinger ring with radially open slinger ports formed therein, in combination with an axially projecting centrifuge sleeve defining an internal tapered centrifuge surface disposed in close running clearance with an axially projecting cylindrical wall segment on the end wall. During shaft rotation, the centrifuge surface pumps oil in a direction away from the end wall to the slinger ring for discharge through the slinger ports to the interior of the bearing housing.

Abstract: A gas turbine abradable seal is prepared by plasma spraying an oxidation resistant metallic material and boron nitride. The resultant structure comprises a metallic matrix encompassing a lubricating amount of boron nitride, with porosity of less than about 15 percent and a fabricated surface roughness of less than about 600 microinches. The reduced surface roughness and substantially reduced permeability of this seal provide substantially enhanced engine efficiency, and improved durability.

Abstract: A spindle motor comprising a stationary member, a hub rotatably supported on the stationary member via a pair of bearing members, and a magnetic fluid seal disposed outwardly of at least one of the pair of bearing members. A conduit hole is provided to conduct between an annular space stipulated by the stationary member, the magnetic fluid seal, the rotor and the other of the bearing member and the inside of the motor. Furthermore, a magnetic fluid holder means in the magnetic fluid seal is improved.