Abstract: A gasket for sealing an intake manifold of an internal combustion engine, includes a plastic body defining substantially co-planar surfaces that define top and bottom surfaces of the gasket. Each of a plurality of air intake apertures includes an interiorly molded circumferential elastomeric edge bead. Each aperture edge includes a circumferential array of small openings for mechanical securement of the elastomeric bead to the plastic carrier, and each opening fills with elastomer upon the overmolding of the bead to the edge during manufacture. The gasket also includes primary and secondary compression limiters, formed of powdered metal in described embodiment, located immediately adjacent bolt holes and symmetrically between air intake apertures, respectively. Finally, the gasket includes flexible locator grommets for assuring positive alignment between the cylinder head and intake manifold.

Abstract: A unitary boundary gasket adapted for sealing between flanged portions of two axially mated surfaces of rigid metallic members, such as between an engine block and an associated engine oil pan. In one preferred form, the gasket has a rectilinearly shaped annular body, and is formed of a one-piece radially outermost rigid metallic carrier having a first axial thickness, and adhesively bonded to a one-piece radially innermost elastomeric sealing body. The sealing body, bonded to the metallic carrier at the radially innermost edge of the carrier, includes a plurality of spaced apertures adapted for accommodating passage of bolt members for fastening said flanged portions together about the gasket body. Intermediate the apertures are longitudinally extending waffle pattern regions designed for sealing against leakage of fluids between said apertures. In one preferred form, a plurality of sealing beads extend medially between each waffle pattern region.

Abstract: The invention relates to a metallic cylinder-head gasket for an internal combustion engine which has a cylinder block having adjacent combustion chambers and has a cylinder head screwed to said cylinder block, with at least one cover plate made of elastic metal and a carrier plate, which are arranged one above the other and are provided with a plurality of combustion-chamber orifices corresponding to the combustion chambers of the internal combustion engine, a bead being provided around each combustion-chamber orifice at a distance from the latter, so as to leave a sheet-metal edge portion in the orifice-edge region, the spring stroke of said bead being limited by at least one deformation limiter arranged concentrically to the bead in the axial region of the sheet-metal edge portion and/or in the axial region radially on the outside in relation to the bead, a support element formed separately from the deformation limiter being provided in the axial region of the deformation limiter at a distance from the edge

Abstract: A seal arrangement for providing a seal between a nuclear reactor in-core instrument housing and an instrument contained within the housing includes a lower seal assembly surrounding an outer portion of the in-core instrument housing, an upper seal assembly surrounding an outer portion of the in-core instrument, a seal housing enclosing the lower and upper seal assemblies, and lower and upper compression assemblies positioned on respective ends of the seal housing. The compression assemblies each include a drive nut and a compression collar. The compression collars engage and apply an axial load on the seal assemblies to maintain a reliable seal between the seal housing and the outer portion of the in-core instrument housing, and between the seal housing and the outer portion of the in-core instrument.

Abstract: A cylinder head gasket for an internal combustion engine is formed of a metal plate extending substantially throughout an entire area to be sealed. The metal plate has a plurality of holes corresponding to cylinder bores of the engine, a plurality of beads surrounding the respective holes, and at least one area situated between the holes adjacent to each other. Seal coatings are deposited above the beads in the area. The seal coating has heatproof characteristic and compressibility to strengthen surface pressure of the beads at the area.

Abstract: A cylinder head gasket for an internal combustion engine is formed of one metal plate having a base portion extending substantially throughout an entire area to be sealed, a hole formed in the base portion corresponding to the hole of the engine, and a bead surrounding the hole. A resin coating is deposited on at least a part of the bead of the metal plate. Thus, the bead is reinforced and sealing ability is improved.

Abstract: Disclosed is a metal gasket which is capable of securing a sealing properties by strongly pressing a portion of a bead thereof, which faces a portion where a pressuring surface of one joining surface of one of an intake manifold and an EGR plate does not exist, to the other joining surface thereof. A metal gasket which is clamped between the two joining surfaces and has at least one hole for fluid, includes a bead for sealing the two joining surfaces, the bead surrounding the at least one hole for fluid, each of which allows openings for fluid to be communicated with each other, the openings being provided in the respective joining surfaces. The metal gasket further includes a convex portion, the tip of which abuts one of the joining surfaces, is provided in the vicinity of a portion of the beads abutting the other joining surface.

Abstract: A gasket-squeeze construction wherein a warp-limiter member is installed in a bolt hole in which a fastening bolt fits. The warp-limiter member is made less in an amount of flex than confronting surfaces, between which the gasket is disposed and squeezed by the tightening of the fastening bolt. The warp-limiter member serves to make the sealing stress uniform around a combustion gas hole. The warp-limiter member installed in the bolt hole, because of tougher to flex than the confronting surfaces when tightening the fastening bolt, makes uniform the clamping force of the fastening bolt and the compressive stress created around the associated bolt hole, moreover dispersing uniformly the sealing stress throughout around the combustion gas hole such as a cylinder bore, thereby rendering variation in distortion in the sealing joint less to improve the sealing performance.

Abstract: A gasket is provided for use between an engine block and a cylinder head of an internal combustion engine. The engine block has a combustion chamber fitted with a liner. A liner seal is compressed between an end of the liner and the cylinder head. The pressure of combustion tends to flex the cylinder head away from the engine block at a location away from the bolts which secure the head to the block, forming a gap. The gasket has an opening adapted to register with the combustion chamber. A thickened ring portion on the gasket surrounds the opening and serves as a load limiter for the seal, takes up the gap between the head and block caused by flexing, and provides a path for unloading combustion forces to limit movement of the liner.

Abstract: In the gasket, a shim member formed of shim portions and connecting portion is assembled with an upper metal plate with curved portions and flanges such that each shim portion is located between the flange and a base portion of the upper plate, and a lower metal plate is placed under the upper plate not to overlap the flanges and the shim member. The shim member is provided with an identification sign for identifying the thickness of the gasket and an assembly sign for identifying the orientation of the shim member at the connecting portion where the sealing ability is not affected, which can be seen from the back of the gasket after assembly. Therefore, when the shim member is assembled with the upper plate, the orientation of the shim member can be identified easily. Also, after assembly, the orientation of the shim member as well as the thickness of the gasket can be identified easily.

Abstract: A metal gasket is described which has a structure with no beads so that the need for dies used for molding is eliminated, thereby facilitating the processing of the gasket and achieving good cost performance, and which is excellent in sealing ability. The metal gasket comprises (i) an elastic metal plate having a base and folded-back portions each of which is formed so as to create a clearance together with the base and disposed so as to extend around a bore hole and (ii) a metal plate which is thicker than the elastic metal plate and has lower level portions each of which is located at a position closed to each bore hole, and the elastic metal plate and the metal plate are laminated such that each folded-back portion of the elastic metal plate faces the lower level portion of the metal plate.

Abstract: A metal flat gasket is provided that includes at least one sealing plate on which a bead and a deformation limiter for the bead are arranged around at least one through opening. The deformation limiter comprises a thickened part produced by upsetting the edge of the sealing plate in the region of the through opening. The thickness of the deformation limiter is substantially uniform over its entire length.

Abstract: The present invention relates to a cylinder head gasket comprising at least one metallic plate, whereby the cylinder head gasket comprises at least one combustion chamber passage opening and at least one further passage opening, and at least a first bead is formed on one of the metallic plates of the cylinder head gasket, said first bead being in the form of a closed continuous line which surrounds the combustion chamber passage opening, and at least a second bead is formed on one of the metallic plates of the cylinder head gasket, said second bead being in the form of a closed continuous line which surrounds the combustion chamber passage opening, wherein, from a top view of one of the main surfaces of the cylinder head gasket, the second bead surrounds the first bead and the further passage opening is disposed in the region between the first bead and the second bead, wherein the first bead is provided with a first coating containing an elastomeric component and the second bead is provided with a second coat

Abstract: A gasket is provided for use between an engine block and a cylinder head of an internal combustion engine. The engine block has a combustion chamber fitted with a liner. A liner seal is compressed between an end of the liner and the cylinder head. The pressure of combustion tends to flex the cylinder head away from the engine block at a location away from the bolts which secure the head to the block, forming a gap. The gasket has an opening adapted to register with the combustion chamber. A thickened ring portion on the gasket surrounds the opening and serves as a load limiter for the seal, takes up the gap between the head and block caused by flexing, and provides a path for unloading combustion forces to limit movement of the liner.

Abstract: The sealing arrangement for a flat flanged joint comprising a preferably metallic base body 1 has bearing surfaces 7, 7′ on each of its two sides for ring-shaped supports (11, 12) made of a soft material, the bearing surfaces (7, 7′) being flat over a large area and being situated essentially directly opposite to each other, at least one ring tooth (2, 3) being provided in the inner radial area of each bearing surface and preferably at least one ring tooth (5, 6) being also provided in the outer radial area of each bearing surface, said soft material supports each being fixed on the bearing surfaces (7, 7′), the ring teeth (2, 3, 4, 5, 6), when the arrangement is assembled, coming to rest on the flange surfaces (14, 15), and the soft material supports (11, 12) being at least inwardly limited by the ring teeth (2, 3), wherein the wall of the base body (1) has a low thickness of only 0.2 to 2.0 mm, preferably 0.3 to 1.

Abstract: The invention relates to a metallic cylinder head gasket for an internal combustion engine, having a cover plate which faces the cylinder head of the internal combustion engine in the installed state and is provided with one or more openings arranged next to one another, corresponding to the combustion chambers of the internal combustion engine. The cover plate has a bead around each opening with a space between the bead and the opening. This leaves a straight sheet metal portion in the edge region of the opening. Arranged adjacent to the bead around each opening radially inwards from the respective bead facing away from the cylinder head is a stopper for the bead, which at the same time forms an upward combustion chamber extension of the seal. In this case, the stopper decreases in its thickness radially outwards in such a way that the surface pressure in the region of the stopper is essentially homogeneous over the width of the stopper under operating conditions.

Abstract: A laminated gasket is provided, which ensures desired bore sealing surface pressures on the side of a cylinder head and on the side of a cylinder block, which is excellent in sealing ability and durability preferably by virtue of its double sealing function and which has a comparatively simple structure. This gasket has a core plate and elastic plates laminated to both surfaces of the core plate. The core plate has thin-walled portions each surrounding a bore opening and a thick-walled portion extending outwardly from each thin-walled portion. The elastic plates respectively have folded-back portions each of which is formed so as to create, together with a base portion, a clearance around its associated bore opening.

Abstract: A metal gasket is disclosed in which a shim laid on a bead plate around bore apertures in the bead plate is varied in radial width along the peripheries of the bore apertures to compensate for sealing stress circumferentially of the bore apertures. The metal gasket is composed of a bead plate with beads around its bore apertures and a shim including annular areas defining bore apertures and bridges connecting together any two adjoining annular areas. The shim around the bore apertures has a radial width at the bridges, which is substantially equal with a width across a web defined between any adjoining cylinder bores formed in mating surfaces of the cylinder block and cylinder head. Moreover, the shim at areas other than the bridges is varied continuously in its radial width in a range of from a flat area around the bore apertures to an area corresponding to the bead on the bead plate.

Abstract: A metal cylinder head gasket is formed of a metal plate extending substantially throughout an entire area to be sealed. The gasket includes a plurality of first holes for cylinder bores, a plurality of second holes for bolts, a plurality of beads formed in the metal plate to surround the first holes, and a plurality of slits formed in the metal plate to partly surround the beads between the second holes except for an intermediate area between the first holes. Each slit has narrow and wide areas. The narrow area has a width narrower than that of the wide area to adjust compressibility of the bead to thereby securely seal around the first holes.

Abstract: In order to provide a metal gasket suitable for use for a flange made of synthetic resin, the metal gasket disposed between a resin flange and an aluminium flange is composed of two elastic metal plates, on each of which a half bead is formed, and which are superposed on each other to be jointed so that half beads are directed opposite to each other. Since bending in a state, where the gasket is tightened, can be suppressed to an extremely small value at a same level in the case where the flanges are tightened without gasket, it is possible to remove worsening in flatness (planarity) of the resin flange.

Abstract: A metal gasket assembly comprises a metal main plate, a metal auxiliary plate lapped with the main plate, the main plate including cylinder openings formed at positions corresponding to cylinder bores in a cylinder block of an internal combustion engine, annular beads formed around the cylinder openings and having a cross-sectional shape of ‘V’, a plurality of coolant holes formed in the peripheral parts of the annular beads, an outer peripheral bead formed at a position where it entirely surrounds the annular beads and the plurality of coolant holes, and having a slope cross-sectional shape, while the auxiliary plate including cylinder openings formed corresponding to the cylinder openings in the main plate, fold-over parts formed around the auxiliary plate cylinder openings and fold-over in a direction reverse to the direction toward the main plate, and having a width with which they are vertically lapped at least with the entire ‘V’ shape of the annular beads on the main plate, annu

Abstract: A gasket is formed of a gasket member extending substantially throughout an entire area to be sealed, a compressible sealing member, and a hard coating. The gasket member has a first hole to be sealed, and a plurality of second holes for allowing bolts to pass therethrough situated around the first hole. The compressible sealing member is disposed on at least one side of the gasket member to completely surround the first hole without surrounding the second holes. The hard coating is disposed on the gasket member at the same side of the sealing member to surround the second holes. The hard coating is formed independently from the compressible sealing member and has compressibility less than that of the compressible sealing member. The gasket can be formed easily at a low cost.

Abstract: A metal laminate gasket for an internal combustion engine is formed of a first metal plate and one of plate combinations. The first metal plate includes a base portion, a curved portion to define a first hole, and a flange located under the base portion. Each plate combination includes an annular shim disposed between the flange and the base portion, and a second metal plate disposed under the base portion without laminating the annular shim and the flange. The thickness of the second metal plate is greater than the thickness of the annular shim and less than the total thicknesses of the annular shim and the flange. Each plate combination has the annular shim and the second metal plate with different thicknesses while keeping a difference in thickness between the annular shim and the second metal plate constant. Thus, the gaskets having the same grades with different thicknesses are formed by changing the plate combinations.

Abstract: A metal gasket for an internal combustion engine is formed of at least one metal plate extending substantially throughout an entire area to be sealed. The metal plate includes a hole to be sealed, and a bead projecting outwardly from the first metal plate to surround the hole. A concave is formed inside the bead to extend inwardly from an outer surface of the metal plate. A sealing material is disposed in the concave to project outwardly from the outer surface of the first metal plate. Thus, even if a foreign material is disposed on the bead, the sealing ability of the gasket is not substantially affected.

Abstract: Flat gasket, in particular, cylinder head gasket with a gasket plate which has at least one aperture and at least one sheet-metal layer which is provided with a bead surrounding the aperture, as well as with a stopper device preventing any excessive bead deformation; so that the sheet-metal layer does not tear even during dynamic pressure loads on the bead in the bead area which accompany a considerable flattening of the bead, the recess formed by the bead is filled over at least a considerable part of its depth with an elastomeric material which has appreciable flow properties under pressure even at ambient temperature (21° C.), i.e. is plastically deformable to a not inconsiderable extent.

Abstract: A cylinder head gasket includes a pair of first and second gasket substrates. The gasket substrates are each formed with a first and a second projection which project in opposite directions, with a clearance therebetween. According to a first aspect of the invention, each projection undergoes a plastic deformation toward the clearance defined between them when the gasket substrates are held sandwiched between a cylinder head and a cylinder block, each projection undergoing a magnitude of plastic deformation which is greater or lesser in accordance with the magnitude of a surface pressure therebetween. According to a second aspect of the invention, each projection is formed with a radially central part which projects toward the radially central part of the other projection and which is in close contact with each other continuously in the circumferential direction.

Abstract: A cylinder injecting fuel injection valve including a seal gasket sealing at least first two of three regions defined between the shoulder portion of the fuel injection valve main body, the shoulder portion of the cylinder head and an outer circumferential portion of the fuel injection valve main body. The gasket comprises an annular metallic elastic member and an annular support member elastically supporting the metallic elastic member. The gasket abuts at an abutting surface against the shoulder portion of the cylinder head at an axial position closer to the combustion chamber of the internal combustion engine than an upstream side end surface of the swirler member.

Abstract: A cylinder head gasket includes a pair of first and second gasket substrates. The gasket substrates are each formed with a first and a second projection which project in opposite directions, with a clearance therebetween. According to a first aspect of the invention, each projection undergoes a plastic deformation toward the clearance defined between them when the gasket substrates are held sandwiched between a cylinder head and a cylinder block, each projection undergoing a magnitude of plastic deformation which is greater or lesser in accordance with the magnitude of a surface pressure therebetween. According to a second aspect of the invention, each projection is formed with a radially central part which projects toward the radially central part of the other projection and which is in close contact with each other continuously in the circumferential direction.

Abstract: A gasket comprises a thin plate to be arranged between confronting surfaces of a cylinder block and a cylinder head. The thin plate has attached with adhesives susceptible to plastic deformation at areas where the thin plate comes in mating with the confronting surfaces. The adhesives come in adhesion with the confronting surfaces to restrain relative displacement that might occur constantly between the mating surfaces of the plate and the confronting surfaces. This contributes to keeping the gasket stiff. The adhesives of plastic deformation property are arranged along peripheries of cylinder bore holes at the areas where the thin plate comes in mating with the confronting surfaces. The adhesives, when have come in adhesion with the confronting surfaces, not only establish the reliable head-to-block sealing, but also restrain the displacement that might occurs constantly between the mating surfaces, in favor of plastic deformation of the adhesives.

Abstract: A metal gasket for an internal combustion engine is formed of a main gasket portion extending substantially throughout an entire area to be sealed. The main gasket portion is formed of at least one metal plate and has at least one hole to be sealed. A bore ring is disposed inside the at least one hole of the main gasket portion. The bore ring has a top portion and a bottom portion longer than the top portion to provide rigidity of the bore ring. The gasket can be properly fitted with the engine parts while protecting a bead formed on the metal plate to securely seal around the hole.

Abstract: A gasket (10) comprises a first sealing member (12) and a second sealing member (14) both made of springy metal, and a clamping member (16) which holds the first and the second sealing members in an overlying relationship. The first sealing member (12) has an arm portion (12a) projecting from the clamping member (16), the arm portion being adapted to resiliently form a seal with a first body. The second sealing member (14) has an arm portion projecting from the clamping member (16), the arm portion being adapted to resiliently form a seal with a second body. A compression limiting stop (16e) is provided.

Abstract: A metal laminate gasket is installed in an internal combustion engine having at least one hole therein. The gasket includes a first metal plate, a second metal plate situated over the first metal plate, and an auxiliary sealing member. The first plate includes a base portion, a curved portion to define a first hole, and a flange extending from the curved portion. The flange, the curved portion and a part of the base portion constitute a main sealing portion without substantial elasticity. The second plate has a large second hole and is situated above the base portion of the first plate. The sealing member is situated in a space between an edge of the second hole and the flange. The main sealing portion non-resiliently seals around the hole, while the sealing member resiliently seals outside the main sealing portion, so that even if the engine is made of light metal, the engine is not damaged by the gasket. The gasket can securely seal around the hole.

Abstract: A metal gasket is proposed, especially a cylinder head gasket for a combustion engine, which comprises a sealing plate having a combustion chamber through-hole, a deformation-limiting device lying adjacent to the combustion chamber through-hole and respectively one top and one bottom layer. The deformation-limiting device is configured as a symmetrical bead in relation to the top and bottom layers. A protrusion preferably provided with a radius is orientated towards one of the top and bottom layers and opposite thereto a depression facing the other of the top and bottom layers is provided which is surrounded by two raised portions projecting opposite the surface of the sealing plate. A filling is accommodated in the depression.

Abstract: A gasket is provided that is suitable for use in connection with a cylinder head. The gasket includes a first outer plate including a compensating portion, a second outer plate including a compensating portion, and a compensating plate positioned between said first and second outer plates. Preferably, at least one of said first and second outer plates includes a bead positioned outside of, and in close proximity to, said compensation portion of said plate. The compensating plate includes a compensating element and an edge portion. In a preferred embodiment, the area between the compensating portions of said first and second outer plates defines a compensating area and said compensating element is positioned within said compensating area. If desired, the gasket may also include a spacer plate.

Abstract: A metal gasket for use between heads and blocks of an internal combustion engine in which such gasket is composed of a beaded plate and a stopper plate placed one on top of the other. The metal gasket has an opening corresponding to the cylinder hold of the engine. The metal gasket has an annular stopper formed by folding back the periphery of the opening in the stopper plate. The metal gasket also has a stepped part along the outer periphery of the stopper. This stepped part projects toward the side of the gasket on which the stopper is formed. The metal gasket also has a spacer layer formed between the stopper and an annular pressure receiver of the stopper plate. The metal gasket also has a rubber coating layer formed at least on that side of the stopper plate opposite to the side on which the stopper is formed.

Abstract: The invention relates to a metallic cylinder head gasket for an internal combustion engine, having a cover plate which faces the cylinder head of the internal combustion engine in the installed state and is provided with one or more openings arranged next to one another, corresponding to the combustion chambers of the internal combustion engine. The cover plate has a bead around each opening with a space between the bead and the opening. This leaves a straight sheet metal portion in the edge region of the opening. Arranged adjacent to the bead around each opening radially inwards from the respective bead facing away from the cylinder head is a stopper for the bead, which at the same time forms an upward combustion chamber extension of the seal. In this case, the stopper decreases in its thickness radially outwards in such a way that the surface pressure in the region of the stopper is essentially homogeneous over the width of the stopper under operating conditions.

Abstract: This metal gasket is formed by interposing a shim member between a pair of elastic metal plates, and fixing the shim member and one of the elastic metal plate to each other at the portions thereof which are opposed to a water jacket, whereby the function of the shim member is secured with the fixed portions and opposed surfaces not interfering with each other. The shim member comprises a shim member body corresponding to an end surface of a cylinder body of a cylinder block, and projecting portions integral with said shim member body and extending therefrom to a position opposed to the water jacket. The fixing portions at which the shim member and one elastic metal plate are fixed to each other by crimping are positioned on the projecting portions extending to positions opposed to the water jacket.

Abstract: A metal gasket comprising a least one gasket sheet, wherein a hardness lowering region having a locally lowered hardness is formed in the gasket sheet in at least either a portion to be set to have a large elongation or a portion to be lowered in a spring constant. Also disclosed is a metal gasket manufacturing process comprising: the step of forming an opening of a desired size in registration with a cylinder bore in an elastic metal sheet as a material for making a gasket sheet composing a metal gasket; the step of annealing a portion, as corresponding to the first hardness lowering region in the gasket sheet, of the elastic metal sheet; and the step of forming a folded portion by folding back the vicinity of the opening.

Abstract: A metal gasket is formed of a metal plate having a hole, an edge portion around the hole, and a base portion extending substantially throughout an entire area of the gasket and located outside the edge portion. At least one annular projection and at least one annular groove are formed on at least one side of the edge portion of the metal plate as one unit. The annular groove is located between the annular projection and the base portion. The base portion of the metal plate has a thickness greater than a thickness at the annular groove and less than a thickness at the annular projection to thereby provide a surface pressure at the at least one annular projection.

Abstract: A composite gasket includes a central core located between non-metallic outer facing layers. Each non-metallic outer facing layer has an outer core adjacent the central core. The outer cores can be either perforated or non-perforated. A bead is provided on the central core to produce a resilient biasing force that urges the outer facing layers into contact with respective mating surfaces to improve gasket sealing. The central core optionally has an elastomeric coating to improve sealing between the central core and the outer cores to prevent leakage between gasket layers.

Abstract: A laminate-type metallic gasket comprising adjacent combustion chamber holes (A, A), a pair of bead substrates (3, 4) made of an elastic metallic plate with a bead (1) formed along each of the combustion chamber holes (A, A) and first and second intermediate plates (6, 8), in which peak portions of beads (1) are symmetrically opposite to each other, disposed between the two bead substrates (3, 4) according to the present invention wherein a first intermediate plate (6) is provided with a step (9) having a thickness less than that of a second intermediate (8) formed along an edge portion (7) of the combustion chamber holes (A, A).

Abstract: A gasket for use in an internal combustion engine is disclosed which includes a sealing element formed by an extrusion and ironing process in combination with a folding operation. The gasket has a plate that includes a body portion, a flange portion and an aperture. The thickness of the flange portion is reduced to less than that of the body portion by the extrusion and ironing process. The flange portion is then folded back onto a surface of the plate in facing relation to form a stopper seal to act as a primary seal. Optional embossments may then be formed radially and outwardly of the stopper seal so as to form a secondary seal.

Abstract: A metal gasket is disclosed in which a sealing stress exerted on a deck-surface from any one of confronting bead plates is dispersed slantwise along the direction leaving its associated cylinder bore aperture so that the cylinder bores are protected from deformation owing to the high sealing stress occurring in the open-end portions of the cylinder bores. The bead plates have sealing beads confronting flanges of an first intermediate plates at their borderlines smaller radially of their associated cylinder bore apertures while confronting the first intermediate plate, less in thickness than the flanges, at their borderlines larger radially of their associated apertures. The sealing stress on the deck-surfaces of the cylinder block and cylinder liner due to deformation of the beads may be dispersed uniformly over the flanges to thereby reduce the influence of the sealing stress on the liner section of the cylinder liner.

Abstract: A metal gasket is formed of a metal plate having a hole, an edge portion around the hole, and a base portion extending substantially throughout an entire area of the gasket and located outside the edge portion. At least one annular projection and at least one annular groove are formed on at least one side of the edge portion of the metal plate as one unit. The annular groove is located between the annular projection and the base portion. The base portion of the metal plate has a thickness greater than a thickness at the annular groove and less than a thickness at the annular projection to thereby provide a surface pressure at the at least one annular projection.

Abstract: A metal gasket 10 for use between heads and blocks of an internal combustion engine in which such gasket is composed of a beaded plate 11 and a stopper plate 12 placed one on top of the other. The metal gasket 10 has an opening 13 corresponding to the cylinder hole of the engine. The metal gasket 10 has an annular stopper 17 formed by folding back the periphery of the opening 13 the stopper plate 12. The metal gasket 10 also has a stepped part 19 along the outer periphery of the stopper 17. This stepped part 19 projects toward the side of the gasket on which the stopper 17 is formed. The metal gasket 10 also has a spacer layer 20 formed between the stopper 17 and an annular pressure receiver 18 the stopper plate 12. The metal gasket 10 also has a rubber coating layer 21 formed at least on that side of the stopper plate 12 opposite to the side on which the stopper 17 is formed.

Abstract: A metal laminate gasket of the invention is used for an internal combustion engine. The gasket is basically formed of a first and second metal plates laminated together. Each of the first and second metal plates includes a hole corresponding to a hole of the engine, an inner plain portion around the hole, an inclined portion around the inner plain portion, and an outer plain portion around the inclined portion The inclined portions of the first and second plates are oriented in the same direction. The inner plain portion of the second plate has a length to contact a part of the outer plain portion of the first plate to form a support area. Thus, it is possible to securely seal around the hole of the engine by the inclined portions of the first and second plates.

Abstract: A metal gasket for an internal combustion engine is basically formed of a main plate. The main plate includes a first hole for constituting one of bolt holes, a second hole corresponding to a fluid hole and situated adjacent to the first hole, and a full bead having a first half bead and a second half bead situated outside the first half bead. The first half bead completely surrounds only the second hole, and the second half bead surrounds the first and second holes. Thus, a portion away from the first hole is surrounded by the first and second half beads to securely seal around the second hole. Also, the tightening pressure by the bolt can be supported with good balance.

Abstract: An engine gasket flattens the surface pressure occurring around holes, prevents the occurrence of impressions in and damage to a cylinder block and a cylinder head, and secures a stable sealing performance. This metal gasket has elastic metal plates and an intermediate metal plate interposed between these elastic metal plates. The elastic metal plates are provided with full beads along the circumferences of the holes so that the ridge portions of the full beads contact the intermediate metal plate. The intermediate plate has, on regions which are between the holes and full beads of the elastic metal plates, half beads extending toward the elastic metal plates. The elastic metal plates are folded back along the circumferences of the holes.

Abstract: A cylinder head gasket 1 includes a shim ring 5 which surrounds a combustion chamber opening 2A in a gasket body 2. The shim ring is circumferentially spot welded along weld lines 5a, 5b. The weld spacing of the spot welding is varied to provide zones H.sub.1, H.sub.2 and H.sub.3 of high welding density and zone of a low welding density. The weld spacing in the zone of high welding density is such that a distortion in the shim ring is produced under the influence of heat generated during the welding operation if the weld spacing is used around the full circumference of the shim ring for spot welding. However, by interposing a zone of a low welding density, a distortion in the shim ring can be prevented while increasing the welding strength.

Abstract: A static gasket for sealing mating flanges which are clamped together by at least one fastener. A carrier holds the seal in a groove and the seal is protected from over compression by a compression limiter which is inserted into an aperture in the carrier. The compression limiter is crescent shaped to permit the insertion of a fastener stud into a through hole formed between the compression limiter and the aperture in the carrier.