Abstract: A metal gasket (10) installed between a cylinder head and a cylinder block comprises at least one metal substrate (11) coated with a sealant (19) on its outer surface, and including a full bead (13) for cylinder bore hole sealing and a half bead (16) for liquid hole sealing. The half bead (16) includes: an inclined plate portion (16b) connected to a flat substrate body (11a) of the metal substrate (11) through a first bend portion (16a) and inclined with respect to the substrate body (11a); and an edge plate portion (16d) connected to the inclined plate portion (16b) through a second bend portion (16c) and inclined with respect to the inclined plate portion (16b). A radius at a convex surface of the first bend portion (16a) and a radius at a concave surface of the second bend portion (16c) are in a range of 2.0 mm to 3.5 mm.

Abstract: A metal gasket (10) installed between a cylinder head and a cylinder block comprises at least one metal substrate (11) coated with a sealant (19) on its outer surface, and including a full bead (13) for cylinder bore hole sealing and a half bead (16) for liquid hole sealing. The half bead (16) includes: an inclined plate portion (16b) connected to a flat substrate body (11a) of the metal substrate (11) through a first bend portion (16a) and inclined with respect to the substrate body (11a); and an edge plate portion (16d) connected to the inclined plate portion (16b) through a second bend portion (16c) and inclined with respect to the inclined plate portion (16b). A radius at a convex surface of the first bend portion (16a) and a radius at a concave surface of the second bend portion (16c) are in a range of 2.0 mm to 3.5 mm.

Abstract: A metal gasket material plate includes a sealing layer formed by layering a chemical coating layer, an adhesive layer, and a rubber coating layer in this order on at least one side of a metal plate. The chemical coating layer is formed by a thermosetting surface preparation agent including inorganic compound particles and a metal alkoxide compound. The adhesive layer is formed by an adhesive including an epoxy compound and an anti-corrosive pigment. The rubber coating layer is formed by a rubber agent including rubber.

Abstract: A metal gasket material plate includes a sealing layer formed by layering a chemical coating layer, an adhesive layer, and a rubber coating layer in this order on at least one side of a metal plate. The chemical coating layer is formed by a thermosetting surface preparation agent including inorganic compound particles and a metal alkoxide compound. The adhesive layer is formed by an adhesive including an epoxy compound and an anti-corrosive pigment. The rubber coating layer is formed by a rubber agent including rubber.

Abstract: There is provided a metal gasket that is at low cost yet with high sealing performance. A metal gasket 1 includes at least one metal gasket substrate 2 having a circumferential bead 14 formed circumferentially around a cylinder hole 6. The circumferential bead 14 includes a first bead portion 20 formed of a pair of inclined walls 20a, 20b each extending from the gasket substrate to a tip end, the tip ends of the pair of the inclined walls being spaced from each other, and a second bead portion 21 extending from the tip ends of the inclined walls 20a, 20b in a direction opposite to the protruding direction of the inclined walls. The following relationships are satisfied: Fh1>Fh2, and W1>W2, where Fh1 is a height of the first bead portion 20, Fh2 is a height of the second bead portion 21, W1 is a half of a width of the circumferential bead 14, and W2 is a width of the second bead portion 21.

Abstract: There is provided a metal gasket that is less susceptible to lift and thrust phenomenon of housings and can effectively function as a sealing at a blowhole. The metal gasket includes an embossment portion provided with a pair of outer inclined portions and a pair of inner inclined portions. The metal gasket and satisfies the following relationships: Mh2/Mh1=1.10?1.81, W3>W1, and W3>W2, where Mh1 and Mh2 are vertical lengths, and W1, W2 and W3 are horizontal lengths. When the gasket is sandwiched in between two housings, tip ends abut on the housing to form two seal lines, and root ends, and another tip end abut on the housing H2 to form three seal lines.

Abstract: There is provided a metal gasket that is less susceptible to lift and thrust phenomenon of housings and can effectively function as a sealing at a blowhole. The metal gasket includes an embossment portion provided with a pair of outer inclined portions and a pair of inner inclined portions. The metal gasket and satisfies the following relationships: Mh2/Mh1=1.10?1.81, W3>W1, and W3>W2, where Mh1 and Mh2 are vertical lengths, and W1, W2 and W3 are horizontal lengths. When the gasket is sandwiched in between two housings, tip ends abut on the housing to form two seal lines, and root ends, and another tip end abut on the housing H2 to form three seal lines.

Abstract: Provided is a metal gasket for a cylinder head that is capable of improving engaging force between a substrate and a step adjustment plate.

Abstract: There is provided a metal gasket that is at low cost yet with high sealing performance. A metal gasket 1 includes at least one metal gasket substrate 2 having a circumferential bead 14 formed circumferentially around a cylinder hole 6. The circumferential bead 14 includes a first bead portion 20 formed of a pair of inclined walls 20a, 20b each extending from the gasket substrate to a tip end, the tip ends of the pair of the inclined walls being spaced from each other, and a second bead portion 21 extending from the tip ends of the inclined walls 20a, 20b in a direction opposite to the protruding direction of the inclined walls. The following relationships are satisfied: Fh1>Fh2, and W1>W2, where Fh1 is a height of the first bead portion 20, Fh2 is a height of the second bead portion 21, W1 is a half of a width of the circumferential bead 14, and W2 is a width of the second bead portion 21.

Abstract: The present invention is intended to provide a metal gasket material plate with which exfoliation of the coating or blister can be prevented even if it is used in the presence of an electrolyte aqueous solution and which can be manufactured through a process without use of hexavalent chromium in consideration of the environment, etc. The present, invention relates to a metal gasket material plate comprising a metal plate 1 having a rubber layer 4 on one side or both sides thereof through an adhesive layer 3, wherein a rust-resistant pigment is added to both of said adhesive layer 3 and said rubber layer 4.

Abstract: A metal gasket for a cylinder head has a lamination of plates. The gasket includes two base metal plates each of which includes cylinder holes, circumferential beads formed around the peripheries of individual cylinder holes, cooling water holes formed outside the peripheries of the circumferential beads, and an outer bead formed so as to entirely enclose the circumferential beads and the cooling water holes. The circumferential beads of the two base plates are aligned in a direction of thickness of the gasket. Claw shaped protrusions are provided for one of an outer step adjustment metal plate and an inner step adjustment metal plate and extend from a cooling water jacket to the outer edges of the base plates into engagement holes in the other of the inner step adjustment plate and the outer step adjustment plate.

Abstract: A metal gasket for cylinder head 1 of plate lamination type, comprises two base metal plates each of which includes cylinder holes, circumferential beads formed around the peripheries of individual cylinder holes, cooling water holes formed outside the peripheries of the circumferential beads, and an outer bead formed and positioned so as to entirely enclose the circumferential beads and the cooling water holes, wherein the circumferential beads of the two base plates are aligned in the direction of thickness of the metal gasket. Claw-like protrusions are provided for one of an outer step adjustment metal plate and extending from the cooling water jacket to the outer edges of the base plates, and a thicker inner step adjustment metal plate 4 extending from inside the circumferential beads to the cooling water jacket, into engagement holes in the other of the inner step adjustment plate and the outer step adjustment plate.

Abstract: An expansion graphite sheet of high thermal resistance includes an expansion graphite as a main component, and inorganic thermal resistance particles made of at least one selected from the group consisting of aluminum boride (AlB2 and/or AlB12), silicon boride (SiB6), zinc boric acid (2ZnO.3B2O3.3.5H2O) and phosphorous boride (PB). An exhaust gasket made of the expansion graphite sheet, in addition to the expansion graphite sheet, can exhibit high thermal (oxidization) resistance under a high temperature of 600–700° C.

Abstract: A compound sheet gasket which exhibits superior sealing durability to fretting is provided. The compound sheet gasket is mounted between a housing and a cover provided at an opening of the housing, and the friction coefficient of any one surface of a front surface adhered to the housing by the flexibility thereof and a rear surface adhered to the cover by the flexibility thereof, is set to be 1.15 times or more that of the other.

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: Provided is a gasket capable of maintaining a high sealing property under a high temperature, in which a gasket basic substance and coverture are not sublimated or decomposed when the gasket is used under a high temperature above 500° C. The gasket for a high-temperature joint includes a gasket basic substance formed by filling a heat-resistant filler mainly composed of diatomaceous earth into gaps of a meshed metallic reinforcing member, and coverture made of a heat-resistant antifriction material mainly composed of a mixture of boron nitride and polytetrafluoroethylene resin for covering a surface of the gasket basic substance.

Abstract: There is provided a non-chromium treated material in which peeling resistance between a metal plate and a rubber layer via a primer layer and a bond layer, which is decreased by fretting and antifreeze liquid, can be improved, the rubber layer is less liable to peel from the metal plate, and the material has little effect on the environment and human body. In a metal gasket raw material plate 1 of a laminated form in which a rubber layer 5 is provided on a stainless steel plate 2 via a bonding layer 4, a primer layer 3 of a silica-alumina condensate is formed on the surface of the stainless steel plate 2.

Abstract: A metal gasket assembly comprises a substrate metal sheet having at least one opening, and a peripheral member fitted into the opening along and welded to the periphery thereof. The peripheral member is made of a metal plate having a thickness greater than that of the substrate metal sheet.

Abstract: The composite material for a metal gasket includes a metal plate; a rubber layer fixed on the surface of the metal plate; and a solid lubricant layer fixed on the rubber layer. The solid lubricant layer contains polytetrafluoroethylene and a resin as main components, and has a friction coefficient equal to 0.15 or lower. Thus, the seal durability of the metal gasket is improved by effectively preventing fretting wear.

Abstract: A metal gasket assembly which can enhance the sealing function for combustion pressure in a cylinder bore and maintain the sealing function for a long time, comprises a metal base plate, and a metal reinforcement plate having a thickness smaller than that of the base plate and lapped with the base plate, the base plate having cylinder openings formed at positions corresponding to cylinder bores in a cylinder block of an internal combustion engine, annular beads formed respectively around the cylinder openings and having a V-shaped cross section, a plurality of coolant holes formed in the peripheral parts of the annular beads, and an outer peripheral bead entirely surrounding the annular beads and the plurality of coolant holes and having a cross-sectional shape of slope, and the reinforcement plate having fold-over parts which are folded onto the projection side of the annular bead at the peripheral edge parts of the cylinder openings in the base plate, and extend into the inside of the annular beads so as to