A metal gasket which enables improvement of sealing properties by making sufficient compression of a full bead possible even if elastic coating is formed along the full bead. In the gasket (1) having a full bead (13), formed on a metal substrate (10), having a mountain-shaped protruding surface formed on one side in a thickness direction and a valley-shaped recessed surface formed on the other side in the thickness direction, elastic coating (20) is formed on the whole surface of the protruding surface of the full bead (13), and the elastic coating (20) is formed on the recessed surface of the full bead (13), except a slit-shaped elastic coating-free section (14) along a bottom section (13a) of the recessed surface.

A coating agent for a rubber-coated cylinder head gasket contains a lubricant and a urethane resin. The lubricant is unsintered polytetrafluoroethylene resin particles having an average primary particle size of 1 μm or less. The amount of the unsintered polytetrafluoroethylene resin particles in a solid content is 30 to 80% by volume. The present invention provides a coating agent for a rubber-coated cylinder head gasket that can form a coat that is highly wear-resistant under high contact pressure and high temperature conditions and with which a rubber layer is less likely to stick to the seal face of the cylinder block or the cylinder head after the use under high contact pressure and high temperature conditions, and a cylinder head gasket obtained using the coating agent.

Seal between mutually fixed surfaces comprises a metal ring, placed between graphite layers, where sections of the metal ring to be coated with graphite have a jagged profile. Both sides of the metal ring are coated with graphite in such a way that graphite layers and the metal ring form a seamless whole. Recesses are made in the seal on both sides between graphite rings, a hole is placed in their centre.

A gasket, to be installed between a first housing and a second housing, includes a first loop-shaped portion in a loop shape, a second loop-shaped portion in a loop shape that is positioned at a radially inner side of the first loop-shaped portion, with a first gap between the first loop-shaped portion and the second loop-shaped portion, and a first connector portion connecting the first loop-shaped portion and the second loop-shaped portion in a part of the first gap.

A gasket assembly includes a gasket body, an adhesive-backed film, and a plurality of grommets. The gasket body includes a first face, and the adhesive-backed film includes a sticky face bonded to the first face of the gasket body. The grommets are bonded to the sticky face of the adhesive-backed film.

A material for gaskets is disclosed, wherein a metal surface coating layer, a primer layer and a rubber layer are formed, or a metal surface coating layer and a rubber layer are formed on at least a part of one side or both sides of a substrate formed of a metal plate sequentially from the metal plate side, and the metal surface coating layer comprises (A) one or more carbonates selected from the group consisting of Mg carbonate, Co carbonate, Zr carbonate, Mn carbonate, Ni carbonate, and Cu carbonate and (B) one or more selected from the group consisting of silica, alumina, zirconia, and titania.

A gasket for a combustion chamber is provided. The gasket comprises a plated surface extending across at least a portion of the metal base. In the gasket, at least a portion of the plated surface includes a laser treated section with a first raised surface that protrudes away from the metal base and the laser treated section is arranged in a mid-span that is arranged between two cylinder openings.

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.

A gasket includes: a metal plate portion having a sealing target hole and a fastening hole; and a coating layer applied to a surface of the metal plate portion. The coating layer includes a rubber layer and a lubricating layer having a lower coefficient of friction than the surface of the metal plate portion. In the coating layer on a part of the surface of the metal plate portion that includes at least a periphery of the sealing target hole, the rubber layer and the lubricating layer are laminated and the lubricating layer is arranged on a surface layer of the coating layer. In the coating layer on a periphery of the fastening hole, the rubber layer is laminated and the rubber layer is arranged on a surface layer of the coating layer.

Seal between mutually fixed surfaces comprises a metal ring, placed between graphite layers, where sections of the metal ring to be coated with graphite have a jagged profile. Both sides of the metal ring are coated with graphite in such a way that graphite layers and the metal ring form a seamless whole. Recesses are made in the seal on both sides between graphite rings, a hole is placed in their centre.