A gasket manufacturing method is provided. The gasket has a base material with a bead and an elastomeric gasket body disposed in a top portion of the bead. The method includes sequentially forming the bead on one part of a plane of the base material and applying a molding material of the gasket body to the top of the bead. When forming the bead on the one part of the plane, a protrusion is formed in each end in the width direction in the top of the bead. The protrusions are utilized as a coating width defining means of the molding material when applying the molding material to the top of the bead.

A metal gasket is capable of increasing bonding strength of a seal member through pressure bonding, enhancing sealing performance as a whole, and reducing the manufacturing cost. A method for manufacturing a gasket-constituting plate is capable of reducing the manufacturing cost of the gasket-constituting plate, and increasing bonding strength of a seal member to a blank metal plate through pressure bonding. Two gasket-constituting plates are layered on each other. Covering parts each having a width are provided on an outer surface of the first gasket-constituting plate, along beads so as to cover the beads in a plan view. Seal projecting parts are provided on outer surfaces of the covering parts along the covering parts so as to project outward in the thickness direction. Seal members including the covering parts and the seal projecting parts, respectively, are composed of a single member integrally molded by using a rubber material.

It is an object of the present invention to provide a sealing structure for a casing that can reduce the number of used gaskets and achieve further weight reduction, with the sealing function of the gaskets secured. The object is solved by including: a case 2 having an opened top; a cover 3 attached to the top of the case 2 to form a fluid flow path therein; a center plate 5 interposed between the case 2 and the cover 3 and partitions an inner space into the side of the case 2 and the side of the cover 3; and a gasket 4, which is disposed between the case 2 and the cover 3, and forming the center plate 5 so as to have a size that is within an inner peripheral side relative to a sealing line 41 of the gasket 4 and stacking this center plate on the gasket 4, and attaching the cover 3 to the top of the case 2 with the stacked gasket 4 and center plate 5 sandwiched there between to compress the gasket 4 with the mutual butting surfaces between the case 2 and the cover 3.

A flat gasket, as used for example as a cylinder head gasket in internal combustion engines may have a first layer and at least one through-opening which extends through all the layers of the flat gasket. The first layer may have a filling channel which extends in the layer plane to the through-opening in the first layer. A circumferential edge of the through-opening in the first layer may have a moulded-on seal which contains or is made of an elastomer and which runs around the through-opening and extends into the filling channel. In the uncompressed state of the flat gasket, the elastomeric filling of the filling channel may have in a region of the filling channel adjacent to the circumferential edge of the through-opening in the first layer, a region that is thickened perpendicular to the layer plane of the first layer.

A hydraulic system control plate with at least three layers, at least one through-opening being introduced in an inner one of the three layers and being delimited, on at least one part of its surface in the inner layer, by the two other layers is disclosed. A method for producing such a hydraulic system control plate is disclosed.

A thermally and electrically conductive gasket of a gasket set configured to be mounted between a faceplate and backing plate of a showerhead electrode assembly includes an inner gasket configured to be mounted on an inner electrode of a showerhead electrode assembly. The inner gasket includes a plurality of concentric flat rings connected by a plurality of spokes. A first annular gasket surrounds and is concentric with the inner gasket and includes a flat annular ring having a plurality of cutouts. A second annular gasket surrounds and is concentric with the first annular gasket and includes a flat annular ring having a plurality of cutouts. A third annular gasket surrounds and is concentric with the second annular gasket and includes a flat annular ring having a plurality of cutouts. The gasket accommodates gas injection holes, alignment pin holes, an alignment ring groove, and/or threaded holes.

A gasket (20) is provided with a uniform thickness spacer layer (66) between two metal upper active layers (78, 80) and two lower active layers (82,84). Each of the layers has aligned openings. A first tab (158, 140) is formed from one of the upper active layers and is located in a first slot (168) in the spacer layer. A second tab (132, 150) is formed in a flange of one of the upper active layers and is located in a second slot (174) located in the spacer layer. A third tab (190, 208) is formed from one of the lower active layers and is located in a third slot (212) located in the spacer layer. A fourth tab (176, 194) is formed in a flange of one of the lower active layers and is located in a fourth slot (218) located in the spacer layer.

A cylindrical component has a groove bottom (4) that extends approximately parallel to the course of the unworked surface of the component, and has a side wall (6, 7) inclined at an angle () of less than 90 to the groove bottom (4). To increase the adhesion between a coating to be applied to the surface of the component an upper region of the side wall (6, 7) is adjoined by an oblique surface (8, 9) at an angle () of greater than 90 to the side wall.

A rubber-metal laminate includes: a metal sheet; a fluorinated rubber layer laminated on one surface or both surfaces of the metal sheet; and a surface-coating layer with which the fluorinated rubber layer is coated, wherein the surface-coating layer is a cured film obtained by curing of a coating film of a surface-coating agent containing a silicone emulsion, and the silicone emulsion is contained at 10 mass % or more in the surface-coating agent.

A gasket and flange connection structure for a plumbing instrument including a substantially annular core (30) coated with a coating part (31) and formed with annular seal surfaces (32) on both surfaces. These annular seal surfaces (32) are provided so as to be capable of making sealed contact with any of flange surfaces (20, 21, and 22) of a flat seat shape flange, a full-flat seat shape flange, and a grooved-shape flange for allowing shared use. Configured on outer peripheral sides of the annular seal surfaces (32) are extended mounting parts (33) having a plurality of different diameters in accordance with the outer diameters of the various flange surfaces.