A gasket to be attached between a cylinder head and a cylinder block of an internal combustion engine includes a pair of substrates, an intermediate plate disposed between the pair of substrates, and a spacer disposed between the pair of substrates. Each of the pair of substrates includes a cooling water sealing bead for sealing a cooling water passage surrounding a bore wall formed in the cylinder block. The intermediate plate includes a wedge portion formed in a shape corresponding to a deck surface of the bore wall of the cylinder block so as to be sandwiched between the bore wall and the cylinder head. The spacer is formed so as to extend in a cross direction S crossing an arrangement direction L of boreholes of the cylinder block without overlapping the cooling water sealing bead.

Disclosed is a hermetically sealed assembly for precompression of a martinsetic metal for use in negative pressure energy transfer systems, and method of making same. The assembly comprising a martinsetic metal disposed between and in contact with sapphire windows. The assembly has an internal channel to accommodate expansion and contraction of the martinsetic metal. Hermetic sealing means including in different embodiments positive pressure fasteners and a bellows element are used at the periphery of the assembly to enable operation over temperature ranges from ambient to cryogenic without loss of integrity or leakage.

A method and sealing gasket are shown for providing a sealing joint between a spigot section and a socket section of low pressure plastic pipe, such as drain waste vent pipe that require a minimum of tools and operational steps to complete. The sealing gasket is installed in one of the sections to be joined and the spigot section is inserted within a mouth opening of the socket section with the sections being pressed together in a single operation, thereby forming both the joint and the seal. The sealing gasket is a composite gasket made with one section of a hard plastic material and one section of a thermoplastic elastomer material. No glue or adhesive is required.

Methods and systems are provided for a multi-layered steel gasket for an internal combustion engine. In one example, a system may include a pressure relief device arranged in the multi-layered steel gasket for releasing pressure from one or more fluids flowing through passages of the internal combustion engine.

Disclosed is a hermetically sealed assembly for precompression of a martinsetic metal for use in negative pressure energy transfer systems, and method of making same. The assembly comprising a martinsteic metal disposed between and in contact with sapphire windows. The assembly has an internal channel to accommodate expansion and contraction of the martinsetic metal. Hermetic sealing means including in different embodiments positive pressure fasteners and a bellows element are used at the periphery of the assembly to enable operation over temperature ranges from ambient to cryogenic without loss of integrity or leakage.

An improved multi-layer gasket assembly is provided. The gasket assembly includes a plurality of metal gasket layers which have at least one set of axially aligned openings. The plurality of layers includes at least two functional layers, at least one distance layer and at least one stopper layer. Each of the functional layers has at least one embossment bead that is spaced radially from the openings, and the distance and stopper layers are sandwiched between the functional layers. At least one of the stopper and the distance layer has a polymeric coating applied to at least a portion of an exterior surface thereof, and the stopper and distance layers are laser welded together through the polymeric coating.

Methods and systems are provided for a multi-layered steel gasket for an internal combustion engine. In one example, a system may include a pressure relief device arranged in the multi-layered steel gasket for releasing pressure from one or more fluids flowing through passages of the internal combustion engine.

A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier layer.

A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier 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.