Abstract: The multi-layer gasket assembly includes a plurality of metal gasket layers which have at least one set of axially aligned openings. The plurality of gasket layers includes at least two functional layers which are arranged in a stacked relationship with one another. Each functional layer has at least one full embossment bead that is spaced radially from and surrounds the at least one opening. The functional layers are also arranged such that the full embossment beads are in a nested relationship with one another. At least one stopper is positioned adjacent the nested full embossment beads for preventing full flattening of the full embossment beads.

Abstract: A cylinder head gasket constructed in accordance with invention provides a reliable gas/fluid-tight seal between a cylinder head and cylinder block during assembly and maintains the seal during use without substantially losing the contact pressure provided by the gasket during assembly while in use. The cylinder head gasket includes a first functional layer having an opening bounded by an annular free edge. The first functional layer has a full bead and a half bead. The half bead is between the full bead and the free edge. The half bead extends in a first axial direction to a plateau portion and the full bead extends in a second axial direction opposite the first axial direction to a peak.

Abstract: The multi-layer gasket assembly includes a plurality of metal gasket layers which have at least one set of axially aligned openings. The plurality of gasket layers includes at least two functional layers which are arranged in a stacked relationship with one another. Each functional layer has at least one full embossment bead that is spaced radially from and surrounds the at least one opening. The functional layers are also arranged such that the full embossment beads are in a nested relationship with one another. At least one stopper is positioned adjacent the nested full embossment beads for preventing full flattening of the full embossment beads.

Abstract: A multi-layer cylinder head gasket providing improved sealing performance, stability, and a more rigid joint between two components is provided. The gasket includes a plurality of functional layers each including a full bead located between an inner edge and outer edge and surrounding a combustion chamber opening. A stopper is disposed between the functional layers and is located radially between the combustion chamber opening and the full bead. A coating material is applied to at least one surface of at least one functional layer and extends along a majority of the length of the functional layer. To achieve the improved performance, a region along the surface located between the inner edge and the full bead remains uncoated, or includes a reduced amount of the coating material. Alternatively, the stopper can be located between the combustion chamber opening and the inner edges of the functional layers to provide the uncoated region.

Abstract: A multi-layer cylinder head gasket providing improved sealing performance, stability, and a more rigid joint between two components is provided. The gasket includes a plurality of functional layers each including a full bead located between an inner edge and outer edge and surrounding a combustion chamber opening. A stopper is disposed between the functional layers and is located radially between the combustion chamber opening and the full bead. A coating material is applied to at least one surface of at least one functional layer and extends along a majority of the length of the functional layer. To achieve the improved performance, a region along the surface located between the inner edge and the full bead remains uncoated, or includes a reduced amount of the coating material. Alternatively, the stopper can be located between the combustion chamber opening and the inner edges of the functional layers to provide the uncoated region.

Abstract: A static cylinder head gasket assembly includes an inner distance layer having an opening extending between opposite planar sides with the opening being configured to register with a cylinder bore of an internal combustion engine. A plurality of inner functional layers overlie each of the opposite sides of the inner distance layer. The inner functional layers have axially aligned, nested annular sealing beads extending about the opening in the distance layer. The gasket assembly further includes a plurality of outer functional layers separate from the inner functional layers. The outer functional layers have annular inner peripheries spaced axially from one another to provide a gap configured to receive at least a portion of the inner distance layer therein. The outer periphery of the inner distance layer is captured axially between the outer functional layers and thus, the inner distance layer is prevented from being disassembled from the outer functional layers.

Abstract: A static cylinder head gasket assembly includes an inner distance layer having an opening extending between opposite planar sides with the opening being configured to register with a cylinder bore of an internal combustion engine. A plurality of inner functional layers overlie each of the opposite sides of the inner distance layer. The inner functional layers have axially aligned, nested annular sealing beads extending about the opening in the distance layer. The gasket assembly further includes a plurality of outer functional layers separate from the inner functional layers. The outer functional layers have annular inner peripheries spaced axially from one another to provide a gap configured to receive at least a portion of the inner distance layer therein. The outer periphery of the inner distance layer is captured axially between the outer functional layers and thus, the inner distance layer is prevented from being disassembled from the outer functional layers.

Abstract: A cylinder head gasket constructed in accordance with invention provides a reliable gas/fluid-tight seal between a cylinder head and cylinder block during assembly and maintains the seal during use without substantially losing the contact pressure provided by the gasket during assembly while in use. The cylinder head gasket includes a first functional layer having an opening bounded by an annular free edge. The first functional layer has a full bead and a half bead. The half bead is between the full bead and the free edge. The half bead extends in a first axial direction to a plateau portion and the full bead extends in a second axial direction opposite the first axial direction to a peak.

Abstract: A valve cover assembly for sealed engagement with a cylinder block includes a cover portion, a rail and a molded-in-place elastomeric bridge molded to the cover portion and the rail maintaining the cover portion and the rail in spaced relation to one another. The rail has an outwardly extending mounting flange providing a hard mounting bottom surface that is coplanar with the rail sealing surface. A seal depends from the sealing surface of the rail when in an uninstalled, uncompressed state for compression against the cylinder block upon the sealing surface and the hard mounting bottom surface being brought into engagement with the cylinder block, thereby establishing fluid-tight seal between the valve cover assembly and the cylinder block.

Abstract: A valve cover assembly for sealed engagement with a cylinder block includes a cover portion, a rail and a molded-in-place elastomeric bridge molded to the cover portion and the rail maintaining the cover portion and the rail in spaced relation to one another. The rail has an outwardly extending mounting flange providing a hard mounting bottom surface that is coplanar with the rail sealing surface. A seal depends from the sealing surface of the rail when in an uninstalled, uncompressed state for compression against the cylinder block upon the sealing surface and the hard mounting bottom surface being brought into engagement with the cylinder block, thereby establishing fluid-tight seal between the valve cover assembly and the cylinder block.