Flat seal comprising sealing bead and embossing, and method for the production thereof
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United States of America Patent
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Mar 11, 2014
Grant Date -
May 24, 2012
app pub date -
Jan 26, 2010
filing date -
May 15, 2009
priority date (Note) -
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Abstract
A metallic flat seal, in particular a cylinder head gasket, includes at least one through-hole, a functional layer, a spacer layer, and a stopper layer which is arranged between the functional layer and the spacer layer, as well as a closed sealing bead around every through-hole in the functional layer, wherein the sealing bead points in the direction of the stopper layer, the seal additionally comprising an embossed closed contour around every through-hole in that least the stopper layer, the functional layer or the spacer layer, wherein the contour forms a fixing aid. A method is also provided for making such a gasket.
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