Steel laminate gasket with a plate information device

Claim 1

A steel laminate gasket with a plate information device adapted to be placed between two engine parts to be sealed, comprising, a plurality of first metal plates for constituting the steel laminate gasket, each first plate having a size corresponding to sizes of the engine parts to be sealed, and a plate information area in the form of a hole or a notch, said plate information areas being located inside the first plates so that when the first plates are assembled and piled together, the plate information areas align together exactly without extending outside of the engine parts, and at least one second metal plate having a certain thickness situated between the first metal plates and having a plate information sign in an area corresponding to the plate information areas of the first metal plates, said plate information sign of the second metal plate, when the firs and second metal plates are assembled and piled together, being positioned in the area corresponding to the plate information areas of the first metal plates so that the plate information sign can be seen through the plate information areas, whereby different second plates having various thicknesses with corresponding information signs may be identified by its particular information sign when viewed through said plate information areas.