Patent ID: 9719464
Date: 2017-08-01
CPC Classifications: F02F,F16J

Claim:
1. A flat gasket, comprising: a functional layer having at least one media through-opening and at least one combustion chamber through-opening; and a second layer, which is separate from said functional layer and has a corresponding at least one media through-opening that corresponds to said at least one media through-opening in said functional layer and a corresponding at least one combustion chamber through-opening that corresponds to said at least one combustion chamber through-opening in said functional layer; wherein said second layer includes a step which is disposed inside said at least one media through-opening in said functional layer in such manner as to align a main center plane of said functional layer parallel to surfaces to be sealed with a local center plane of said second layer inwardly of said step and also parallel to said main center plane; wherein said functional layer has at least one combustion chamber sealing bead for each combustion chamber through-opening; and wherein said second layer has an elastomer sealing portion for each media through-opening, wherein the elastomer sealing portion extends on an upper and a lower sealing face of the second layer to define upper and lower sealing profile faces, respectively, and wherein said upper and lower sealing profile faces are connected by means of an integral elastomer bridge which surrounds an inner boundary of said associated media through-opening of said second layer in a closed manner; and wherein said second layer has a sealing bead in an outer boundary region thereof for each media through-opening; and said functional layer and said second layer lie one above the other in said outer boundary region; or wherein said second layer extends further outwards than said functional layer.