Plate filter element

A filter housing for a filter device, comprising:

• two housing shells, which can be fastened to each other in a flange region and thus enclose an inner space for accommodating a filter element, wherein the filter element includes:
• a filter body having a peripheral edge, which has at least to rectilinear wall sections, which border each other forming a corner,
• a seal attached to the filter body, and arranged peripherally along the edge,
• wherein the seal has an inner contour running around the inside and an outer contour running around the outside,
• wherein the inner contour runs parallel to the rectilinear edge sections into the respective corner,
• wherein the outer contour runs parallel to the rectilinear edge sections to a corner region, which contains the respective corner and end sections of the rectilinear edge sections bordering the respective corner, the outer contour forming a bulge, which curves outwards in relation to rectilinear sections of the outer contour, in the corner region,
• wherein a first housing shell has an inner rib in the flange region, which rib extends peripherally in a complementary manner to the inner contour of the seal of the filter element,
• wherein the first housing shell has an outer rib in the flange region, which rib extends peripherally in a complementary manner to the outer contour of the seal of the filter element.