A filter element comprises a pleated metal fiber fleece being pleated according
to pleating lines providing an edge with pleat openings to be closed in order to
make gas flowing through the metal fiber fleece. The filter element further comprises
at least two flanks, each of these flanks comprising a stiff material layer. The
stiff material layer and the metal fiber fleece are connected using a layer of
ceramic adhesive, which prevents direct contact of the metal fiber fleece over
the length of the edge of the metal fiber fleece with the flank. Meanwhile the
flanks, being essentially perpendicular to the pleating lines, closing the pleat
openings in order to prevent bypasses.