The invention relates to a method for producing a housing cover (1, 1`) for an internal combustion engine, especially cylinder head covers or oil pans, for detachable connection to the engine block (4`), especially by means of screws (2), comprising an elastomer seal (5, 2`) which contains a carrier frame (6, 3`) and which is used for sealing in a liquid-tight manner in relation to a surface of the cylinder head (3). The seal (5, 2`) is attached to the housing cover (1, l') in a non-detachable manner; the carrier frame (6, 3`) and the housing cover (1, l') are inserted into the injection moulding die and subsequently, the elastomer material (5, 2`) is injected into the die, whereupon a non-detachable connection (4) is produced between the carrier element (6, 3`) and the housing cover by means of vulcanisation.