Abstract: The invention relates to a case seal (6) for cross-divided crank cases, comprising an upper section (1) and a lower shell (2) (see figure). Both halves of the crank case have bearing seats (3, 4) for bearing (5) a shaft. The inventive case seal (6) is characterized in that it is configured as a single-piece elastic shaped part which can be placed on one half of a crank case along the sealing surfaces (7, 8) and the bearing seats (3, 4). Preferably, the case seal also consists of a second elastic shaped part (11) which can be inserted into the bearing seat (3) of the second half (1) of the crank case that is not provided with the first sealing part (6).