This study registers a finite element analysis of a seal boot used in constant velocity driveshafts. By this analysis the structure's behavior is studied in its work life before construction of the actual prototype. Prototype development time can be saved in the design phase since the part can be improved by this theoretical prediction tool. Failure points are predicted by the analysis saving resources such as developing production tools, making prototypes and testing them to finally detect the items that have to be improved.Analysis are made regarding an existing seal rubber boot. Then the results of general part are examined and contrasted with laboratory test reports of the real part.