US Patent 7803327 Exhaust gas treatment device and the respective manufacturing process

An exhaust gas treatment device for an exhaust gas system of an internal combustion engine, in particular of a motor vehicle, includes a housing and at least one exhaust gas treatment insert arranged in the housing and sheathed by bearing material on the circumference. To improve the axial fixation of the position of the exhaust gas treatment insert in the housing, at least one frictional structure is provided between the bearing material and the housing.