A permanent joint includes a fitting, a sleeve, and a pipe. The fitting exhibits a base body, an outer body and a supporting body, wherein the outer body and supporting body form a groove between them, the inner peripheral surface of the outer body exhibits at least one latching groove, and the outer peripheral surface of the supporting body exhibits a sealing surface inclined relative to the axis of the fitting. The sleeve exhibits at least one latching projection arranged on the outer peripheral surface and at least one open slit running in the axial direction, wherein at least one fixing projection is arranged on the inner peripheral surface in the area of the latching projection. The sleeve embraces a pipe end under a pre-stress, wherein the pipe end with the sleeve engages into the groove under a pre-stress, and the latching groove and latching projection create a frictional connection.