An apparatus for the injection of a fluid filler material includes a static mixer (1), with the static mixer including a housing (2) which includes a first hollow space (47), with at least one mixer element (3) being arranged in the first hollow space. The housing (2) has an outlet element (45). The outlet element (45) has a second hollow space (48), with the second hollow space (48) being connected to the first hollow space (47) such that the fluid filler material can be conducted from the first hollow space (47) into the second hollow space (48). A tubular element (60) is held in the second hollow space (48). (Fig. 3)
