the elastomer seal 15 it also makes the assembly seal the ancillaries being force fitted into their ducts 25 with reference to fig6 and 7 an ancillaries distribution support 35 is arranged on the ring 34 of the turbojet engine 10 placed adjacent to the ancillaries passage assembly 53 the support 35 comprises a first sole plate on the outer side of the ring 34 for reception of ancillaries 38 projecting outside the ring the sole plate 36 has a rounded triangular shape the base of which is located on the upstream side of the ring 34 at the arm 12 and the vertex is on the output side of the ring 34 the width of the base corresponds approximately to the transverse width of the arm 12 the first sole plate 36 comprises ancillary reception duct 37 opening up on its outer surface ancillaries 38 originating from outside the intermediate casing 11 are inserted in the ducts 25 of the elastomer seal 15 extending along a radial support 39 parallel to the arm 12 installed between the intermediate casing 11 and the ring 34 and their ends are force fitted into the ducts 37 of the sole plate 36 with reference to fig8 the end of the ancillaries 38 comprises a special end piece composed of an annular seal 40.