An apparatus for coupling fluid tube and male coupling and assembly including apparatus and male coupling

A device (1) for coupling a fluid pipe and a male coupling and an assembly comprising the device (1) and the male coupling, the device (1) comprising: a female coupling (2) that can be pushed togetherwith the male coupling; a ring (3) insertable between the couplers and provided with retaining means; and a seal (7) housed in the female coupling (2) and held in position by means of the ring (3). The device (4) for axially holding the ring (3) on the female coupling (2) comprises two windows (8) spaced apart in the circumferential direction on the body of the ring (3), a complementary holding device (6) belonging to the female coupling (2) comprises two lugs (9) protruding from a tubular body constituting the female coupling (2), an elastically deformable tongue part (10) is accommodated ineach window (8); the free end (13) of the tongue part (10) and the longitudinal edge (12) of the window (8) form a containing part (27); when the female coupling (2) and the ring (3) are pushed together, one lug (9) is insert