A coupling (10) for receiving and retaining the end of a conduit. The coupling (10) includes a leading body part (12), a grab ring (14), a sealing ring (16), a trailing body part (18) and a sleeve (11). The trailing body part (18) has an outer surface portion (46) which is inclined to diverge outwardly and a rear face (20) that extends from a trailing end of the outer surface (46), and that faces axially. The sleeve (11) extends circumferentially around the leading body part (12), the grab ring (14), the sealing ring (16) and the trailing body part (18). The sleeve (11) includes a forward end (24) for engaging the leading body part (12) a first axial portion (23) which extends from the forward end (24), an inclined portion (22) which extends from the axial portion (23) and which is inclined complimentary to the outer surface portion (46). The sleeve (11) further includes a trailing end portion (21) that extends from the inclined portion (22) to overlie the rear face (20) of the trailing body part (18) in close facing relationship. The sleeve (11) is operable to resist movement of the leading and trailing body parts (12, 18) axially away from each other.