Abstract: A coupling device adapted for connecting conduits or the like which carry pressurized fluid and essentially embodies first and second coupling members, a pair of sealing members and retaining means. The first coupling member is arranged to be connected to the conduit and includes first and second spaced generally peripheral grooves, each of which is defined by respective first and second pairs of shoulders, and a peripheral depression formed adjacent one of the second pair of shoulders remote from the first groove. The pair of sealing elements are arranged such that respective ones thereof are suitably received within the first and second grooves for providing a fluid-tight seal. The second coupling member detachably receives the first coupling member and includes at least first and second bores which respectively slidably receive the first and second sealing members, and first and second openings which extend generally transversely to the longitudinal axis of the first and second bores.