Abstract: In a housing (3) of an attachment piece (1), at least one hollow core space (5) for receiving one end of a corrugated tube (2) is available. In this hollow core space (5) between the corrugated tube (2) and the housing (3), a sleeve (4) is disposed into which the end of the corrugated tube (2) is inserted. On this sleeve (4) elastic elements (15, 16) are present which are pressed toward an axis (29) of the attachment piece (1), through an outer ring (23) on the housing (3). At least one of the elastic elements (15, 16) is equipped with one positioning element (20) and a locking element (24), with these elements (20, 24) engaging an aperture (21) in the housing (3). The connection between corrugated tube (2) and housing (3) can only be broken with an auxiliary tool and is therefore protected against unintentional detachment.

Abstract: The specification describes a connector fitting for flexible corrugated tubing having parallel, coaxial corrugations; the connector comprising a bushing with a housing for accommodating in use the end of a length of corrugated tubing which housing is provided with at least one opening for receiving a locking element which is generally C-shaped in form and has resilient legs, the inner surface of the locking element is provided with a plurality of ribs the thickness of which corresponds approximately to the spacing of adjacent corrugations of the tubing and the opening in the housing is bounded by a pair of bridge pieces separation of which is substantially the same as the distance between the outermost surfaces of the legs of the locking element. A seal may be provided which in use lies between the outer surface of the corrugated tubing and the inner surface of the housing, the seal having a toroidal end part lying between the end of the corrugated tubing and a stop formed in the housing.