Patent ID: 7100950

Claim:
A connecting element for transporting gaseous, liquid or solid substances, comprising: a tubular coupling having an internal cylindrically running first recess in which a corrugated tube is arranged and an internal circular groove; a cylindrically extending second recess adjoining the first recess; an annular seal arranged adjacent to the first recess and within the second recess, the annular seal being further arranged to engage the corrugated tube from outside the tube; an expanding ring arranged adjacent to the annular seal and within the second recess, the expanding ring comprising a first and a second projection, the first projection extending towards the tubular coupling and arranged to engage the internal circular groove and the second projection extending towards the corrugated tube so as to engage the corrugated tube between corrugations; and the annular seal is arranged to engage the corrugated tube from outside the corrugated tube.