초록 ▼

A tubular element has a sealing ring mounted at an end of the tubular element. The sealing ring has a base clamped against the outer surface of the tubular element. Further, the sealing ring has a sealing lip adapted to seal against an inner surface of an outer tube, in which the tubular element is

A tubular element has a sealing ring mounted at an end of the tubular element. The sealing ring has a base clamped against the outer surface of the tubular element. Further, the sealing ring has a sealing lip adapted to seal against an inner surface of an outer tube, in which the tubular element is inserted. The base is disposed in a groove that is formed in the wall of the tubular element. The sealing ring has a further lip that is positioned adjacent to the end of the tubular element and that is bent down and clamped against the base by means of the end portion, thereby providing secure fastening of the sealing ring. The sealing ring is fastened by a method involving bending of the end portion of the tubular element together with the further lip.

대표청구항 ▼

[ What is claimed is:] [1.] A tubular element for use in a fluid-conducting duct system, in particular a ventilation duct system, comprising an external, circumferential, flexible sealing ring mounted at an end of the tubular element, the tubular element having a wall defining an outer surface, a ci

[ What is claimed is:] [1.] A tubular element for use in a fluid-conducting duct system, in particular a ventilation duct system, comprising an external, circumferential, flexible sealing ring mounted at an end of the tubular element, the tubular element having a wall defining an outer surface, a circumferential groove formed in the outer surface of the wall, and a free end portion disposed at an end of the wall, the sealing ring comprising:a base which is clamped against the outer surface of the tubular element by means of the free end portion of the tubular element, which is bent radially outwards and turned back towards the outer surface of the tubular element,a sealing lip extending substantially radially away from said base and adapted to seal against an inner surface of an outer tube, in which the tubular element is inserted, the base of the sealing ring being disposed in the circumferential groove that is formed in the wall of the tubular element and which has an axial width matching the axial width of said base, anda further lip or projection which is positioned adjacent to the end of the tubular element and which is axially spaced from the main sealing lip, said further lip extending substantially radially away from said base before said bending of the end portion of the tubular element, and said further lip being bent down and clamped against said base by means of said free end portion by said bending.