Abstract: SEALING TERMINAL FOR TUBULAR DUCT This sealing terminal (2) for ainstallations duct (1) of tubular shape comprises: -a plug (4) comprising a threaded frustoconical part, the screw thread (6) of which is, for example, self-tapping, which can be when it is [sic] screwed into one end of the duct (1), -a manipulating head (8) with a peripheral shoulder (10) in the continuation of the plut (4), said peripheralo shoulder (10) being designed to face an edge face (1a) of the border around an opening of the duct (1), - and an annular seal (12) arranged against the peripheral shoulder (10).