The invention relates to a container (1) including an outer shell having two flexible walls (2) combined together so as to from at least one main compartment (3) containing or intended to contain a fluid, said container (1) further including at least one flow pipe (4), one end of which leads into said main compartment (3), and the other end of which extends beyond said flexible walls (2), said flow pipe (4) being combined with said flexible walls (2) along a proximal joint (6) and a distal joint (7) that is separate from the proximal joint (6), said flexible walls (2) surrounding the portion of the flow pipe (4) between said joints (6, 7) so as to form a closed, inaccessible sealing chamber (8) around said flow pipe portion (4)..Linvention concerne un récipient (1) comprenant une enveloppe extérieure ayant deux parois souples (2) associe entre elles de sorte a former au moins un compartiment principal (3) contenant ou destine a contenir un fluide, ledit récipient (1) comprenant en outre au moins un conduit découlement (4) dont une extrémité débouche dans ledit compartiment principal (3) et Dautre extrémité sétend au delà desdites parois souples (2), ledit conduit découlement (4) étant associe audit parois souples (2) le long dun joint proximal (6) et dun joint distal (7) distinct du joint proximal (6), lesdites parois souples (2) enveloppant la partie du conduit découlement (4) comprise entre lesdits joints (6,7), de sorte a former, autour de ladite partie du conduit découlement (4), une chambre détanchéité (8) fermée et dépourvue daccès.