Abstract: The invention relates to a leaktight container (1) having a flexible wall comprising a bag (2) formed from a flexible film arranged so as to define a leaktight interior volume and a through-opening, and means for fixing the bag (2) to a connecting device (4) for connecting the container (1) in a leaktight manner to a sterile enclosure equipped with a complementary connecting device (4), said fixing means comprising a fixing ring (6) arranged so as to allow the connecting device (4) to be fixed reversibly to the bag (2), said ring being made up of two concentric annular parts fitted one in the other, the external annular part being dimensioned so as to be force-fitted around the internal annular part and to exert a radial stress thereon, the portion of film delimiting the through-opening being gripped between the two annular parts.

Abstract: The invention relates to a leaktight container (1) having a flexible wall comprising a bag (2) formed from a flexible film arranged so as to define a leaktight interior volume and a through-opening, and means for fixing the bag (2) to a connecting device (4) for connecting the container (1) in a leaktight manner to a sterile enclosure equipped with a complementary connecting device (4), said fixing means comprising a fixing ring (6) arranged so as to allow the connecting device (4) to be fixed reversibly to the bag (2), said ring being made up of two concentric annular parts fitted one in the other, the external annular part being dimensioned so as to be force-fitted around the internal annular part and to exert a radial stress thereon, the portion of film delimiting the through-opening being gripped between the two annular parts.

Abstract: The disclosure relates to a modular shuttering block defining a through-housing that connects a first face of the modular block and a second face opposite the first face, for the reception of a filling material; the modular block being provided with means for assembling with at least one other block. According to the disclosure, the modular block is in the form of a right prism with isosceles triangular bases formed by the first and second faces. The disclosure also relates to an assembly formed by a plurality of such modular blocks and finds application notably for the production of swimming pool steps.