Variable-geometry sealed coupling (R5) of the type of that connecting together two elements each arranged with a passage hole, the sealed coupling comprising two hollow bodies preformed to pivot relative to each other, with each body each comprising two ends, a first end and a second end , the two first ends being preformed to cooperate together and form a pivot connection, the two second free ends each cooperating with the passage hole of one of the elements to be connected, the axis (X1) of this pivot connection making it possible to switch the axes of the two free ends corresponding to the passage holes from a straight position to a bent position, one first end of one first of the bodies being preformed with a cylindrically protruding shape cooperating with a cylindrical cavity preformed in the first end of a second of the bodies to carrying on the pivot connection, at least one of the bodies (100d or 200d) being preformed in such a way that the axis (X2 or X3) of its second end corresponding to the passage hole of the element with which it is able to cooperate is offset with respect to the axis of the pivot connection (X1), and is therefore not secant nor is it confounded with the axis of the pivot connection (X1) that it forms with the other of the bodies in such a way that the rotation of the bodies together is facilitated due to the out-of-roundness of the axes. CHARACTERIZED IN THAT a clamping ring (Bs), guided in rotation at a first end of the first body , by screwing cooperates with a thread preformed on the first end of the second body , which makes it possible to block the two bodies (100d and 200d) in position once the correct angular position is reached. the sealed coupling comprising two hollow bodies preformed to pivot relative to each other, with each body each comprising two ends, a first end and a second end , the two first ends being preformed to cooperate together and form a pivot connection, the two second free ends each cooperating with the passage hole of one of the elements to be connected, the axis (X1) of this pivot connection making it possible to switch the axes of the two free ends corresponding to the passage holes from a straight position to a bent position, one first end of one first of the bodies being preformed with a cylindrically protruding shape cooperating with a cylindrical cavity preformed in the first end of a second of the bodies to carrying on the pivot connection, at least one of the bodies (100d or 200d) being preformed in such a way that the axis (X2 or X3) of its second end corresponding to the passage hole of the element with which it is able to cooperate is offset with respect to the axis of the pivot connection (X1), and is therefore not secant nor is it confounded with the axis of the pivot connection (X1) that it forms with the other of the bodies in such a way that the rotation of the bodies together is facilitated due to the out-of-roundness of the axes. CHARACTERIZED IN THAT a clamping ring (Bs), guided in rotation at a first end of the first body , by screwing cooperates with a thread preformed on the first end of the second body , which makes it possible to block the two bodies (100d and 200d) in position once the correct angular position is reached. <EOS>