Connection joint for a first tubular element and a second tubular element provided with a flange, the tubular elements (T, 10) being suitable for the transport of fluids, in particular fluids under pressure such as compressed air or others, wherein the connection joint comprises: a deformable integral ring provided internally and frontally with seats (101, 201) to house seals (2, 3, 4); seals (2, 3, 4) seated in the seats (101, 201) of the internal ring, wherein internal seals (3, 4) of said seals are adapted to be placed around and compressed against the first tubular element, when the first tubular element is inserted into the connection joint, wherein a frontal seal of said seals is adapted to be compressed against the second tubular element provided with the flange, when the second tubular element is connected to said first tubular element through the joint; an external housing, in which said deformable internal ring is housed and which is provided with a flange having fixing screws adapted to engage in said flange of the second tubular element; and seaming means adapted to prevent the extraction of the first tubular element, when inserted into the connection joint, wherein the seaming means is an annular seaming element and wherein the inner diameters of said internal ring and of said internal seals (3, 4) are greater than the outer diameter of said first tubular element so that said first tubular element is freely insertable inside said external housing, said internal ring and said internal seals (3, 4), and wherein said fixing screws of the external housing are adapted to be tightened on said flange of said second tubular element, resulting in a pressure of the external housing on the internal ring, so as to determine a substantially radial compression of the internal ring and of the internal seals (3, 4) around the first tubular element and a substantially axial compression of the front seal against said flange of the second tubular element; characterized in that a pushing ring is positioned between the seaming means and the internal ring. a deformable integral ring provided internally and frontally with seats (101, 201) to house seals (2, 3, 4); seals (2, 3, 4) seated in the seats (101, 201) of the internal ring, wherein internal seals (3, 4) of said seals are adapted to be placed around and compressed against the first tubular element, when the first tubular element is inserted into the connection joint, wherein a frontal seal of said seals is adapted to be compressed against the second tubular element provided with the flange, when the second tubular element is connected to said first tubular element through the joint; an external housing, in which said deformable internal ring is housed and which is provided with a flange having fixing screws adapted to engage in said flange of the second tubular element; and seaming means adapted to prevent the extraction of the first tubular element, when inserted into the connection joint, wherein the seaming means is an annular seaming element and wherein the inner diameters of said internal ring and of said internal seals (3, 4) are greater than the outer diameter of said first tubular element so that said first tubular element is freely insertable inside said external housing, said internal ring and said internal seals (3, 4), and wherein said fixing screws of the external housing are adapted to be tightened on said flange of said second tubular element, resulting in a pressure of the external housing on the internal ring, so as to determine a substantially radial compression of the internal ring and of the internal seals (3, 4) around the first tubular element and a substantially axial compression of the front seal against said flange of the second tubular element; characterized in that a pushing ring is positioned between the seaming means and the internal ring.