A connector for flexible hoses, comprising, in combination: - a hollow main body forming an element for coupling with a flexible hose comprising at least two ramp-like annular elements (5a, 5b), separated by at least one circumferential recess and forming a housing for a sealing element, - and at least one clamping element designed to apply a force in a radial direction on the outer surface of the flexible hose when the flexible hose is coupled with the hollow main body, and operating in conjunction with a sealing element to allow, in use, a sealed coupling between the flexible hose and the hollow main body, the clamping element comprising: - a tubular base portion, designed to be stably locked to the hollow main body; - a plurality of longitudinal elements (47a, 47b, 47c) extending axially from the base portion in such a way as to surround the flexible hose when the latter is coupled with the hollow main body; - means (46a, 46b) for radial compression of the longitudinal elements (47a, 47b, 47c), designed for radially clamping the longitudinal elements (47a, 47b, 47c) in such a way as to radially compress the flexible hose, characterised in that the tubular base portion of the clamping element is stably coupled with the hollow main body, in such a way as to prevent rotation and translation of said portion of the clamping element relative to the hollow main body, and in that at least one sealing element, designed to be positioned in the recess is provided to the said connector; and in that the recess for housing the sealing element comprises a pair of lateral walls (102, 103), at least one of the lateral walls (102, 103) having a concavity inversion profile in the direction of the axis of extension of the hollow main body. - a hollow main body forming an element for coupling with a flexible hose comprising at least two ramp-like annular elements (5a, 5b), separated by at least one circumferential recess and forming a housing for a sealing element, - and at least one clamping element designed to apply a force in a radial direction on the outer surface of the flexible hose when the flexible hose is coupled with the hollow main body, and operating in conjunction with a sealing element to allow, in use, a sealed coupling between the flexible hose and the hollow main body, the clamping element comprising: - a tubular base portion, designed to be stably locked to the hollow main body; - a plurality of longitudinal elements (47a, 47b, 47c) extending axially from the base portion in such a way as to surround the flexible hose when the latter is coupled with the hollow main body; - means (46a, 46b) for radial compression of the longitudinal elements (47a, 47b, 47c), designed for radially clamping the longitudinal elements (47a, 47b, 47c) in such a way as to radially compress the flexible hose, characterised in that the tubular base portion of the clamping element is stably coupled with the hollow main body, in such a way as to prevent rotation and translation of said portion of the clamping element relative to the hollow main body, and in that at least one sealing element, designed to be positioned in the recess is provided to the said connector; - a tubular base portion, designed to be stably locked to the hollow main body; - a plurality of longitudinal elements (47a, 47b, 47c) extending axially from the base portion in such a way as to surround the flexible hose when the latter is coupled with the hollow main body; - means (46a, 46b) for radial compression of the longitudinal elements (47a, 47b, 47c), designed for radially clamping the longitudinal elements (47a, 47b, 47c) in such a way as to radially compress the flexible hose, characterised in that the tubular base portion of the clamping element is stably coupled with the hollow main body, in such a way as to prevent rotation and translation of said portion of the clamping element relative to the hollow main body, and in that at least one sealing element, designed to be positioned in the recess is provided to the said connector;