A hydraulically damped hinge (1; 101) for hinging a closure member to a support, the hinge comprising: - a first hinge member (10; 110) configured to be fixed to one of: the support and the closure member, the first hinge member (10; 110) comprising a cylinder barrel (17; 117) having a longitudinal direction (18; 118); - a second hinge member (11; 111) pivotably mounted on the first hinge member (10; 110), the second hinge member (11; 111) being configured to be fixed to the other one of: the support and the closure member; and - a dashpot interposed between said hinge members (10, 11; 110, 111) and configured for damping a closing movement of said closure member, the dashpot comprising: - said cylinder barrel (17; 117); - a closed cylinder cavity formed within the cylinder barrel (17; 117) and being filled with a volume of hydraulic fluid; - a damper shaft (24; 124) which extends into the cylinder cavity and is connected to the second hinge member (11; 111), the cylinder barrel (17; 117) and the damper shaft (24; 124) being rotatable with respect to one another about a rotation axis which is substantially parallel to the longitudinal direction (18; 118); - a piston (47; 147) within said cylinder cavity so as to divide the closed cylinder cavity into a high pressure compartment (48; 148) and a low pressure compartment (49; 149), the piston (47; 147) being operatively coupled to said damper shaft (24; 124) to be slideable between two extreme positions in said longitudinal direction (18; 118) upon a relative rotation between said cylinder barrel (17; 117) and said damper shaft (24; 124); and - a one-way valve allowing fluid flow from the low pressure compartment (49; 149) to the high pressure compartment (48; 148) when said closure member is being opened, characterized in that said hinge members (10, 11; 110, 111) are made of a synthetic material and in that the damper shaft (24; 124) is made of metal, and in that the dashpot further comprises a restricted fluid passage (66; 166) between the high pressure compartment (48; 148) and the low pressure compartment (49; 149) which determines a closing speed of the closure member, the restricted fluid passage (66; 166) being formed by a plurality of bores (66a, 66b, 66c) within the damper shaft (24; 124), at least one bore of said plurality of bores (66a, 66b, 66c) extending in said longitudinal direction (18; 118). - a first hinge member (10; 110) configured to be fixed to one of: the support and the closure member, the first hinge member (10; 110) comprising a cylinder barrel (17; 117) having a longitudinal direction (18; 118); - a second hinge member (11; 111) pivotably mounted on the first hinge member (10; 110), the second hinge member (11; 111) being configured to be fixed to the other one of: the support and the closure member; and - a dashpot interposed between said hinge members (10, 11; 110, 111) and configured for damping a closing movement of said closure member, the dashpot comprising: - said cylinder barrel (17; 117); - a closed cylinder cavity formed within the cylinder barrel (17; 117) and being filled with a volume of hydraulic fluid; - a damper shaft (24; 124) which extends into the cylinder cavity and is connected to the second hinge member (11; 111), the cylinder barrel (17; 117) and the damper shaft (24; 124) being rotatable with respect to one another about a rotation axis which is substantially parallel to the longitudinal direction (18; 118); - a piston (47; 147) within said cylinder cavity so as to divide the closed cylinder cavity into a high pressure compartment (48; 148) and a low pressure compartment (49; 149), the piston (47; 147) being operatively coupled to said damper shaft (24; 124) to be slideable between two extreme positions in said longitudinal direction (18; 118) upon a relative rotation between said cylinder barrel (17; 117) and said damper shaft (24; 124); and - said cylinder barrel (17; 117); - a closed cylinder cavity formed within the cylinder barrel (17; 117) and being filled with a volume of hydraulic fluid; - a damper shaft (24; 124) which extends into the cylinder cavity and is connected to the second hinge member (11; 111), the cylinder barrel (17; 117) and the damper shaft (24; 124) being rotatable with respect to one another about a rotation axis which is substantially parallel to the longitudinal direction (18; 118); - a piston (47; 147) within said cylinder cavity so as to divide the closed cylinder cavity into a high pressure compartment (48; 148) and a low pressure compartment (49; 149), the piston (47; 147) being operatively coupled to said damper shaft (24; 124) to be slideable between two extreme positions in said longitudinal direction (18; 118) upon a relative rotation between said cylinder barrel (17; 117) and said damper shaft (24; 124); and - a one-way valve allowing fluid flow from the low pressure compartment (49; 149) to the high pressure compartment (48; 148) when said closure member is being opened, characterized in that said hinge members (10, 11; 110, 111) are made of a synthetic material and in that the damper shaft (24; 124) is made of metal, and in that the dashpot further comprises a restricted fluid passage (66; 166) between the high pressure compartment (48; 148) and the low pressure compartment (49; 149) which determines a closing speed of the closure member, the restricted fluid passage (66; 166) being formed by a plurality of bores (66a, 66b, 66c) within the damper shaft (24; 124), at least one bore of said plurality of bores (66a, 66b, 66c) extending in said longitudinal direction (18; 118).