A hydraulic fitting with a sealing element: comprising: a fluid passageway extending along a longitudinal axis of said fitting a groove having an annular ring around the fluid passageway defining an inner, an outer and a bottom face, said bottom face extending between the outer face and the inner face, said sealing element having a top section comprising a first surface configured to bear against an outer face of the annular groove of said fitting; and a second surface intersecting the first surface at a first angle, wherein the second surface is configured to bear against a bottom face of the annular groove of the fitting; said sealing element further having a bottom section, comprising: a third surface intersecting the second surface at a second angle, wherein the third surface is configured to bear against the bottom face of the annular groove; and a fourth surface intersecting the third surface; and an indentation formed at an intersection between the second surface and the third surface, wherein the indentation provides a transition between a first width of the top section and a second width of the bottom section, wherein the second width is greater than the first width; wherein the sealing element extends as a continuous structure along a circumferential axis such that a conical plane that extends circumferentially through the center of the sealing element is oriented at a third angle to the longitudinal axis of said fitting, wherein the third angle is greater than 90 and less than 180 degrees, characterised by that the cross-section of the sealing element defined by a plane comprising the longitudinal axis, is arranged substantially symmetrical about the intersection line between said cross-section of the sealing element and said conical plane. comprising: a fluid passageway extending along a longitudinal axis of said fitting a groove having an annular ring around the fluid passageway defining an inner, an outer and a bottom face, said bottom face extending between the outer face and the inner face, a fluid passageway extending along a longitudinal axis of said fitting a groove having an annular ring around the fluid passageway defining an inner, an outer and a bottom face, said bottom face extending between the outer face and the inner face, said sealing element having a top section comprising a first surface configured to bear against an outer face of the annular groove of said fitting; and a second surface intersecting the first surface at a first angle, wherein the second surface is configured to bear against a bottom face of the annular groove of the fitting; a first surface configured to bear against an outer face of the annular groove of said fitting; and a second surface intersecting the first surface at a first angle, wherein the second surface is configured to bear against a bottom face of the annular groove of the fitting; said sealing element further having a bottom section, comprising: a third surface intersecting the second surface at a second angle, wherein the third surface is configured to bear against the bottom face of the annular groove; and a fourth surface intersecting the third surface; and a third surface intersecting the second surface at a second angle, wherein the third surface is configured to bear against the bottom face of the annular groove; and a fourth surface intersecting the third surface; and an indentation formed at an intersection between the second surface and the third surface, wherein the indentation provides a transition between a first width of the top section and a second width of the bottom section, wherein the second width is greater than the first width; wherein the sealing element extends as a continuous structure along a circumferential axis such that a conical plane that extends circumferentially through the center of the sealing element is oriented at a third angle to the longitudinal axis of said fitting, wherein the third angle is greater than 90 and less than 180 degrees, characterised by that the cross-section of the sealing element defined by a plane comprising the longitudinal axis, is arranged substantially symmetrical about the intersection line between said cross-section of the sealing element and said conical plane.