A method of testing the integrity of a sealing ring of a flexible pipe, characterised in that the method comprises: providing a primary pressure-retaining end fitting component (402, 734) to cover an open mouth of a flexible pipe body (404, 704); locating a first sealing ring (420, 720) adjacent a first collar member (414, 714) and a layer (406, 706) of the flexible pipe body, wherein the first sealing ring (420, 720) is provided between the primary pressure-retaining end fitting component (402, 734), the first collar member (414, 714) and the layer (406, 706) of flexible pipe body; locating a second sealing ring (422, 722) adjacent the first collar member (414, 714) and a second collar member (416, 716), wherein the second sealing ring (422, 722) is provided between the first collar member (414, 714), the second collar member (416, 716) and the layer (406, 706) of flexible pipe body; energising the first sealing ring by urging the sealing ring towards the primary pressure-retaining end fitting component, or by urging the pressure-retaining component towards the sealing ring; energising the second sealing ring by urging the sealing ring towards the pressure-retaining end fitting component, or by urging the pressure-retaining end fitting component towards the sealing ring; and pressurising the region between the first sealing ring and the second sealing ring through a port (432, 732) extending towards the region to a predetermined pressure of 5 MPa or greater, and wherein the first and second sealing rings have a cross-section comprising a wedge-like portion, and wherein the first and second sealing rings are oriented in the same axial direction such that the wedge-like portion faces the end fitting component to which the flexible pipe body is connected. providing a primary pressure-retaining end fitting component (402, 734) to cover an open mouth of a flexible pipe body (404, 704); locating a first sealing ring (420, 720) adjacent a first collar member (414, 714) and a layer (406, 706) of the flexible pipe body, wherein the first sealing ring (420, 720) is provided between the primary pressure-retaining end fitting component (402, 734), the first collar member (414, 714) and the layer (406, 706) of flexible pipe body; locating a second sealing ring (422, 722) adjacent the first collar member (414, 714) and a second collar member (416, 716), wherein the second sealing ring (422, 722) is provided between the first collar member (414, 714), the second collar member (416, 716) and the layer (406, 706) of flexible pipe body; energising the first sealing ring by urging the sealing ring towards the primary pressure-retaining end fitting component, or by urging the pressure-retaining component towards the sealing ring; energising the second sealing ring by urging the sealing ring towards the pressure-retaining end fitting component, or by urging the pressure-retaining end fitting component towards the sealing ring; and pressurising the region between the first sealing ring and the second sealing ring through a port (432, 732) extending towards the region to a predetermined pressure of 5 MPa or greater, and wherein the first and second sealing rings have a cross-section comprising a wedge-like portion, and wherein the first and second sealing rings are oriented in the same axial direction such that the wedge-like portion faces the end fitting component to which the flexible pipe body is connected.