A wellhead assembly, comprising: an outer wellhead member having an inner surface that defines a bore; an inner wellhead member having an external surface located in the bore, the inner surface of the outer wellhead member and the external surface of the inner wellhead member defining a wellhead annulus within the bore; an annular metal seal member located in the wellhead annulus having an inner annular seal leg and an outer annular seal leg, the seal legs defining an annular slot between them, the annular metal seal member having a base on its lower end adapted to abut a shoulder defined in the wellhead annulus, the annular metal seal member further comprising an outer seal band on the outer annular seal leg operable to form a sealing surface against the inner surface of the outer wellhead member when in a set position, and an inner seal band on the inner annular seal leg operable to form a sealing surface against the external surface of the inner wellhead member when in the set position; an energizing ring located in the wellhead annulus above the annular metal seal member and carried in a run-in position with a lower end engaging an upper end of the annular slot; a bulk seal located in the wellhead annulus above and coupled to the energizing ring, the bulk seal in sealing engagement between the inner surface of the outer wellhead member and the external surface of the inner wellhead member, the bulk seal forming a pressure barrier such that increasing fluid pressure in the area of the wellhead annulus above the bulk seal causes the bulk seal to move axially toward the annular metal seal member, forcing the energizing ring into the annular slot formed by the seal legs, the energizing ring exerting radial forces on the seal legs to seal the seal bands against the inner and outer wellhead members, defining the set position; and a compressible element located within the annular slot formed by the seal legs of the annular metal seal member, the compressible element being configured to decrease in volume as the energizing ring moves into the annular slot. an outer wellhead member having an inner surface that defines a bore; an inner wellhead member having an external surface located in the bore, the inner surface of the outer wellhead member and the external surface of the inner wellhead member defining a wellhead annulus within the bore; an annular metal seal member located in the wellhead annulus having an inner annular seal leg and an outer annular seal leg, the seal legs defining an annular slot between them, the annular metal seal member having a base on its lower end adapted to abut a shoulder defined in the wellhead annulus, the annular metal seal member further comprising an outer seal band on the outer annular seal leg operable to form a sealing surface against the inner surface of the outer wellhead member when in a set position, and an inner seal band on the inner annular seal leg operable to form a sealing surface against the external surface of the inner wellhead member when in the set position; an energizing ring located in the wellhead annulus above the annular metal seal member and carried in a run-in position with a lower end engaging an upper end of the annular slot; a bulk seal located in the wellhead annulus above and coupled to the energizing ring, the bulk seal in sealing engagement between the inner surface of the outer wellhead member and the external surface of the inner wellhead member, the bulk seal forming a pressure barrier such that increasing fluid pressure in the area of the wellhead annulus above the bulk seal causes the bulk seal to move axially toward the annular metal seal member, forcing the energizing ring into the annular slot formed by the seal legs, the energizing ring exerting radial forces on the seal legs to seal the seal bands against the inner and outer wellhead members, defining the set position; and a compressible element located within the annular slot formed by the seal legs of the annular metal seal member, the compressible element being configured to decrease in volume as the energizing ring moves into the annular slot.