Rotating control device having improved seal

A rotating control device, comprising:

• a rotating section rotatably supported in a housing, the rotating section comprising a mandrel and a rotating seal element of a rotary seal, the rotating seal element sealingly affixed to an exterior of the mandrel;
• and
• wherein the housing has sealingly disposed therein a non-rotating seal element of the rotary seal, wherein the non-rotating seal element in at least partial axial alignment and partial radial alignment with the rotating seal element, the non-rotating seal element movable longitudinally with respect to the housing, the non-rotating seal element comprising a protrusion extending from a face of the non-rotating seal element disposed toward the rotating seal element wherein fluid pressure acting on the non-rotating seal element acts on a larger surface area on a face opposed to the rotating seal element than on a face of the non-rotating seal element disposed toward the rotating seal element.