Patent ID: 8205890

Claim:
A metal seal assembly insertable into an annular recess, said annular recess comprising inner and outer annular recess walls, comprising: a rigid energizing metal ring comprising at least two energizing ring angled wedging energizing wall surfaces; a single metal sealing ring which defines a groove with at least two sealing ring angled wedging wall surfaces each being oriented at mating angles to said at least two energizing ring angled energizing wall surfaces for mating with said at least two energizing ring angled wedging energizing wall surfaces to provide a sliding wedging interaction along a length of said at least two energizing ring angled wedging energizing wall surfaces and said two sealing ring angled wedging wall surfaces to thereby urge an inner wing and an outer wing of said metal sealing ring to expand with respect to each other so as to be operable to produce an inner metal-to-metal seal and an outer metal-to-metal seal; at least one rounded protrusion on each of said inner wing and said outer wing for engagement with said inner and outer annular recess walls without embedding into said inner and outer annular recess wall to produce said inner metal-to-metal seal and said outer metal-to-metal seal; an initial seal mechanism positioned to engage at least one of said energizing metal ring and said metal sealing ring with sufficient force to form an initial metal-to-metal seal; said initial seal mechanism comprising a metal ring without wedging surfaces and threads; said metal ring positioned on an opposite end of the metal sealing ring from said energizing metal ring; said metal ring comprising a substantially first flat distal end and a substantially second flat distal end opposite the substantially first flat distal end; and said metal sealing ring having a substantially flat end that contacts with the first flat distal end of the metal ring of said initial seal mechanism.