Metal seal construction

Claim 1

A MATAL SEAL CONSTRUCTION FOR SEALING BETWEEN SPACED METALLIC MEMBERS, THE SEAL BEING GENERALLY ANNULAR IN FORM AND HAVING, AS SEEN IN TRANSVERSE SECTION AND WITHOUT EXTERNAL FORCE APPLIED THERETO, A SHAPE COMPRISING: AN AXIALLY EXTENDING BASE PORTION; A PAIR OF ARM HAVING ASIALLY SPACED ROOTS FORMED INTEGRALLY WITH THE BASE AND EXTENDING GENERALLY RADIALLY INWARDLY THEREFROM AND DIVERGENT FROM ONE ANOTHER, WHEREBY THE DISTAL ENDS OF THE ARMS ARE SPACED APART SUBSTANTIALLY MORE THAN SAID ROOTS, THE AXIALLY OUTWARDLY FACING SURFACES OF THE ARMS BEING CONCAVE THROUGHOUT SUBSTANTIAL PORTIONS THEREOF FROM THE DISTAL ENDS TOWARD THE ROOTS AND THE AXIALLY OUTERMOST EDGES OF SAID ARMS CONSTITUTING SEALING EDGES IN CONTINUOUS LINE CONTACT WITH SAID SPACED METALLIC MEMBERS; AND A REINFORCING CENTRAL LEG FORMED INTEGRALLY WITH THE BASE INTERMEDIATE THE ARMS AND EXTENDING RADIALLY INWARDLY FROM THE BASE SUBSTANTIALLY THE SAME DISTANCE AS THE RADIAL EXTENT OF THE ARMS.