Well tool seal

Claim 1

A WELL TOOL SIZED FOR PASSAGE THROUGH A WELL BORE AND HAVING BODY MEMBERS, A FLUID PRESSURE CHAMBER FORMED WITHIN SAID BODY MEMBERS, AN ANNULAR RECESS IN SAID BODY MEMBERS AT ONE END OF SAID FLUID PRESSURE CHAMBER, A FIRST METALLIC ANNULAR RING MEMBER IN SAID RECESS, SAID FIRST RING MEMBER HAVING AN INCLINED SURFACE, AND A SECOND METALLIC ANNULAR RING MEMBER IN SAID RECESS, SAID SECOND RING MEMBER HAVING AN INCLINED SURFACE SLIDABLY ENGAGING THE INCLINED SURFACE OF THE FIRST RING MEMBER, SAID RECESS HAVING MEANS FOR HOLDING ONE OF SAID RING MEMBERS AGAINST LONGITUDINAL MOVEMENT IN ONE DIRECTION WHILE PERMITTING LONGITUDINAL MOVEMENT OF SAID OTHER RING MEMBER, SAID RING MEMBERS HAVING SURFACE MEANS RADIALLY EXPANDABLE UPON RELATIVE LONGITUDINAL MOVEMENT OF SAID RING MEMBERS FOR SEALINGLY ENGAGING SAID BODY MEMBERS, AND MEANS FOR PROVIDING A HIGH PRESSURE FLUID COMMUNICATION PATH BETWEEN SAID FLUID PRESSURE CHAMBER AND SAID OTHER RING MEMBER.