Multiple purpose self-loading machinery packing

Claim 1

IN MACHINERY INCLUDING A BORE AND A CENTRAL MEMBER DISPOSED WITHIN SAID BORE AND SPACED THEREFROM TO DEFINE AN ANNULAR CAVITY F A TRANSVERSE CROSS-SECTION WIDTH W ABOUT A CENTRAL MEMBER, A RESILIENT PACKING-RING DISPOSED IN SAID CAVITY, SAID PACKING-RING COMPRISING A PACKING-RING MEMBER INCLUDING AN UPPER SURFACE AND HAVING A CROSS-SECTION COMPRISING A BASE PORTION OF WIDTH LESS THAN W AND AN UPPER, DEFORMABLE, BIFURCATED PORTION CONSTRUCTED TO DELINEATE AN ANNULAR RECESSED AREA OF UNDERCUT CHARACTER WHICH IS CONTIGUOUS WITH AND MEDIALLY DEPENDS FROM SAID UPPER SURFACE AND WHICH IS CONFORMABLE TO AN O-RING SNAP-SEATED THEREIN, AND AN O-RING SNAP-SEATED IN SAID ANNULAR RECESSED AREA, SAID RECESSED AREA CONFORMING TO SAID O-RING SNAP-SEATED THEREIN, AND SAID O-RING PROTRUDING ABOVE SAID UPPER SURFACE, SAID BIFURCATED PORTION WITH SAID O-RING SEATED IN SAID ANNULAR RECESSED AREA BEING OF NOMINAL WIDTH GREATER THAN W, SAID PACKING-RING BEING COMPRESSED WIDTH-WISE ALONG SAID BIFURCATED PORTION OF ITS SAID CROSS-SECTION THROUGH THE CONSTRAINMENT THEREOF BY BOUNDARIES OF SAID CAVITY DEFINING WIDTH W, AND WHEREIN EACH OF SAID PACKING-RING AND O-RING IS PROVIDED WITH A RESPECTIVE SLIT INTERRUPTION, SAID SLIT INTERRUPTION BEING MUTUALLY DISPLACED.