Sealing joint axially supported by friction between parts in rotation in relation to one another in a machine

Claim 1

SEALING MEANS COMPRISING AN ANNULAR SEALING MEMBER PROVIDED WITH AN ANNULAR AXIALLY EXTENDING PROJECTION, A COAXIAL SEALING MEMBER ON WHICH SAID ANNULAR SEALING MEMBER IS MOUNTED TO FLOAT FREELY, SAID COAXIAL SEALING MEMBER COMPRISING A RESILIENT PORTION WHICH IS FREE TO FLEX AXIALLY OF SAID SEALING MEANS AND IS PROVIDED IN ITS ELASTICALLY RELAXED STATE WITH AN ANNULAR RECESS ALIGNED TO RECEIVE SAID PROJECTION, A THICK MASS OF RESILIENT MATERIAL FORMING PART OF SAID RESILIENT PORTION AND PROVIDED WITH A CURVED SURFACE CONSTITUTING ONE SIDE OF SAID RECESS, SAID SURFACE CURVING FROM THE BOTTOM OF SAID RECESS TOWARD ITS MOUTH SO THAT SAID RECESS IS WIDER AT ITS MOUTH THAN AT ITS BOTTOM, THE ADJACENT SIDE OF SAID PROJECTION CURVING IN THE SAME DIRECTION AS THE CURVED SIDE OF SAID RECESS, THE CURVATURE OF SAID RECESS SIDE BEING GREATER THAN THAT OF SAID PROJECTION SIDE SO THAT A CAVITY IS FORMED THEREBETWEEN INTO WHICH A PORTION OF SAID MASS IS FORCED WHEN SAID SEALING MEMBERS ARE SQUEEZED TOGETHER, THEREBY CAUSING SAID PROJECTION TO BECOME MORE FIRMLY HELD IN SAID RECESS.