Mechanical seal with hydro-pad face profile

A rotary end face seal arrangement to seal a fluid at high temperature and pressure for installation between a housing and a rotatable shaft disposed therein, comprising:

• a mating ring rotationally fixed to said shaft, said mating ring including an annular mating ring seal face;
• an axially movable primary ring retained within said housing, said primary ring including an annular primary ring seal face, said seal ring seal faces disposed in face-to-face sealing relation and defining a seal interface between a radial outer peripheral edge and a radial inner peripheral edge of one of said seal faces;
• a biasing element biasing said primary ring toward said mating ring;
• a plurality of hydro-pad recesses formed radially inwardly in said seal interface from a pressure side of said seal arrangement at peripherally spaced intervals;
• and
• a radial feeder groove formed radially inwardly on said same seal face from said pressure side of said seal arrangement between at least some of said hydro-pad recesses.