Patent ID: 7979986

Claim:
A method for securing a cartridge mechanical face seal assembly to a sleeve, comprising fabricating a cartridge mechanical face seal assembly with a rotary seal assembly including a rotary face to couple with a sleeve, said seal assembly having a bore, said bore perpendicular to a sleeve surface, a plunger disposed in said bore, a spring in said bore between said seal assembly and said plunger, thereby forming a loosely coupled mechanism, said loosely coupled mechanism being axially movable relative to said seal assembly, said loosely coupled mechanism having spring activated means for a plunger retracted position and spring activated means for said spring resiliently urging said plunger into an extended locked position; fabricating said sleeve for the cartridge mechanical face seal assembly, said sleeve having a bore of the same shape of said bore in said seal assembly, said bore in said sleeve extending completely through said sleeve, said sleeve bore being of a size to accept tightly said seal assembly plunger in said extended locked position, and said sleeve having a chamfered edge on the outside circumference of a leading edge of said sleeve; sliding said seal assembly onto said sleeve so that said chamfered edge of said sleeve urges said seal assembly plunger into the retracted position; positioning said seal assembly on said sleeve so that said seal assembly bore with retracted plunger is located coincident with said sleeve bore; and adjusting said cartridge mechanical face seal assembly so that said loosely coupled mechanism spring extends said plunger into the extended locked position in said sleeve bore.