ROTARY END FACE SEAL ASSEMBLY

An improved rotary end face seal assembly used singly or in combination with other seals, preventing escape of a contained pressurized medium, gas or liquid, through the annulus between a stationary housing and a rotating shaft, comprises a rotary assembly and a stationary assembly. One of either the rotary assembly or stationary assembly is axially movable and usually spring mounted. A rotor and stator component of the respective assemblies have sealing faces in close sliding proximity. One of either the rotor or stator is a composite ring comprising an interlocked pair of annular rings, an outermost of which constrains an innermost ring of dissimilar material. A protruding seal face extends axially from this innermost ring or from the mating seal ring of dissimilar material. Support rings for each of the rotor and stator are precisely matched with the corresponding seal ring to achieve precise control of the seal ring deformation. An isolation ring may act as an adaptor to separate a support ring from any given mounting component.