Rotary seal

A seal housing comprising a body (30) having a longitudinal axis and a transverse axis, said body having a bore there through along said longitudinal axis thereby defining longitudinally extending interior and exterior surfaces of said housing, said body and said interior and exterior surfaces terminating at first and second opposed transversely contoured ends (43,44), said first end of said body (44) having a first transverse slot (71), said second end of said body (43) having second and third spaced apart transverse slots (60,61), said second and third slots being physically separated from one another in said body, said first slot and said second and third slots terminating in said body at opposed internal ends (70,72) thereby leaving a body section (73) between said internal end of said first slot and said opposing internal ends of said second and third slots, at least one of said interior and exterior surfaces carries at least one seal member (46), said first transverse slot extends longitudinally into said body and transversely of said body along said transverse contour of said first end, said second and third transverse slots extend longitudinally into said body and transversely of said body along said transverse contour of said second end, said second and third slots are not in fluid communication with one another in a transverse manner, a first set of a plurality of said apertures (63) establishes first fluid communication between said first slot and said second slot and a second set of a plurality of different apertures (64) establishes second fluid communication between said first slot and said third slot which second fluid communication is independent of said first fluid communication, and said body has at least one port (37) between the exterior surface and said second slot (60) and at least one port (38) between the exterior surface and said third slot (61), whereby fluid entering said body by way of one of said first and second ports passes through one set of said apertures into said first groove and from said first groove back through the other set of said apertures to reach an exit port.