Abstract: An externally-mounted, stationary-design, self-aligning, rotary face-seal is provided for securement to a rotatable shaft member extending through a housing of equipment containing a media (e.g. liquid, gas or granular solids) which is to be sealed therein. The seal includes a diametrically-split mounting plate having a plurality of spaced-apart recesses in a face thereof, the assembled mounting plate being secured in sealed relation to the housing of the equipment and with the rotatable shaft member extending through the mounting plate and projecting into an ambient environment exteriorly of the housing. The seal includes a diametrically-split stator face disposed in the ambient environment. A face of the stator is fitted with spaced-apart anti-rotation guide pins, the projecting ends of the guide pins being disposed within the associated recesses in a face of the mounting plate. A resilient spring member is captured on each respective guide pin. One end of the spring member abuts a face of the stator.

Abstract: The present invention is particularly concerned with rotary end face seals of the type including a pair of annular sealing members disposed in relatively rotatable sealing proximity about a rotation axis. Each of these annular members typically includes a radially arranged annular sealing surface with these sealing surfaces being in face-to-face sealing proximity with one another during use so as to define a radially arranged annular sealing interface which separates a region of higher pressure from a region of lower fluid pressure. The invention particularly provides an annular heat exchanger which, in use, surrounds the annular sealing members in radially spaced relation thereto to define, within one of the above-noted regions, an annular zone of fluid pressure between the heat exchanger and the sealing members.