What was found
(CAN) ENGINE NR 1 LOW OIL PRESSURE INDICATION IN CRUISE FLIGHT. ENGINE OIL LOW PRESSURE CHECKLIST COMPLETED AND NR 1 ENGINE SHUTDOWN AND PROPELLER FEATHERED. FLIGHT CONTINUED AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND OIL LEAK EMANATING FROM THE OIL SEAL ASSY BETWEEN THE ACCESSORY GEARBOX AND DC STARTER GENERATOR ON THE NR 1 ENGINE. THE OIL SEAL WAS REPLACED AND ENGINE GROUND RUN FOR LEAKS WITH NO DEFECTS NOTED, ACFT SUBSEQUENTLY RELEASED FOR SERVICE.