As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING DISASSEMBLY FOR NR 2 BEARING HOUSING REPAIR (SB72-900500), A DEFECTIVE O-RING WAS FOUND ON THE FRONT PANEL ASSY. O-RING PN WAS AN SU-326. THE PACKING APPEARED PINCHED FROM ASSY OF THE NR1 BRG HSG ONTO THE FRONT PANEL ASSY.