As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NUT FOR NR 1 BEARING HAVE, ON SEVERAL OCCASIONS, BEEN RECEIVED NEW WITH DAMAGED BLACK NYLON (ZYTEL) MATERIAL AT TOP OF NUT. THERE IS THE POTENTIAL FOR LEAKS THROUGH THIS MATERIAL. THREE RECENT SHIPMENTS (TOTALLING OVER 100 NUTS) HAVE BEEN FOUND WITH DAMAGE TO THIS SEALING MATERIAL.