The U.S. aircraft register, updated daily
Parts

Plug Oil

No failure report names the plug oil. 7 FAA approvals let 5 companies make a replacement plug oil, Turbo Technologies LLC holding the most (3).

Approved replacement parts 7 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a plug oil and sell it as an approved part for the models named. These are the companies holding such approvals for a plug oil:

For these models most: Boeing 777 (2), Boeing 767 (2).

MakerPartReplacesFitsGrantedStatus
Turbo Technologies LLCPlug-Oil Seal 3/8 Dia x 5/16 Long (& Oversize) 18326TT+.01018326+.010Rolls-Royce 501-D13, 501-D13A, 501-D13D2024-07-02current
Turbo Technologies LLCPlug-Oil Seal 3/8 Dia x 5/16 Long (& Oversize) 18326TT18326Rolls-Royce 501-D13, 501-D13A, 501-D13D2024-07-02current
Spirit Aerosystems INCPLUG-OIL 256W2197-1256W2197-1Boeing 767-200 SERIES, 767-300 SERIES,...2010-09-13current
Gemini EngineeringPLUG-OIL 256W2197-1256W2197-1Boeing 767-200 Series, 767-300 Series,...2008-08-12current
Roush Industries INCPlug-Oil Hole RA-603814603814Rolls-Royce V-1650-3, -7, -92006-01-23current
Turbo Technologies LLCPlug-oil seal 3/8 dia x 5/16 long (& oversize) T1832618326Rolls-Royce 501-D13, -D22, -D22A2001-11-06current
Sun Air PartsPlug-Oil Pressure Relief SAP13404Pratt & Whitney 13404Pratt & Whitney R-985 Wasp Jr. series AN-1, -3, -41997-07-10current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.