Seal Cap
No failure report names the seal cap. 4 FAA approvals let 3 companies make a replacement seal cap, Wencor, LLC holding the most (2).
Approved replacement parts 4 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a seal cap and sell it as an approved part for the models named. These are the companies holding such approvals for a seal cap:
For these models most: Mcdonnell Douglas MD-11 (1), Mcdonnell Douglas MD-10 (1), Embraer ERJ 170 E170 and E175 (1), Boeing 747 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Wencor, LLC | Seal Cap 4305910270WE | 4305910270 | The Boeing Company DC-10-10, DC-10-30F (KC-10A, KDC-10) | 2025-10-30 | current |
| Wencor, LLC | Seal Cap 4305910270WE | 4305910270 | The BoeingCompany MD-11, MD-11F, MD-10-10F | 2025-10-30 | current |
| Ametek Ameron LLC D/B/A Mass Systems | Seal Cap Harness Valve M630039 | 630039 | Embraer S.A. ERJ 170-200 STD, ERJ 170-200 LR, ERJ... | 2025-04-10 | current |
| Kalitta Maintenance | Seal Cap 4305910080KM | Boeing 4305910080 | Boeing 747-300 Series, 747-400D Series,... | 2019-03-03 | current |
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.