Seal Disk
No failure report names the seal disk. 7 FAA approvals let 3 companies make a replacement seal disk, Wencor 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 seal disk and sell it as an approved part for the models named. These are the companies holding such approvals for a seal disk:
For these models most: Boeing 737 (1), Airbus A340 (1), Airbus A330 (1), Airbus A300 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Wencor LLC | Seal Disk 326847WE | 326847 | The Boeing Company 737-800 Series | 2026-04-06 | current |
| Central Texas Aircraft Parts (Ctap) | Seal Disk HP867681-5 | 867681-5 | Allied Signal TPE331-1-100F, 1-101B, 1-101E | 2023-10-03 | current |
| Central Texas Aircraft Parts (Ctap) | Seal Disk HP867681-5 | 867681-5 | Allied Signal TPE331-1-100F, 1-101B, 1-101E | 2023-10-03 | current |
| Central Texas Aircraft Parts (Ctap) | Seal Disk HP867681-5 | 867681-5 | Honeywell International Inc. TPE331-1-100F, 1-101B, 1-101E | 2022-12-22 | current |
| Wencor LLC | Seal-Disk 867681-1WE | 867681-1 | Airbus A300-600 A300, Model B4-601 A300,... | 2010-09-29 | current |
| Wencor LLC | Seal-Disk 867681-5WE | 867681-5 | Airbus A330-200 series, A330-201, A330-202 | 2010-08-30 | current |
| Corporate Aircraft Components INC (Formerly Higher Planes) | Seal Disk TH867681-5 | Garrett 867681-5 | Honeywell TPE331 Series | 1998-06-08 | 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.