The U.S. aircraft register, updated daily
Parts

Seal Engine

No failure report names the seal engine. 2 FAA approvals let 2 companies make a replacement seal engine, Texas Aero Support holding the most (1).

Approved replacement parts 2 parts manufacturer approvals

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

For these models most: Mcdonnell Douglas DC-9 (1), Mcdonnell Douglas Aircraft Co MD-88 (1), Boeing 767 (1), Boeing 747 (1).

MakerPartReplacesFitsGrantedStatus
Kirkhill-Ta COSEAL-ENGINE BREATHER DUCT S-15936-260B90142-2Boeing 747-400 SERIES,...2015-08-28current
Texas Aero SupportSeal-Engine, Oil Breather 2071009T-1Douglas 3959076-501McDonnell Douglas DC-9-11, -12, -131993-07-27current

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.