The U.S. aircraft register, updated daily
Parts

Seal Seal

No failure report names the seal seal. 4 FAA approvals let 2 companies make a replacement seal seal, Knots 2U LTD holding the most (3).

Approved replacement parts 4 parts manufacturer approvals

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

For these models most: Cessna 175 Skylark (2), Cessna 172 Skyhawk (2), Cessna R172 Hawk XP (1), Cessna P172 (1), Cessna A152 (1), Cessna 182 Skylane (1), Cessna 180 Skywagon (1), Cessna 177 Cardinal (1), Cessna 170 (1), Cessna 152 (1), Cessna 150 (1), Cessna 140 (1).

MakerPartReplacesFitsGrantedStatus
Knots 2U LTDSeal (Storm Window) Seal (Storm Window) ADS1200-19 ADS1200-19Aircraft Door Seals, LLC P/N ADS1200-19...Hawker Beechcraft... 35-33, 35-A33, 35-B332017-07-09current
Knots 2U LTDSeal (Front Entry Door) Seal (Front Entry Door) ADS1200-401 ADS1200-401Aircraft Door Seals, LLC P/N ADS1200-401...Cessna Aircraft... 175, 172A, 175A2017-07-09current
Knots 2U LTDSeal (Front Entry Door) Seal (Front Entry Door) 500-600 500-600Aircraft Door Seals, LLC P/N 500-600 Aircraft...Cessna Aircraft... 120, 140, 140A2017-07-09current
Jet Parts Engineering, INC. (Jpe)Seal Assembly Seal Assembly 690200JP-4690200-4ATR ATR42-200, -300, -3202011-11-15current

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.