Propeller Governor Gasket.
Replaces: B-1104, B-20024, 209217, 57354, MS100009, 531083, AA9144, AMS7283
Application: Piston engine prop governors
When I replaced my governor I used this gasket it started leaking from the first start. So I took the governor off and replaced it with another gasket same part number, it also leaked. So I took it all back down and used a LW gasket,$1.24 part and the leaking stopped.. Looking at the flange with the rubberized gasket in place it looks smaller around the edges. It also appears that the screen sandwiched and then rubberized is not exactly smooth creating a leak. This looks as like it was a bad batch of gaskets.