Are you planning on getting something other than Lyc part???
Regular automotive etc. seals will probably not work, as the seal has to stretch over the prop flange.
Any Navy guys remember that joke? "go feed the shaft seal"???
Any Navy guys remember that joke? "go feed the shaft seal"???
Yup! Those and the Naughas.
Not everyone flies behind a Lycoming guys - I think this is a unique engine installaiton if I rememebr corectly. Unfortunately, I don't know the measurements he needs, but maybe someone else can actually give him the dimensions he seeks.
I think the info is here on page one. Larry
http://blog.bowenaero.com/wp-content/uploads/2009/04/lycoming-service-instruction-1324.pdf
I'm not Navy but my son is.
I assume the above is where the hides are grown?
My son did comment on the common search for CPO nuts in the maintenance hangar.