The International Cessna^® 170 Association

The "square" section is what slips over the lip of the door, while the open "P" section is what fills the gap between the window-frame and the door. It's an absolutely PERFECT weatherseal for the openable door windows, and exactly the correct size as well.

3958v wrote:I'm probably gona catch some flack for this one. The aircraft parts section of Home Depot has some nice 1/4 X 1/2 soft foam strip with an adhesive back that does a great job. It does not cause much stress when you close the window and it stays in place if you open the window and it is cheap. Bill K

That's what my mechanic/IA installed when He did the annual a couple of years ago. My 170 had that same thing when it was built in 1950, not the formed/extruded rubber seal.

Your 170, when it was built in 1950, did not have a foam strip with adhesive backing from Home Depot.

It had a 1/4" folded rubber gasket which was pasted onto the door with MEK-cement. (I have a never-installed, NOS door/window in my hangar complete with the original deteriorated rubber gasket to prove it.)

The last time this was discussed I took Georges suggestion and went to Brown and company and got the "P" shaped seals. I had the flat sticky back foam on the windows and over time it started to seporate and then the wind got at it while taxing. I found the "P" shaped seals to be easy to put on and they mated better between the window and the door frame. Very happy with the George/Brown solution.

Anybody tried the Avtek window seal sold by Spruce?

http://www.aircraftspruce.com/catalog/a ... orseal.php

Updated link to the Brown Aircraft window seal http://www.brownaircraft.com/ProductDet ... =BA-1055-1 .