Window sealent

[P.o.P.]

Amen to Johnw's feeling about silicone. Detroit loves it because they can squirt it on in place of proper gaskets. It has no place in an airplane.

Not quite true.

Some engines & Constant Speed Props are sealed with the PROPER type.

My FIRST experience with GE RTV (Room Temperature Vulcanizing) was sealing the Afterburner of an F-100C.

[Throttle Pusher]

I agree with JohnW
silicone has no place on a GA airplane. We did use it on the jets at Boeing, but the application are different.
When you use silicone it absorbs into paint and metal,and other proper sealants wont stick after you use silicone.
In some applications you might as well throw out the parts you used it on, and start over. At Boeing you never use the tools you used on silicone on any other sealant because of contamination.You cant uncontaminated a tool thats been in contact with silicone.

Ken

[Tri-Pod]

Good day all,
Cleaning up the parts, getting ready to install my new windshield.
The old black sealant was pretty much all over, probably been done a few times and never really cleaned up.
Hard to tell exactly where it is actually supposed to be applied.
Attaching a little sketch, looks like the caulk should go in 2 places ... between the INNER PIECE and the cowl, and between the INNER and OUTER PIECES (both sides of the bolts). Depicted as RED in the pic. (hey, I'm a pilot .... NOT an artist )
I have the black ribbon caulk mentioned earlier in this forum.

Thanks for guidance and verification.
Regards,
TPScreenHunter_01 Nov. 16 18.26.jpg

[Steve Pierce]

I lay a strip in between the two trim pieces and then use an awl to make a hole in the sealant for the screws. It squishes out and seals.

[Tri-Pod]

........ between the two trim pieces It squishes out and seals.

So it is not necessary to put any against the cowl (under the inner trim piece) I was not sure if there would be enough to squish out and seal along the front edge.

Thanks Steve,
TP

[Steve Pierce]

I normally have to scrape the excess off the windshield and the trim piece from it squishing out.

[Tri-Pod]

PERFECT !

Thanks again Steve

[NRW-Aviator]

Steve, how do you seal between window and outer trim?

[Steve Pierce]

I use Bostix 1100 Urethane sealant. Here is a discussion on the subject. http://www.shortwingpipers.org/forum...hlight=sealant

[Steve Pierce]

I use this 3M Rope Caulk on the frame at the boot cowl and up the sides of the fuselage installing the retaining screws through the caulk. I get it at the local auto parts store.

http://3mcollision.com/3m-strip-calk-08578-black.html