Firewall Sealing Around Gascolator Fitting

[musket]

How have y'all sealed the firewall around the fitting that passes fuel from the fuel selector valve to the gascolator? My first thought was to use a grommet, then cover the grommet with fire sealing caulk, then cover all of THAT with one of those two-piece shields that screw to the firewall. Is that a bit excessive, or is there a better way?

'Preciate your advice and knowledge -- thanks in advance.

Andy

 

[mike mcs repair]

Gromet yes
Caulk yes

Quit there

 

[Fortysix12]

if you can get your hands on some chromate puddy..., more rare these days.

 

[tempdoug]

In the pa18 parts manual theres a washer 80122-67. Item number 64 in the fuel system installation diagram. Figure 35 page 120 in my parts manual. Whats its purpose???

 

[Darrel Starr]

I looked up the photo of this fitting in our SC. I don't remember using any caulk and it appears the reason is because the grommet fits tightly around the fitting. I don't see how caulk would help in this case.

 

[Steve Pierce]

Piper put some sort of caulk on the firewall side over a phenolic type washer if memory serves me correctly.

 

[musket]

Thanks, guys. Looks like the grommet and caulk (or a fire resistant putty of some sort) is the preferred method.

Hey Darrel -- no more pictures of your airplane from you, OK? Your craftsmanship sets the bar toooo high for us common, mortal builders !!!!

Mike: You've just cost me some big $$$ -- 4' x 8' sheets of .060 Kydex are d*mned expensive . . . . . .

 

[Darrel Starr]

:lol:----------:lol:

 

[mike mcs repair]

Thanks, guys. Looks like the grommet and caulk (or a fire resistant putty of some sort) is the preferred method.

Hey Darrel -- no more pictures of your airplane from you, OK? Your craftsmanship sets the bar toooo high for us common, mortal builders !!!!

Mike: You've just cost me some big $$$ -- 4' x 8' sheets of .060 Kydex are d*mned expensive . . . . . .

$$$ ;-) you'll love it