Sealing Gas Shutoff Base & Crossover Line

[wideglide38]

I'm trying to fix a small leak at the base of the gas shutoff rod where the cross-over ties in on my 48 pan. I've cleaned everything thoroughly, installed new brass washers, etc. I was wondering if anyone has coated the brass washers (both sides) with a TFE (chemical & gas resistant) paste with any success. The shutoff rod is aligned - no leaks when shut. Any suggestions?
Thanks,
William #10035

[T. Cotten]

William!

The copper crushwashers used for the carburetor bowlstem are far more forgiving than the brass washers.

Try 'em you'll like them,

...Cotten

[wideglide38]

Cotten,
That's a very good idea, thanks! I just reassembled the rod seat and crossover . . if she leaks again she'll get the crushwasher treatment!
Ride safe,
William

[Chris Haynes]

Could it be the joint on the fuel crossover line that is leaking?

[wideglide38]

Chris, I checked the joint during re-assembly. The joint looks solid & tight. Plus it didn't leak over night! Thanks

[exeric]

I wrap the brass washers with teflon tape. In and out until I have a good build-up of teflon tape. I have been doing this for many years on every early big twin with cross-over lines and never. . . Repeat, never had a leak.

[wideglide38]

Eric, Thanks for another great solution! Should have scratched my brain longer . . . and I do have some gas resistant teflon tape (yellow)! Ride safe, William #10035

[Carl Olsen]

I make them out of PEEK, they never leak and are reusable, same with the carb bowl seal and the seat for the needle valve on the carb bowl. You have to be crative with all of that core material when you are paying lots of money for the solid tube just to make manifold seals. I even used it for a worn out axle sleeve on the garden tractor.
Carl

[cdndewey]

I make them out of PEEK, they never leak and are reusable, same with the carb bowl seal and the seat for the needle valve on the carb bowl. You have to be crative with all of that core material when you are paying lots of money for the solid tube just to make manifold seals. I even used it for a worn out axle sleeve on the garden tractor.
Carl

What the heck is PEEK?

[rwrun]

polyaryletheretherketone

or a thermoplastic material typically found in sheet or rod stock

[Barry]

Now that we know the chemical makeup, would someone please explain what it is and how to use it. And where do you get it. Barry

[rwrun]

PEEK is a plastic material which can be machined to whatever specifications you would like. I have gotten it from Curbell Plastics in the past for applications other that motorcycle parts.
Link Below

http://www.curbellplastics.com/engineering-plastics/peek.html