Re: use teflon tape on a gas fuel line?

Posted by Dave D on November 19, 2004 at 11:18:45 from (66.155.201.82):

In Reply to: Re: use teflon tape on a gas fuel line? posted by K.B.-826 on November 18, 2004 at 19:53:50:

Hi K.B., not trying to beat this dead horse, but actually this is not a normal metal flared fuel line. On this old tractor it is a rubber fuel line hose (maybe 5/8") exiting the strainer bowl and terminating in a brass "barbed" fitting with male threads that screw into a brass receiver on this carb. Once the brass fitting is screwed into the carb receiver, which is a brass 90 degree elbow, the hose slides over the brass barbs and then it gets hose-clamped.

I put the teflon tape around the threads that screw into the brass receiver on the carb as I thought it would make a better joint. I did not obstruct the hole in the end of the fitting but it all dissolved anyway. When I unscrewed it about 2 weeks later the teflon was in transparent shreds, what was left of it.

Whether lubricant or sealant I had always thought teflon was inert and resistant to everything in the known world. I have a jar of teflon trailer ball hitch and I use it on all kinds of things besides teflon joint tape. Maybe I should have gone that route for this joint. But like I initially said, probably brass on brass is such a good joint that I was wasting my time wrapping it anyway!

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