Jet Fuels 1

[slickstyles5]

Hi,
I would like to know if Reinforced PTFE is compatible with JP-8 and JP-10 jet fuel as well as Diesel Fuel? I am trying to find a fire safe ball valve in a 1" pipe size and the seats only seem to be in R-PTFE which does not seem to be compatible with JP-8. Any suggestions?
Thanks
Gabriel

 

[ione]

Viton and fluorosilicone could be a couple of options.

You can check chemical compatibility with jet fuels at the link below as preliminary approach and then go deeper with your supplier.

http://www.hitechseals.com/chemical-compatibility.asp?searchtype=reverse

 

[slickstyles5]

I do agree with ione, and from experience, you can't go wrong with Viton. The only situation that I had a problem with Viton was when I had low temperatures. Other than that, it's compatible with almost everything!!

 

[btrueblood]

What is the reinforcement, glass fiber? Don't know why JP-8 would attack that, nor any other hydrocarbon fuel.

 

[ione]

galeblanc,

Take a glance at page 160 (C-2)

http://www.gulfcoastseal.com/downloads/eps5340.pdf

It appears PTFE has a good compatibility with jet fuels, so btrueblood seemed to be on the right track.

 

[slickstyles5]

Thank ione, this chart shows that JP-8 & JP-10 is ok with PTFE. This is perfect.

Now I need to find which metals are OK with JP-8/JP-10. Stainless is OK for sure but my main concern is Bronze.

 

[blacksmith37]

The engine manufacturers likely have listings of approved materials for contact with the fuel.