Sealing -AN plumbing???

Hi Y'all,
I'm doing a fuel injection conversion on my Falcon and I'm using -6AN hose for the plumbing. I'm wondering what kind of thread sealant I should use on these connections. Any advice?
 
none!

they seal on the flange face, don't use any sealant but make sure the seats are clean with no scratches or nothin.
 
Really? Metal to metal? I can see that 37* flange looks mighty special, but really? I'm not talking about the hoses but the screw-together junctions: hose to fuel rail, hose to pump, hose to pressure gauge, etc.
 
AN fittings are routinely used in 3000psi aircraft hydraulic systems. No thread sealant used. You'll b fine with a 45psi auto system.:)
 
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