AN fittings are commanly used on race cars/hot rods. The A/N stands for Aircraft/Navy. They do not need a sealer. If not mistaken they use a 37 degree JIC taper seal. Make sure theres no burrs on the threads or the mating surfaces and all is good.
For additional info- The size divided by 2 is how many 1/8's of an inch it is. Lets say you have a #8 line and fitting, its a 1/2" size while a #6 is a 3/8".
Don't use anything you don't want in your fuel system eventually. I use AN fittings for aircraft heat exchanger designs and all we use is a light primer mask to separate dissimilar metals. No sealer required if threads are clean and to spec.
For additional info- The size divided by 2 is how many 1/8's of an inch it is. Lets say you have a #8 line and fitting, its a 1/2" size while a #6 is a 3/8".
Why not indicate that the AN # is 1/16th of an inch? Dibisun are hard.
