Don't use a 45 deg flare tool to flare AN lines
Use the right tool that can flare aluminum and annealed stainless.
The A-N specification calls for a 37 degree JIC flare in order to seal hard line tubing on the flare of the matching adapter.
This tool should not be confused with those sold in mail order discount tool catalogs.
This unit is American made and is the choice of professional race teams for accurate, leak-free flares.
This economical flaring tool works on 3/16" through 5/8" diameter tubing.
The faceted, hard chrome-finished cone rolls out a perfect flare and burnishes the surface at the same time.
The large handle gives excellent leverage.