The AN side of the flare is sealed by a 37 degree angle and the NPT side is sealed by a 60 degree tapered thread.
EVIL ENERGY 6AN Male to 1/4 Barb Push on Fitting
EVIL ENERGY NPT Male Hex Head Plug Aluminum – EVILENERGY
EVIL ENERGY AN Female Flare Cap Block Off Fitting Aluminum
EVIL ENERGY 6AN Male Flare to M16x1.5 O Ring Seal
EVIL ENERGY 6AN Female to 1/4 NPT Male Swivel Fitting Aluminum
EVIL ENERGY 6AN Male Flare to -6 Female Swivel with 1
EVIL ENERGY 6AN Male Flare to M18x1.5 O Ring Seal
Size: The thread size of 6AN is 9/16-18 UNF and that of metric side is M10 x 1.0mm. Sealing: The AN side of the flare is sealed by a 37 degree angle
EVIL ENERGY 6AN Male Flare to M10 x 1.0mm Male Metric Fitting Adapter Aluminium Alloy 2PCS
EVIL ENERGY AN Male to Male Flare Coupler Union Straight Hose