The ornamental design for rotary flaring tool, as shown and described.
FIG. 1 is a front view of my rotary flaring tool showing my new design, the back view thereof being a mirror image;
FIG. 2 is right side view thereof, the left side view being a mirror image;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a front view of the rotary flaring tool of FIG. 1 shown with a nut removed from the shank end thereof, the back view thereof being a mirror image;
FIG. 6 is a right side view thereof, the left side view thereof being a mirror image;