Merry Christmas! That's a nice looking motor. Not sure if I understand our question about brakes, but I put Permatex thread sealant on the fitting threads that screw into the brake calipers. No sealant required on the other end, the -3 AN threads that connects to the stainless flex lines. The fitting that connects the stainless flex lines to the hard brake lines that you bend yourself, that fitting is connected to your chassis with the supplied brackets.
-Steve