Originally Posted by Soro

Brushless motors are incredible pieces of engineering, its amazing how little we have to maintain these things compared to brushed motors. To help extend the life of my new Flux Tork motor as well as reduce maintenance intervals, I'm gonna seal up the front endbells openings with some set screws. I asked Patrick del Castillo, president and principle Engineer of Castle Creations at the RCM forums about doing this last year. He stated that there should be no issues with sealing the endbell of the 2200kv motor up.
I would ask them again