This is a cut-a-way view of the PSS Shaft Seal. It is critically important that TWO set screws be used on on top of the other to lock them into place. The o-rings should seat in the slots well and no grease or oil should be used when sliding the rotor onto the shaft.
The factory set screws come from the factory with thread locker already applied. It is the off white/yellowish stiff on the set screw threads.