After putting together the torque tube on my 38, I began to ponder how the seal is accomplished at the rear of the sleeve where the collar is. As it is tightened, the seal is compressed in width and the smaller diameter decreases to seal around the driveshaft tube. Now at the same tome the outer portion of the seal expands against the threaded collar. This would seal the collar but not the threads so where is the complete seal attained?
