What is my seal called?

Oh great! I was hoping something would be easy for a change.


dont quote me on that but i think that is how it goes. I think you just need to take the nut off with a torque wrench and take the setting up a few lbs at at time till it lets go. then put it back on to that exact torque setting. like i said i could be wrong but i think that is what i read, somewhere, one time at a place i forget.