When doing this in a boat it is a very good idea to mark the exterior of the nut where each seam is so you can stagger them. Use a packing tool like I show below to compress them into the nut. Only when all rings are in the nut can you then tighten it.


Tightening the nut to seat the packing, especially with the newer more slippery packing braids, can move the seam and you'll now be blind as to where your seams are. Best to make yourself a seating tool.