It's great stuff! I installed in five years ago in my stuffing box,
and after the initial tightening, have only had to adjust it a couple
of times, each maybe 1/16 of a turn or so. Info. at:
http://www.gore.com/en_xx/products/s...ing_fiber.html
Buy it at: http://www.e-marine-inc.com/products...g/packing.html