Originally Posted by TimeMachinE30
@jeffnhiscars, nylon will certainly absorb water. It may not wick and absorb like cotton... but it does. It is not a personal belief but understood universally. Science is there to support this. Examine seat belts at the JY... those which have been exposed to the enviroment. Now a cleaning here and there may be just fine...thing is our belts are already some 30 years old.
I'm pretty sure he meant nylon as a material, not nylon webbing. Nylon webbing will hold water, but it is held between the threads of nylon, not in the nylon itself.
Cleaning belts probably helps them retract because the dirt and gunk in them makes them stiffer and not bend(wrap) as easily.