strength of 618 and 645 nylon when wet?

[lance-greene 7]

has anyone been printing much with these nylons from taulman? just wondering how they hold up once they get wet, ive printed with bridge and when it gets wet they get super flexible and weak.

 

[yellowshark 153]

My only wet experience is with the 645 nylon which I used to make some shock absorber seals for a friend's 1951 MG. after a year they have remained watertight, or I suppose to be correct oil-tight, and are doing the job. Whether or not they have got any softer/weaker would be impossible to tell without taking the suspension apart. I can only assume that if they were getting weaker and started to disintegrate then they would start to leak.