Anyone try this product? www.armorcord.com . It is pretty pricey for a pull cord, ubt I just had one let go on me and decided why not. Seems pretty robust. If I had to guess it would be a combination of Dacron or Terylene. Seems pretty robust, a little slick, extremely high melting point and denser then water.... It does not hold a knot as well as nylon but well enough.
Lifetime warranty..
Lifetime warranty..