Form: This specification covers a synthetic rubber-coated@ high-tenacity@ continuous-filament polyester in the form of flat braid. Application: Primarily for tying and lacing electrical wire harness assemblies for use at -75??o +175??(-100??o +350?? where fungus resistance is required in a spacecraft environment. Classification: This specification covers four classes@ by size@ as follows: Size 15 -- 15 lb ( 65 N) minimum breaking strength Size 25 -- 25 lb (110 N) minimum breaking strength Size 50 -- 50 lb (220 N) minimum breaking strength Size 80 -- 80 lb (355 N) minimum breaking strength