The Guardian Fall Protection Polydac Rope Vertical Lifeline Assembly is one of the strongest conventional rope assemblies available today. It is 100% resistant to rot and mildew, even if stored when wet, and has excellent resistance to alkalis and most solvents. It also provides good protection against abrasion, and has a melting point of over 300 degrees. Polydac Rope has a working load elongation of 8%, and absorbs more energy than any other type of rope available on the market12 times as much as Manila and 50% more than polyester.