DuPont Chain-Saver with Teflon Fluoropolymer is a patented self-cleaning, dry-wax lubricant that is safe on rubbers and plastics. Wax film works to repel dirt, dust, paper, grass and other contaminates. Helps chains last up to 5 times longer. Formulated with Teflon for longer lubricant life, enhanced wear protection, better high and low temperature..