Ultra Extreme Temperature Cable Ties are designed to perform in harsh environmental applications. Engineered using a special Nylon 6/6 material, they are able to maintain their properties down to -40°F. These cable ties will stay securely bundled no matter what Mother Nature may bring their way. These cable ties have a good resistance to oils, greases, oil derivatives, and chloride solvents. Limited resistance to acids. No resistance to phenols.