KT Black Nylon Cable Ties use UL approved nylon and are UV treated and weather resistant with a temperature rating of -40°C to +85°C. UV Treatment only applies to black cable ties. Approved to the requirements of MILITARY 3367 – 1978 and UL Underwriters Laboratories E156597. All black cable ties supplied by KT are UL approved nylon 6/6 with flammability rating of UL94V-2. KT Cable Ties are both long lasting and durable with a standing reputation of quality within the industry.