Cable ties made of black or natural polyamide.-40÷100°C. working temperature. V2 self-extinguishable according to UL 94. The hooking occurs when the heads elastic tooth buks on the rack; once the tail is inserted into its head, a loop develops which can be only tightened. They are useful to fasten and to seal. The working load shall be chosen using a security coefficient higher than 2. A preloading lower than 10% of the working load shall be applied.