General purpose nylon 6/6 is suitable for use in most practical applications at a continuous temperature up to 150°F.  Nylon 6/6, the grade most often used for cable tie production, meets UL 94V-2 flammability ratings. Its working temperature range is from 40°F to 185 °F. Smooth, rounded edges do not cut insulation - or hands - and are comfortable to work with.