Flame retardant heat shrinkable tubes are made of radiation crosslinked polyolefin materials with excellent physical, chemical and electrical properties. Their main functions are electrical insulation of connectors, anti rust and anti-corrosion of solder joints, mechanical protection and wiring harness. They are widely used in electronics, communication, automobile, ship, aircraft manufacturing and other fields Product features Heat shrinkable ratio: 2:1 High flame retardant and environmental protection shrinkage temperature 84 Â Final shrinkage temperature: 120 Service temperature: - 55 125 Standard colors: black, white, red, green, blue and other ten international standard colors