The XFFR-04X4 is a black flame-retardant Heat Shrink Tubing made of semi-rigid irradiated modified polyolefin and offers 3:1 shrink ratio, halogen-free tubing and it can be used for re-jacketing and repairing halogen-free cables in any enclosed area where a flame-retardant, halogen-free environment is required. These environments include tunnels, buildings, mass transit vehicles and ships. When installed with S-1305 tape, the tubing can also be used in applications requiring water sealing and protection from abrasion and corrosion.