E-FLEX® FR PET High Flame Retardant Expandable Sleeving is made of sturdy polyester monofilament,it is light weight,highly flexible,good abrasion resistance,selfextinguishing. Easier application over irregular shapes,FR is the perfect choice for electronic and high tech applications where flame retardance and durabilityl are primary concerns.It recommended in applications such as public transport, aircraft industry,automotive,telecommunications,underground cables etc.