Our thin wall heat shrink is chemically cross linked which makes it split resistant. It is rated from -25 to 135DegC and conforms to Military Specifications and is UL approved. This tubing is also flame retardant to VW -1 and is self extinguishing. Our standard colours are B black, BL blue, R red, W white. We also offer special colours, G green, Y yellow, C clear, G/Y green yellow. Please note special colours may not be available in all sizes.