heat shrink tube is polyolefin cross-linked heat shrinkable tubing, this product is designed according the special requirements of auto, so it has good oil retardant and insulation capacity. Meanwhile, it is low smoking , halogen free and meet RoHS compliant. This material is very flexible and has excellent mechanical strength, so it is suitable for a wide range of applications, including auto oil pipe, electronics insulation, wire protection, and other fields needed protection in atrocious environments. This product is meet SAE-AMS-DTL230534, so it also be applied in aero and war industry.