UHMWPE is used as a new type of non-metallic materials, a molecular weight of 1 million or more polyethylene. Ultrahigh molecular weight polyethylene liner impact resistance: Impact ranks first in plastic. The impact strength of nylon 66 to 10 times, high molecular weight polyethylene plastic, 20 times of PVC, ultra-high molecular weight polyethylene wear, PTFE 8 times; especially at low temperatures, but its impact strength the highest value, ultra-high molecular weight polyethylene, its flexibility performance delivery system to provide a very safe and reliable protection. The nature of ultra high molecular weight polyethylene liner products: self-lubricating. UHMWPE liner has a very low coefficient of friction (0.05 to 0.11), self-lubricating resistance. In the absence of lubricant condition after self-lubricating best polytetrafluoroethylene (PTFE); when it works in the form of sliding or rotating, adding than steel and brass lubricating oil lubrication even better.