Silike silicone masterbatch LYSI-404 is a pelletized formulation with 50% ultra-high molecular weight siloxane polymer dispersed in High-density polyethylene,w When added to the inner layer of HDPE Telecom pipe, it reduces the coefficient of friction thus facilitating the blow of optic fiber cables to a longer distance. Its inner wall silicon core layer is extruded into the inside of the pipe wall by synchronization, distributed uniformly in the whole inner wall, the silicone core layer has the same physical and mechanical performance as the HDPE: no peel, no separation, but with permanent lubrication. It is suitable for pipeline systems of PLB HDPE telecom duct, silicon core ducts, outdoor telecommunication optical fiber, optical fiber cable, Large diameter pipe, etc...