Xlpe Compound A silane grafted crosslinkable polyethylene compound, curable by exposure to moisture, for insulation of power cables and possessing excellent extrudability at high output rate. PP 408 is based on high molecular weight polymer and has melt flow index in the range of 1.0 to 1.4. It has been especially developed for low Voltage Cable Insulation and for Sheathing Purpose. Silane grafted cross linkable polyethylene for low voltage power cable insulation.