Visico™ LE4423 / Ambicat™ LE4432 is a silane crosslinkable black compound system designed for insulation of low voltage energy cables and covering/insulation of overhead cables. Visico LE4423 is a low density polyethylene, copolymerised with vinyl silane. LE4432 is a crosslinking catalyst masterbatch specially designed to be used with Visico base resins. The system crosslinks quickly in sauna or in hot water. Cable insulation with a proper mixture of Visico LE4423 (90 parts) and LE4432 (10 parts) exhibits excellent thermooxidative stability. The combination is suitable for both copper and aluminum conductors. The final product contains nominal 2,5% of fine size carbon black ensuring excellent weatherability.