160Kn Extra High Leak, Y 20mm Ball w/ringThe Quadri*Sil® transmission suspension insulator embodies the latest in polymer insulator design that combines a patented revolutionary four-point sealing system together with electrical grade corrosion resistant direct draw fiberglass rod and proprietary silicone polymer to provide the highest quality, lab tested, and field proven insulator on the market with an extra high leakage shed profile design for improved contamination performance.Made from hydrophobic silicone polymer