MPS offers a full line of silicone coated guy strain insulators in ratings of 15,000, 21,000, 30,000, 36,000 (Guy Strain Insulator PIB) 50,000, and 80,000 lb designs. The silicone coating offers improved UV protection and contamination performance characteristics. MPS's extruded HTV (high temperature vulcanized) silicone rubber formulation has been lab-tested and field-proven since 1984, is completely bonded to the fiberglass rod during production, won't tear away or fall off over time, eliminates potential voids to prevent moisture ingress, and provides the same insulating protection and hydrophobicity performance as MPS's high voltage transmission insulators.