CORE – is fiberglass reinforced epoxy resin rod that produced from the highest quality materials. It is the component to bear mechanical load and has minimum tension strength at 1000Mpa.

END FITTINGS – are made of steel with hot-dip galvanized. They are compressed directly to the rod by a special process.

SHEATH & WEATHERSHEDS – are produced with High Temperature Vulcanized silicone rubber compound that exhibit high, long-term hydrophobicity, high aging resistance, high corona resistance and low permeability to moisture.

INTERFACES – between the fiberglass rod, rubber sheath, and rubber sheds are laid on a special adhesive that compound on the basis of silicone rubber and then vulcanized. This firmly bonds the rubber to the rod and bonds the rubber sheds to the rubber sheath so that the joint between sheds and sheath is stronger than the rubber.

For suspension insulator with SML on or above 120kN, the interface between the metal fittings and the sheath is fitted on an additional o-ring seal beside of the special sealant.

CORONA RINGS – is made of aluminum. The corona ring is necessary at 220kV system and above. For application at 220kV and 230kV, one corona ring should be assembled at the line end of the suspension insulator; For application at 345kV and greater, two corona rings should be assembled at both end of insulators. There are three types of corona rings for options: R250, R305, R380.