What is a Polymer Insulator?Polymer Insulator DefinitionThe Polymer Insulator consists of two parts, one is a glass fiber reinforced epoxy resin rod-like core, and the other is a windproof canopy made of silicone rubber.Polymer Insulator Advantages Very lightweight As the composite insulator is flexible the chance of breakage becomes minimum. Lighter in weigh Smaller in size Performance is betterPolymer Insulator Disadvantages Moisture may enter in the core if there is any unwanted gap between c