Transmission suspension/deadend insulators are installed on support structures to hold conductors longitudinally (dead-end) or vertically (suspension). The connections to the structure attachment point and line vary depending on the line design or Utilities preference.

The core rod of the transmission suspension/deadend insulator is made of a high quality epoxy resin fiberglass that has been specially formulated for electrical and mechanical applications. Other rods (e.g. ECR) are available upon request.

The housing and sheds of the insulator are one piece, injected-molded silicone polymer that chemically bonds to the core rod. This ensures that the interface between the rubber and rod is impenetrable against moisture ingress. The silicone polymer formulation in K-Line Insulators is proprietary. The formulation has silicone rubber as the base polymer material with additives to enhance its performance in wet and contaminated environments.