Profile: Ultra Polymers is a manufacturer of PVC wiring channels, copper & aluminum bus bars, PVC heat shrinkable bus bar sleeves, PVC trunking, and conduit pipes. Our bus bars are protected by PVC heat shrinkable sleeves to limit chemical corrosion. They are connected to each other and to electrical apparatus by bolted or clamp connections. Joints between high-current bus sections of our bus bars have matching surfaces that are silver-plated to reduce contact resistance. These products are available in various sizes and shapes.