The Dialight 123-1231-403 red dome neon lens cap is a critical component for applications requiring a sealed and protected light source. Constructed from durable polycarbonate, this cap provides excellent impact resistance and clarity. The satin chrome finish enhances its aesthetic appeal and provides corrosion resistance. It's designed for use within the 123 Series and is suitable for a wide range of industrial and commercial lighting systems where a watertight seal is essential. The 11/16 mounting hole size ensures compatibility with standard configurations.