Bushing Seal for Sealed Switch Panel Mounting Hole

3/8" diameter bushing seal for designed for a sealed switch panel mounting hole. This is a new product to protect against and prevent seepage/leakage through switch panel cutout  While sealed switches are designed to tolerate hostile environments, they typically do not seal the panel cutout in which they are mounted. This product is designed to prevent leakage of contaminants past the bushing through the panel cutout, protecting equipment and avoiding system failures.