The HUBBELL 20509002 metal clad sealing O-ring is a critical accessory for cord connectors, ensuring a robust and watertight connection. Designed for use with a 3/4" HUB size, this O-ring provides enhanced sealing performance in demanding industrial environments. Its metal clad construction offers added durability and protection against environmental factors. This accessory is ideal for applications requiring a reliable and long-lasting cord connector seal.