The DUCT SEAL 22mm from GMP Tools is an essential component for ensuring secure and efficient cable placement and protection. This versatile accessory, designed specifically for cable blower systems, facilitates the sealing of ducts to prevent debris infiltration and safeguard cables during installation. With a single unit included per package, it is a reliable addition to your toolkit to maintain functionality and integrity in your cable management system. For those needing additional replacement components, a pack of O Ring Seals is also available, ensuring you are well-equipped for any project.