This coupler from Duraline is expertly designed for use in challenging environments, making it a perfect solution for pull boxes, vaults, and other areas with limited access. Constructed from high-strength, corrosion-resistant plastic, it offers durability and reliability for both indoor and outdoor applications. Its innovative transparent body design facilitates instant visual confirmation that the duct is fully seated, while the airtight and watertight seal provided by the factory pre-lubricated O-rings ensures effective performance during cable pulling and jetting activities. Moreover, the user-friendly push-on, one-person assembly allows for quick installation, and the self-locking ring enhances ease of re-entry. This coupler is an ideal choice for efficient and secure connections in any piping setup, with a maximum pressure rating of 250 psi and a pull-out strength of 650 lbs.