Engineered for versatility and strength, the Shur-Lock II Coupler by Duraline is designed to thrive in both outdoor and underground applications, thanks to its UV-resistant and durable materials. This coupler features a no center stop design, allowing it to slide fully over the ends of conduit, making it an excellent choice for repairs and installations where space is limited. Installation is simplified with stainless steel band clamps that can be quickly secured using a standard 5/16" nut driver—no specialized tools required. The coupler ensures a reliable air- and water-tight seal with its pre-lubricated O-ring, capable of withstanding pressure up to 125 PSI. Its compatibility with various materials—including HDPE, PVC, metal, and fiberglass—provides flexibility in applications, while its high pull-out strength guarantees mechanical reliability under heavy loads and vibrations. With ETL listing to CSA and UL standards, this coupler meets rigorous safety and performance expectations, making it a critical component in any piping system.




