The 1.25" Aluminum Barbed Coupler from Duraline represents a fusion of innovative design and practical functionality, making it an essential component for pipe and conduit systems. Engineered for reliability, this coupler features a unique design that optimizes sealing and tensile strength as internal air pressure increases during cable placement. Each barbed ring serves as a separate full circumference seal, providing double protection against air leaks and ensuring a robust connection. Crafted from durable aluminum, its precision-cut barbs effectively grip the duct, enabling high sealing efficiency and superior pull-out strength. Installation requires a hydraulic or mechanical coupling press to guarantee proper fitting, thus ensuring long-term performance. However, it’s important to note that this coupler is not suitable for wet environments or extreme pH conditions outside the range of 4-8, making it best suited for controlled conditions.