Slide a nut and ferrule onto one end of the tubing. Bend or flex the tubing as necessary to push the tubing all the way into the detail until it seats firmly. Interested in more information about our process or products?Joe Quintiliani of Blasch Precision Ceramics demonstrates how quickly and easily Blasch one and two piece ferrules can be installed. moreAt Perfect Engineers, our PE-LOCK double ferrule compression fittings are precision-engineered to offer reliable connections—but only when installed correctly. This guide provides a step-by-step process, common mistakes to avoid, torque tips, and maintenance suggestions to help your team install. Cut the tube square (do not use a role cutter) and de-burr the end of the tube inside and out. This is essential for a proper.