Fitting Plug ORB -6an Steel

The Fitting Plug ORB -6AN Steel from Waterman Racing Components is a precision hydraulic and pneumatic system closure component designed for high-performance racing, automotive, and industrial fluid transfer applications. This O-ring boss (ORB) fitting plug seals off unused ORB ports in fluid distribution manifolds, preventing contamination, fluid loss, and system failure. Engineered for professionals who demand reliability under extreme pressure and temperature conditions, this plug is essential for any custom fuel system, hydraulic circuit, or cooling loop assembly.

Manufactured in steel with a robust construction, the Fitting Plug ORB -6AN Steel features an integral O-ring seal that creates a leak-proof barrier without requiring additional sealing compounds. The Allen head design enables secure installation and removal using standard hex key tools, allowing for straightforward serviceability in tight engine bays and manifold configurations. At -6AN (which designates a 3/8-inch inner diameter port), this fitting accommodates medium-flow applications typical in race-spec fuel systems, hydraulic brakes, and transmission coolers. The steel material provides superior durability and corrosion resistance compared to aluminum alternatives, particularly in salt-spray and high-vibration environments.

Racers, fabricators, and restoration specialists rely on Waterman Racing Comp. plugs to complete custom fuel injection systems, air suspension manifolds, and power steering circuits where ORB port blanking is non-negotiable. Installation is straightforward—hand-tighten initially, then apply precise torque using the Allen head to prevent over-torquing and seal damage. Compatibility extends across any system using standard -6AN ORB ports, making this a universal solution for professional-grade applications. Lightweight at just 0.03 lbs, it introduces minimal additional mass while providing maximum system integrity.