#12 - #16 O-Ring Adapter Fitting

The #12 - #16 O-Ring Adapter Fitting is a precision hydraulic and pneumatic coupling component engineered for applications requiring direct conversion between 12 AN male O-ring ports and 16 AN male threads. This straight-body adapter eliminates the need for bulky manifold modifications, making it essential for aerospace, automotive, and industrial fluid systems where space constraints and reliability are non-negotiable. Whether you're plumbing a high-pressure fuel system, brake line network, or custom hydraulic circuit, this fitting delivers dependable port compatibility without compromising system integrity.

Manufactured by AEROQUIP—a leader in fluid transfer solutions—this adapter is machined from aerospace-grade aluminum and finished with blue anodize protection, ensuring corrosion resistance and extended service life in demanding environments. The O-ring seal configuration meets or exceeds SAE J518 standards, providing leak-free performance under sustained pressure cycles. The straight-flow design minimizes turbulence and pressure drop, critical for systems where efficiency and heat management matter. Lightweight at just 0.19 lbs, the compact footprint (3.4 x 1.8 x 5.25 inches) permits installation in tight engine bays and equipment cabins without interference.

Ideal for professional technicians, fabricators, and OEM engineers upgrading or repairing fluid power systems, this AEROQUIP adapter (FCM2956) integrates seamlessly into existing 12 AN and 16 AN component networks. It is commonly specified in aftermarket fuel injection systems, custom cooling loops, and retrofit brake applications where OEM parts are unavailable or incompatible. Installation requires hand-tightening with appropriate hose or line adapters; proper torque specifications and O-ring lubrication follow SAE guidelines. Order with confidence—backed by AEROQUIP's reputation for precision and performance.