Flare Cap #10

The Russell Flare Cap #10 AN is an aluminum hydraulic and pneumatic fitting designed to safely cap and seal 10 AN port connections. Manufactured from lightweight, corrosion-resistant blue anodized aluminum, this cap protects open AN ports from contamination during system assembly, testing, maintenance, and storage. The flare design ensures a positive seal that prevents fluid leakage and maintains system integrity when connections are not in use.

Built to AN (Army-Navy) standards, the #10 designation corresponds to a 5/8-inch O.D. tubing size and a 37-degree flare angle—the industry standard for aerospace, automotive, hydraulic, and pneumatic systems. The blue anodized finish provides additional corrosion resistance and UV protection, making it suitable for both indoor shop environments and outdoor equipment applications where exposure to moisture or salt air is a concern. The compact 2.5 x 1.6 x 4.9-inch form factor and minimal 0.09-pound weight make it easy to store, transport, and install without adding bulk to system assemblies.

Technicians, mechanics, and system builders rely on AN flare caps to protect open ports during assembly workflows, pressure testing, and long-term storage. Whether capping fuel lines in racing applications, sealing hydraulic manifolds in heavy equipment, or protecting pneumatic systems in manufacturing environments, a quality cap prevents internal contamination that could compromise performance or require costly flush cycles. Russell's AN fittings are recognized for precision manufacturing and consistent thread engagement, ensuring reliable seals across repeated connect-disconnect cycles.

This single cap is sold individually, allowing you to purchase exactly the quantity needed for your specific port count without excess inventory. Stock multiple #10 caps in your shop, vehicle, or service kit to have reliable protection on hand whenever AN connections require temporary sealing.