#12 x 1-1/16-12 (#12) Radius O-Ring Fitting Bk

The #12 x 1-1/16-12 Radius O-Ring Fitting in black from Fragola is an essential hydraulic connection component designed for high-performance fuel, oil, and coolant line applications in modified and race vehicles. This fitting is ideal for mechanics and automotive enthusiasts who require reliability in custom fuel systems, supercharger setups, and engine modifications where standard hose clamps may not suffice.

The radius O-ring design of this fitting provides superior sealing integrity compared to conventional straight-thread adapters, effectively eliminating leaks that can occur in poorly sealed fuel and pressure lines. Fragola's innovative radius O-ring technology features a precisely machined groove that captures and compresses an elastomer seal, creating a robust metal-to-metal junction with redundant sealing surfaces. Constructed from black anodized aluminum, this fitting resists corrosion from fuel additives and engine heat, ensuring structural integrity under sustained pressure cycles.

This fitting is particularly beneficial for applications involving carburetor fuel inlet ports, auxiliary fuel system plumbing, and coolant bypass circuits, where vibration and thermal cycling could compromise O-ring performance. The #12 size accommodates hoses and adapters rated for high-flow applications, while the 1-1/16-12 thread specification ensures compatibility with common fuel rails, filter housings, and pressure regulators found in various engine builds.