Size (CM): 410*380*300

Weright (KG): 1550

J78031-140 is a precision-manufactured aerospace engine fuel system seal component, compliant with AS9100D quality standards and FAA/EASA regulations, designed for large commercial turbofan engines. It is a core sealing part in the engine fuel system, sealing the connection positions of fuel pipelines and fuel control valves, preventing aviation fuel leakage, which is critical for maintaining the pressure stability of the fuel supply system, ensuring the accurate delivery of fuel to the combustion chamber, and avoiding potential fire risks caused by fuel leakage.

Made from high-strength, fuel-resistant and temperature-resistant fluororubber composite, it withstands operating temperatures from -60°C to 240°C and long-term contact with aviation fuel. Weighing 0.057kg with a precision-machined sealing structure, it allows for fast installation and tightness verification during fuel system MRO overhauls. FAA Part 25 certified, it is a key component for engine fuel system safety.