HU55391-1 is a precision-manufactured aerospace engine combustion chamber liner component, compliant with AS9100D quality standards and FAA/EASA regulations, designed for large commercial turbofan engines. It is a core protective and heat-isolating part in the combustion chamber, directly withstanding the high-temperature and high-pressure environment of fuel combustion, which is critical for isolating the combustion heat from the engine's outer casing, maintaining the structural integrity of the combustion chamber, and ensuring the normal operation of adjacent engine components.

Made from heat-resistant, high-strength nickel-based superalloy with a thermal barrier coating, it withstands operating temperatures up to 1650°C and continuous thermal impact. Weighing 0.89kg with a precision-machined heat-dissipating structure, it allows for fast replacement and surface condition inspection during combustion chamber MRO overhauls. FAA Part 25 certified, it is a key component for combustion chamber operational safety.