HU38633-1 is a precision-manufactured aerospace engine high-pressure turbine (HPT) blade platform seal, compliant with AS9100D quality standards and FAA/EASA regulations, designed for large commercial turbofan engines. It seals the gap between the platforms of adjacent HPT rotor blades, reducing the radial leakage of high-temperature, high-pressure exhaust gas, which is critical for maintaining the turbine's pressure ratio, improving the engine's thermal efficiency, and preventing the overheating of turbine disk components.

Made from heat-resistant, oxidation-resistant nickel-based superalloy, it withstands operating temperatures up to 1450°C and continuous scouring from high-speed gas flow. Weighing 0.05kg with a precision-machined matching structure, it allows for fast installation and tightness check during HPT MRO overhauls. FAA Part 25 certified, it is a key component for HPT operational reliability.