1C9372G09 is a precision-manufactured aerospace engine low-pressure turbine (LPT) blade shank seal, compliant with AS9100D quality standards and FAA/EASA regulations, designed for large commercial turbofan engines. It seals the gap between the LPT blade shank and the rotor disk slot, reducing the leakage of cooling air and exhaust gas, which is critical for maintaining the temperature balance of the turbine components, preventing overheating of the rotor disk, and ensuring the structural integrity of the LPT during long-term operation.

Made from heat-resistant, wear-resistant nickel-based superalloy, it withstands operating temperatures up to 950°C and continuous mechanical and gas impact. Weighing 0.04kg with a precision-machined structure, it allows for fast installation and tightness check during LPT MRO overhauls. FAA Part 25 certified, it is a key component for LPT operational safety.