PWA111065 is a precision-engineered aerospace engine high-pressure turbine (HPT) blade tip shroud seal, compliant with AS9100D quality standards and FAA/EASA regulations, designed for large commercial turbofan engines. It seals the tip gap between the HPT rotor blades and the turbine inner shroud, minimizing the leakage of high-temperature, high-pressure combustion gas over the blade tips, which is critical for maintaining the HPT's pressure ratio, optimizing energy conversion efficiency, and reducing the engine's specific fuel consumption.

Made from a heat-resistant, oxidation-resistant nickel-based superalloy, it withstands operating temperatures up to 1520°C and continuous high-speed gas scouring. Weighing 0.12kg with a precision-machined mating surface, it enables fast installation and gap verification during HPT MRO overhauls. FAA Part 25 certified, it is a key component for HPT operational performance and engine efficiency.