856A3498G03 is a precision aerospace component, compliant with AS9100D quality standards and FAA/EASA regulations, developed for large commercial turbofan engines, working as an engine low-pressure compressor (LPC) rotor seal ring

It is a core sealing structure for the LPC rotor, forming a tight seal between the rotor and the compressor casing, which is critical for reducing air leakage in the compression section, ensuring the LPC can maintain the required air pressure for subsequent engine working procedures, and avoiding unnecessary energy loss that would lower engine overall efficiency.

Made from high-strength, heat-resistant and wear-resistant nickel-based superalloy, it withstands operating temperatures from -55°C to 820°C and long-term friction with adjacent components. Weighing 0.37kg, it allows fast inspection and sealing performance testing during LPC MRO overhauls. FAA Part 25 certified, it is a key component for LPC operational stability.