PWA211433 is a precision aerospace component, compliant with AS9100D quality standards and FAA/EASA regulations, designed for the fuel systems of large commercial aircraft.

It acts as a fuel control valve seal ring, forming a high-precision, fuel-resistant seal between the valve's spool and valve body. This seal ensures the valve can accurately regulate the flow of aviation fuel to the engine, maintaining stable fuel supply according to the engine's operating status, avoiding fuel leakage that would cause fuel waste, fire risks, or unstable engine power output, which could affect flight performance, takeoff and landing safety.

Made from fuel-resistant, high-temperature resistant fluorocarbon rubber, it operates stably at -50°C to 260°C, and resists long-term contact with all types of aviation fuel. Weighing 0.07kg, it enables fast MRO replacement, a critical component for engine fuel supply stability.