2LJ814A5151 is a precision aerospace component, compliant with AS9100D quality standards and FAA/EASA regulations, designed for the flight control systems of large commercial aircraft.

It serves as a flight control actuator position sensor O-ring seal, forming a tight, pressure-resistant seal between the sensor's probe and the actuator housing. This seal prevents hydraulic fluid from entering the sensor's sensitive electronic components, ensuring the sensor can accurately transmit the actuator's position data to the flight control computer, avoiding inaccurate position signals that would cause incorrect adjustment of flight control surfaces, reduce flight control precision, or affect flight stability.

Made from oil-resistant, high-temperature resistant fluorosilicone rubber, it operates stably at -45°C to 250°C, and resists long-term contact with aviation hydraulic fluids. Weighing 0.04kg, it allows fast MRO replacement, a critical component for flight control data accuracy.