The Carrier / Carlyle Flywheel Retaining Washer is a critical component used to secure the flywheel to the compressor shaft in Carrier and Carlyle refrigeration systems. The washer helps prevent the flywheel from loosening during operation, ensuring stable and reliable performance. By maintaining the flywheel in place, it contributes to the efficient functioning of the compressor, reducing wear and extending the overall lifespan of the system.