The Rotor Clip E-25ST PA is a radially assembled external bowed locking ring designed for 0.250" shaft diameters. This component effectively eliminates play in assemblies by exerting a consistent preload, ensuring secure retention of parts. Its bowed design provides a resilient force, accommodating accumulated tolerances and maintaining component stability. The ring features two prongs extending from the inner circumference to the open end, locking the ring firmly into place. Manufactured from carbon steel (SAE 1060-1090) with a phosphate finish, the E-25ST PA offers enhanced corrosion resistance, making it suitable for various industrial applications. The ring's dimensions include a groove diameter of 0.210 - 0.213 inches, groove width of 0.047 - 0.050 inches, groove depth of 0.020 inches, and a thickness of 0.023 - 0.027 inches. It has a free diameter of 0.204 - 0.208 inches and an outside diameter of 0.527 inches. The ring's bow height ranges from 0.050 to 0.065 inches, providing the necessary preload for effective retention. With a thrust load safety factor of 3, the E-25ST PA can handle thrust loads up to 259 lbs. and operates effectively at speeds up to 25,000 RPM. Its design allows for easy installation using standard retaining ring applicators, streamlining assembly processes and reducing labor costs. The E-25ST PA serves as an economical alternative to axially assembled external tapered section rings, offering a reliable solution for applications requiring secure and efficient component retention.