Rotor Clip E-25SS Mps E Style Retaining Ring 1/4 in Shaft

Product Description

The ROTOR CLIP E-25SS MPS is an external E style retaining ring designed for use on shafts with a 0.25-inch diameter and a groove diameter of 0.21 inches. Manufactured from 15-7 grade 632 stainless steel and finished with a passivated coating, this ring offers corrosion resistance suited to demanding service environments. Ring thickness measures 0.025 inches and groove width is 0.029 inches. The part meets AMS-5529, UNS S15700, and ISO 13485:2015 standards and carries Military Specification MS 16633-4025. It is installed by machinists, maintenance technicians, and assembly professionals working with precision shaft assemblies.

This retaining ring is used in light-duty precision shaft applications across industrial, medical device, and aerospace-adjacent assemblies where a compact E style ring is required. The three-prong E style design seats into a machined groove on the shaft exterior, retaining components axially without threading or welding. It is appropriate for applications where material grade, hardness, and dimensional tolerance must meet documented standards. The passivated finish is typical for environments where oxidation resistance is required.

Key Features

• E style external design with three prongs for secure axial retention on 0.25-inch shafts
• 15-7 grade 632 stainless steel with hardness rated at 63 to 69.5 HR30N
• Passivated finish for corrosion resistance in sensitive or wet environments
• Meets AMS-5529, UNS S15700, ISO 13485:2015, and Military Specification MS 16633-4025
• Tight dimensional tolerances: groove diameter tolerance 0.000 to 0.003 inches, ring thickness tolerance -0.002 to 0.002 inches

Compatibility

Designed for use on shafts with a 0.25-inch diameter and a machined external groove conforming to a 0.21-inch groove diameter, 0.029-inch groove width, and 0.020-inch groove depth per the dimensions specified for this part.

Installation Notes

E style retaining rings are typically installed and removed using dedicated E ring applicator pliers or push-on tooling appropriate for the ring size. Before installation, verify the shaft groove dimensions match the ring specifications to ensure proper seating and retention. Always wear appropriate eye protection when installing or removing snap rings, as improper installation can cause the ring to eject. Follow applicable industry and equipment standards for the assembly in which this ring is used.