The Rotor Clip E-37SS MPS 3/8" Stainless Steel External E Retaining Ring is engineered to securely hold assemblies in place on shafts, effectively preventing axial movement. This retaining ring is radially assembled into machined grooves on shafts, providing a reliable shoulder for assembly retention. Its design features three prongs that make contact with the bottom of the groove, ensuring a firm grip and minimizing the risk of dislodgement under operational stresses. Constructed from stainless steel, the E-37SS MPS offers enhanced resistance to corrosion and wear, making it suitable for applications in automotive, aerospace, marine, and oil & gas industries where durability and longevity are critical. The ring's dimensions include a shaft diameter of 0.375 inches, a groove diameter ranging from 0.303 to 0.306 inches, a groove width between 0.039 and 0.042 inches, and a groove depth of 0.036 inches. It has a free diameter between 0.288 and 0.296 inches, an outside diameter of 0.660 inches, and a clearance diameter installed in the groove of 0.680 inches. The ring's thickness varies between 0.033 and 0.037 inches. With a maximum thrust load capacity of 528 pounds and a maximum operating speed of 28,000 RPM, the E-37SS MPS is designed to perform reliably under demanding conditions. Its installation does not require lug holes, facilitating easy assembly using standard retaining ring applicators. This design choice also eliminates the need for additional hardware, streamlining the assembly process and reducing potential points of failure. The E-37SS MPS serves as an economical alternative to axially assembled external tapered section rings, offering a cost-effective solution without compromising on performance. Its robust construction and design make it a dependable choice for applications requiring secure assembly retention and resistance to environmental factors.