Rings / Radially Assembled Retaining Rings / ME


Product Image


Part Data

  • Housing or Shaft Shaft
  • Axial or Radial Radial
  • Shaft Diameter Ds 0.709 inches
  • Ds mm 18.00 mm
  • Groove Diameter Dg 14.150 - 14.300 mm
  • Groove Width W 1.40 - 1.55 mm
  • Groove Depth D 1.85 mm
  • Free Diameter Df 13.750 - 14.000 mm
  • Thickness T *** 1.24 - 1.36 mm
  • Outside Diameter G 27.20 mm
  • Clearance Dia. Installed In Groove L2 27.90 mm
  • Weight Per 1000 Pcs. 2.300 kg
  • Edge Margin Y Min. mm
  • Hardness ST 48.0 - 52.0 HRC
  • Hardness SS 44.0 - 51.0 HRC
  • Hardness BC 37.0 - 43.0 HRC
  • Interchange Waldes Truarc 11-420 0180
  • Interchange IRR
  • Interchange Anderton
  • Interchange Mil Or Aero
  • Interchange Din

Performance Data

  • Thrust Load Ring Safety Factor Of 3 Pr 8.70 kN
  • Thrust Load Groove Safety Factor Of 2 Pg 5.40 kN
  • R.P.M. Limits Standard Material RPM 9000


  • Carbon Steel (SAE 1060-1090)
  • Stainless Steel (PH15-7 Mo, PH17-7)
  • Beryllium Copper
  • Special Material Grades


For plated rings, add .002" (.05 mm) to the listed maximum thickness.

  • PA - Phosphate, Carbon Steel
  • PD - Phosphate and Oil, Carbon Steel
  • PAL - Phosphate with Sealer, Carbon Steel
  • HPD - Heavy Phosphate and Oil, Carbon Steel
  • ZD - Zinc Plating, Carbon Steel
  • ZF - Zinc Bright, Carbon Steel
  • ZDL - Zinc Dichromate with Sealer, Carbon Steel
  • HZDL - Heavy Zinc Dichromate with Sealer, Carbon Steel
  • Z3X - Trivalent Chromate over Zinc, Carbon Steel
  • ZFF - Zinc Flash, Carbon Steel
  • CF - Copper Flash, Carbon Steel


Radially Assembled, External E, ANSI Metric. Perhaps the most popular and widely used radial retaining ring is the E (so named because it is shaped like the letter E). Three prongs make contact with the bottom of the groove and provide a shoulder for effe

Custom solutions

Can’t find what you’re looking for in an existing product, need a modified version of one of our standard parts, or simply aren’t sure what part you need?

Submit your custom specifications

Need help? Contact our Engineering team


CAD Models are provided for informational purposes only and may not represent the final part you receive.  Manufacturer assumes no responsibility for any such inconsistencies , and disclaims any liability to any party for any loss, damage, or disruption which may arise therefrom. Always contact Manufacturer for final measurements when specified in your design.


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