The curved design of these rings works like a spring, taking up play for a tight hold. Squeeze them with retaining ring pliers (sold separately) to install in the groove inside a bore or housing. Ring OD is measured with the ring uninstalled. The black-phosphate finish is mildly corrosion resistant in dry environments.

Thrust load capacity, also known as PR, is based on using a shaft that is harder than the ring.

3D CAD models availableFor technical drawings and 3-D models, click on a part number.

For Groove

Ring

For ID Dia. Wd. OD Thick. Min. Hardness Thrust Load

Capacity, lbs. Magnetic

Properties Specifications Met Pkg.

Qty. Pkg.

Black-Phosphate 1060-1090 Spring Steel

1/4" 0.268" 0.03" 0.28" 0.015" Rockwell C65 420 Magnetic ASME B18.27.3 50 90028A132 $8.10

3/8" 0.397" 0.04" 0.415" 0.025" Rockwell C44 1,060 Magnetic ASME B18.27.3 50 90028A207 13.54

1/2" 0.53" 0.055" 0.548" 0.035" Rockwell C44 2,010 Magnetic ASME B18.27.3 50 90028A343 13.63

5/8" 0.665" 0.055" 0.694" 0.035" Rockwell C44 2,500 Magnetic ASME B18.27.3 50 90028A357 13.85

3/4" 0.796" 0.055" 0.831" 0.035" Rockwell C44 3,040 Magnetic ASME B18.27.3 50 90028A418 15.94

7/8" 0.931" 0.062" 0.971" 0.042" Rockwell C44 5,220 Magnetic ASME B18.27.3 25 90028A586 9.82

1" 1.066" 0.062" 1.111" 0.042" Rockwell C44 6,030 Magnetic ASME B18.27.3 25 90028A595 9.84

1 1/8" 1.197" 0.07" 1.249" 0.05" Rockwell C47 8,010 Magnetic ASME B18.27.3 25 90028A665 10.87

1 1/4" 1.33" 0.07" 1.388" 0.05" Rockwell C47 8,930 Magnetic ASME B18.27.3 25 90028A668 10.01

1 3/8" 1.461" 0.07" 1.526" 0.05" Rockwell C47 9,840 Magnetic ASME B18.27.3 25 90028A760 11.71

1 1/2" 1.594" 0.07" 1.66" 0.05" Rockwell C47 10,700 Magnetic ASME B18.27.3 25 90028A852 15.02

1 5/8" 1.725" 0.1" 1.804" 0.062" Rockwell C47 14,400 Magnetic ASME B18.27.3 10 90028A913 7.69

1 3/4" 1.858" 0.1" 1.942" 0.062" Rockwell C47 15,500 Magnetic ASME B18.27.3 1 90028A970 .74