Precision Associates, Inc.
Precision Associates, Inc.
3800 North Washington Ave.
Minneapolis, MN 55412-2142
Toll Free: 1-800-394-6590
Local: +1 612-333-7464
Sales: +1 612-334-9190
Fax: 612-342-2417
Email: [email protected]
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Search our 2,700+ Standard & Special Size O-Ring Tooling List. O-Rings are available with inside diameters (ID) as small as .004" and as large as 34". If you can't find your O-Ring size, please call - new O ring sizes are added regularly. If we are not tooled for your non-standard O-Ring, we can make a special tool in our On-Site mold shop.

Click here to view our O-Ring Brochure.
O-Ring Picture
Unit of Measure
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Item #

C/S (inches)

C/S Tolerance (±)

I.D. (inches)

I.D. Tolerance (±)

O.D. (REF) (inches)

Metric C/S (mm)

Metric I.D. (mm)

Metric O.D. (mm)

70-313VS N/A 0.071 N/A 0.003 N/A 0.317 N/A 0.005 N/A 0.459 N/A 1.8 N/A 8.1 N/A 11.7
70-344SS N/A 0.071 N/A 0.003 N/A 0.349 N/A 0.005 N/A 0.491 N/A 1.8 N/A 8.9 N/A 12.5
70-418SS N/A 0.071 N/A 0.003 N/A 0.425 N/A 0.005 N/A 0.567 N/A 1.8 N/A 1.8 N/A 14.4
70-468SS N/A 0.071 N/A 0.003 N/A 0.472 N/A 0.005 N/A 0.614 N/A 1.8 N/A 12.0 N/A 15.6
70-478VS N/A 0.071 N/A 0.003 N/A 0.482 N/A 0.005 N/A 0.624 N/A 1.8 N/A 12.2 N/A 15.8
70-495SS N/A 0.071 N/A 0.003 N/A 0.503 N/A 0.005 N/A 0.645 N/A 1.8 N/A 12.8 N/A 16.4
70-575SS N/A 0.071 N/A 0.003 N/A 0.585 N/A 0.007 N/A 0.727 N/A 1.8 N/A 14.9 N/A 18.5
70-590VS N/A 0.071 N/A 0.003 N/A 0.596 N/A 0.007 N/A 0.738 N/A 1.8 N/A 15.1 N/A 18.7
70-646SS N/A 0.071 N/A 0.003 N/A 0.658 N/A 0.009 N/A 0.800 N/A 1.8 N/A 16.7 N/A 2.3
71-810 N/A 0.071 N/A 0.003 N/A 0.810 N/A 0.009 N/A 0.952 N/A 1.8 N/A 2.6 N/A 24.2
70-850VS N/A 0.071 N/A 0.003 N/A 0.858 N/A 0.009 N/A 1.000 N/A 1.8 N/A 21.8 N/A 25.4
70-879SS N/A 0.071 N/A 0.003 N/A 0.896 N/A 0.009 N/A 1.038 N/A 1.8 N/A 22.8 N/A 26.4
70-985SS N/A 0.071 N/A 0.003 N/A 0.992 N/A 0.010 N/A 1.134 N/A 1.8 N/A 25.2 N/A 28.8
70-1.082SS N/A 0.071 N/A 0.003 N/A 1.100 N/A 0.010 N/A 1.242 N/A 1.8 N/A 27.9 N/A 31.5
70-1.114SS N/A 0.071 N/A 0.003 N/A 1.130 N/A 0.010 N/A 1.272 N/A 1.8 N/A 28.7 N/A 32.3
70-1.378VS N/A 0.071 N/A 0.003 N/A 1.397 N/A 0.013 N/A 1.539 N/A 1.8 N/A 35.5 N/A 39.1
70-1.437SS N/A 0.071 N/A 0.003 N/A 1.454 N/A 0.013 N/A 1.596 N/A 1.8 N/A 36.9 N/A 4.5
70-1.738VS N/A 0.071 N/A 0.003 N/A 1.761 N/A 0.015 N/A 1.903 N/A 1.8 N/A 44.7 N/A 48.3
70-1.864SS N/A 0.071 N/A 0.003 N/A 1.900 N/A 0.015 N/A 2.042 N/A 1.8 N/A 48.3 N/A 51.9
70-2.410SS N/A 0.071 N/A 0.003 N/A 2.447 N/A 0.018 N/A 2.589 N/A 1.8 N/A 62.2 N/A 65.8
70-2.690VS N/A 0.071 N/A 0.003 N/A 2.715 N/A 0.020 N/A 2.857 N/A 1.8 N/A 69 N/A 72.6
70-2.739SS N/A 0.071 N/A 0.003 N/A 2.792 N/A 0.020 N/A 2.934 N/A 1.8 N/A 7.9 N/A 74.5
70-3.114VS N/A 0.071 N/A 0.003 N/A 3.146 N/A 0.024 N/A 3.288 N/A 1.8 N/A 79.9 N/A 83.5
70-6.722SS N/A 0.071 N/A 0.003 N/A 6.785 N/A 0.040 N/A 6.927 N/A 1.8 N/A 172.3 N/A 175.9
70-9.989VS N/A 0.071 N/A 0.003 N/A 10.112 N/A 0.055 N/A 10.254 N/A 1.8 N/A 256.8 N/A 26.5
Unit of Measure
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