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)

80-250 N/A 0.080 N/A 0.003 N/A 0.250 N/A 0.005 N/A 0.410 N/A 2.0 N/A 6.4 N/A 1.4
80-364 N/A 0.080 N/A 0.003 N/A 0.364 N/A 0.005 N/A 0.524 N/A 2.0 N/A 9.2 N/A 13.3
79-370SS N/A 0.080 N/A 0.003 N/A 0.375 N/A 0.005 N/A 0.535 N/A 2.0 N/A 9.5 N/A 13.6
80-400 N/A 0.080 N/A 0.003 N/A 0.400 N/A 0.005 N/A 0.560 N/A 2.0 N/A 1.2 N/A 14.2
80-406 N/A 0.080 N/A 0.003 N/A 0.406 N/A 0.005 N/A 0.566 N/A 2.0 N/A 1.3 N/A 14.4
79-623SS N/A 0.080 N/A 0.003 N/A 0.634 N/A 0.009 N/A 0.794 N/A 2.0 N/A 16.1 N/A 2.2
79-630SS N/A 0.080 N/A 0.003 N/A 0.637 N/A 0.009 N/A 0.797 N/A 2.0 N/A 16.2 N/A 2.2
79-669VS N/A 0.080 N/A 0.003 N/A 0.673 N/A 0.009 N/A 0.833 N/A 2.0 N/A 17.1 N/A 21.2
80-796 N/A 0.080 N/A 0.003 N/A 0.796 N/A 0.009 N/A 0.956 N/A 2.0 N/A 2.2 N/A 24.3
80-1.000SS N/A 0.080 N/A 0.003 N/A 1.010 N/A 0.010 N/A 1.170 N/A 2.0 N/A 25.7 N/A 29.7
80-1.370 N/A 0.080 N/A 0.003 N/A 1.370 N/A 0.012 N/A 1.530 N/A 2.0 N/A 34.8 N/A 38.9
79-1.457ES N/A 0.080 N/A 0.003 N/A 1.466 N/A 0.012 N/A 1.626 N/A 2.0 N/A 37.2 N/A 41.3
80-1.921 N/A 0.080 N/A 0.003 N/A 1.921 N/A 0.015 N/A 2.081 N/A 2.0 N/A 48.8 N/A 52.9
80-2.000 N/A 0.080 N/A 0.003 N/A 2.000 N/A 0.017 N/A 2.160 N/A 2.0 N/A 5.8 N/A 54.9
79-2.283ES N/A 0.080 N/A 0.003 N/A 2.304 N/A 0.020 N/A 2.464 N/A 2.0 N/A 58.5 N/A 62.6
79-2.480SS N/A 0.080 N/A 0.003 N/A 2.508 N/A 0.020 N/A 2.668 N/A 2.0 N/A 63.7 N/A 67.8
80-2.585 N/A 0.080 N/A 0.003 N/A 2.585 N/A 0.020 N/A 2.745 N/A 2.0 N/A 65.7 N/A 69.7
79-3.218VS N/A 0.080 N/A 0.003 N/A 3.257 N/A 0.024 N/A 3.417 N/A 2.0 N/A 82.7 N/A 86.8
80-3.375 N/A 0.080 N/A 0.003 N/A 3.375 N/A 0.024 N/A 3.535 N/A 2.0 N/A 85.7 N/A 89.8
80-3.500 N/A 0.080 N/A 0.003 N/A 3.5 N/A 0.024 N/A 3.660 N/A 2.0 N/A 88.9 N/A 93
79-5.315VS N/A 0.080 N/A 0.003 N/A 5.396 N/A 0.035 N/A 5.556 N/A 2.0 N/A 137.1 N/A 141.1
80-6.250 N/A 0.080 N/A 0.003 N/A 6.250 N/A 0.040 N/A 6.410 N/A 2.0 N/A 158.8 N/A 162.8
80-6.500 N/A 0.080 N/A 0.003 N/A 6.500 N/A 0.040 N/A 6.660 N/A 2.0 N/A 165.1 N/A 169.2
81-87 N/A 0.081 N/A 0.003 N/A 0.087 N/A 0.005 N/A 0.249 N/A 2.1 N/A 2.2 N/A 6.3
80-208VS N/A 0.081 N/A 0.003 N/A 0.210 N/A 0.005 N/A 0.372 N/A 2.1 N/A 5.3 N/A 9.4
Unit of Measure
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