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.

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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)

32-220 N/A 0.032 N/A 0.003 N/A 0.220 N/A 0.005 N/A 0.284 N/A 0.8 N/A 5.6 N/A 7.2
32-250 N/A 0.032 N/A 0.003 N/A 0.250 N/A 0.005 N/A 0.314 N/A 0.8 N/A 6.4 N/A 8.0
32-551SS N/A 0.032 N/A 0.003 N/A 0.556 N/A 0.007 N/A 0.620 N/A 0.8 N/A 14.1 N/A 15.7
32-860 N/A 0.032 N/A 0.003 N/A 0.860 N/A 0.009 N/A 0.924 N/A 0.8 N/A 21.8 N/A 23.5
32-995 N/A 0.032 N/A 0.003 N/A 0.995 N/A 0.010 N/A 1.059 N/A 0.8 N/A 25.3 N/A 26.9
32-1.039 N/A 0.032 N/A 0.003 N/A 1.039 N/A 0.010 N/A 1.103 N/A 0.8 N/A 26.4 N/A 28
32-1.050 N/A 0.032 N/A 0.003 N/A 1.050 N/A 0.010 N/A 1.114 N/A 0.8 N/A 26.7 N/A 28.3
32-1.100 N/A 0.032 N/A 0.003 N/A 1.100 N/A 0.010 N/A 1.164 N/A 0.8 N/A 27.9 N/A 29.6
32-1.790 N/A 0.032 N/A 0.003 N/A 1.790 N/A 0.015 N/A 1.854 N/A 0.8 N/A 45.5 N/A 47.1
32-2.500SS N/A 0.032 N/A 0.003 N/A 2.524 N/A 0.018 N/A 2.588 N/A 0.8 N/A 64.1 N/A 65.7
32-295VS N/A 0.032 N/A 0.003 N/A 0.297 N/A 0.005 N/A 0.361 N/A 0.8 N/A 7.5 N/A 9.2
33-210 N/A 0.033 N/A 0.003 N/A 0.210 N/A 0.005 N/A 0.276 N/A 0.8 N/A 5.3 N/A 7.0
34-46 N/A 0.034 N/A 0.003 N/A 0.046 N/A 0.004 N/A 0.114 N/A 0.9 N/A 1.2 N/A 2.9
34-70 N/A 0.034 N/A 0.003 N/A 0.070 N/A 0.005 N/A 0.138 N/A 0.9 N/A 1.8 N/A 3.5
33-78SS N/A 0.034 N/A 0.003 N/A 0.080 N/A 0.005 N/A 0.148 N/A 0.9 N/A 2.0 N/A 3.8
34-86 N/A 0.034 N/A 0.003 N/A 0.086 N/A 0.005 N/A 0.154 N/A 0.9 N/A 2.2 N/A 3.9
34-106 N/A 0.034 N/A 0.003 N/A 0.106 N/A 0.005 N/A 0.174 N/A 0.9 N/A 2.7 N/A 4.4
33-210SS N/A 0.034 N/A 0.003 N/A 0.214 N/A 0.005 N/A 0.282 N/A 0.9 N/A 5.4 N/A 7.2
34-232SS N/A 0.034 N/A 0.003 N/A 0.235 N/A 0.005 N/A 0.303 N/A 0.9 N/A 6.0 N/A 7.7
34-256 N/A 0.034 N/A 0.003 N/A 0.256 N/A 0.005 N/A 0.324 N/A 0.9 N/A 6.5 N/A 8.2
34-306 N/A 0.034 N/A 0.003 N/A 0.306 N/A 0.005 N/A 0.374 N/A 0.9 N/A 7.8 N/A 9.5
34-432 N/A 0.034 N/A 0.003 N/A 0.432 N/A 0.005 N/A 0.500 N/A 0.9 N/A 11.0 N/A 12.7
34-611ES N/A 0.034 N/A 0.003 N/A 0.617 N/A 0.009 N/A 0.685 N/A 0.9 N/A 15.7 N/A 17.4
35-65 N/A 0.035 N/A 0.003 N/A 0.065 N/A 0.004 N/A 0.135 N/A 0.9 N/A 1.7 N/A 3.4
35-75 N/A 0.035 N/A 0.003 N/A 0.075 N/A 0.005 N/A 0.145 N/A 0.9 N/A 1.9 N/A 3.7
Unit of Measure
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