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)

30-118VS N/A 0.030 N/A 0.003 N/A 0.120 N/A 0.005 N/A 0.180 N/A 0.8 N/A 3.0 N/A 4.6
30-140SS N/A 0.030 N/A 0.003 N/A 0.141 N/A 0.005 N/A 0.201 N/A 0.8 N/A 3.6 N/A 5.1
30-176 N/A 0.030 N/A 0.003 N/A 0.176 N/A 0.005 N/A 0.236 N/A 0.8 N/A 4.5 N/A 6
30-208 N/A 0.030 N/A 0.003 N/A 0.208 N/A 0.005 N/A 0.268 N/A 0.8 N/A 5.3 N/A 6.8
30-212SS N/A 0.030 N/A 0.003 N/A 0.214 N/A 0.005 N/A 0.274 N/A 0.8 N/A 5.4 N/A 7.0
30-239VS N/A 0.030 N/A 0.003 N/A 0.241 N/A 0.005 N/A 0.301 N/A 0.8 N/A 6.1 N/A 7.6
30-272ES N/A 0.030 N/A 0.003 N/A 0.275 N/A 0.005 N/A 0.335 N/A 0.8 N/A 7.0 N/A 8.5
30-272SS N/A 0.030 N/A 0.003 N/A 0.275 N/A 0.005 N/A 0.335 N/A 0.8 N/A 7.0 N/A 8.5
30-368VS N/A 0.030 N/A 0.003 N/A 0.373 N/A 0.005 N/A 0.433 N/A 0.8 N/A 9.5 N/A 11.0
30-468 N/A 0.030 N/A 0.003 N/A 0.468 N/A 0.005 N/A 0.528 N/A 0.8 N/A 11.9 N/A 13.4
30-577 N/A 0.030 N/A 0.003 N/A 0.577 N/A 0.007 N/A 0.637 N/A 0.8 N/A 14.7 N/A 16.2
30-622 N/A 0.030 N/A 0.003 N/A 0.622 N/A 0.009 N/A 0.682 N/A 0.8 N/A 15.8 N/A 17.3
30-622SS N/A 0.030 N/A 0.003 N/A 0.631 N/A 0.009 N/A 0.691 N/A 0.8 N/A 16.0 N/A 17.6
30-690 N/A 0.030 N/A 0.003 N/A 0.690 N/A 0.009 N/A 0.750 N/A 0.8 N/A 17.5 N/A 19.1
30-810ES N/A 0.030 N/A 0.003 N/A 0.812 N/A 0.009 N/A 0.872 N/A 0.8 N/A 2.6 N/A 22.1
30-840 N/A 0.030 N/A 0.003 N/A 0.840 N/A 0.009 N/A 0.900 N/A 0.8 N/A 21.3 N/A 22.9
30-980SS N/A 0.030 N/A 0.003 N/A 0.994 N/A 0.010 N/A 1.054 N/A 0.8 N/A 25.2 N/A 26.8
30-1.010VS N/A 0.030 N/A 0.003 N/A 1.019 N/A 0.010 N/A 1.079 N/A 0.8 N/A 25.9 N/A 27.4
30-1.190 N/A 0.030 N/A 0.003 N/A 1.19 N/A 0.011 N/A 1.250 N/A 0.8 N/A 3.2 N/A 31.8
30-1.272 N/A 0.030 N/A 0.003 N/A 1.272 N/A 0.011 N/A 1.332 N/A 0.8 N/A 32.3 N/A 33.8
30-1.377ES N/A 0.030 N/A 0.003 N/A 1.379 N/A 0.013 N/A 1.439 N/A 0.8 N/A 35 N/A 36.6
30-1.635 N/A 0.030 N/A 0.003 N/A 1.635 N/A 0.013 N/A 1.695 N/A 0.8 N/A 41.5 N/A 43.1
30-2.472SS N/A 0.030 N/A 0.003 N/A 2.482 N/A 0.018 N/A 2.542 N/A 0.8 N/A 63.0 N/A 64.6
30-3.145 N/A 0.030 N/A 0.003 N/A 3.145 N/A 0.024 N/A 3.205 N/A 0.8 N/A 79.9 N/A 81.4
30-4.523 N/A 0.030 N/A 0.003 N/A 4.507 N/A 0.030 N/A 4.567 N/A 0.8 N/A 114.5 N/A 116
Unit of Measure
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