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)

35-100SS N/A 0.035 N/A 0.003 N/A 0.101 N/A 0.005 N/A 0.171 N/A 0.9 N/A 2.6 N/A 4.3
34-118SS N/A 0.035 N/A 0.003 N/A 0.120 N/A 0.005 N/A 0.190 N/A 0.9 N/A 3.0 N/A 4.8
35-130 N/A 0.035 N/A 0.003 N/A 0.130 N/A 0.005 N/A 0.200 N/A 0.9 N/A 3.3 N/A 5.1
35-188VS N/A 0.035 N/A 0.003 N/A 0.190 N/A 0.005 N/A 0.260 N/A 0.9 N/A 4.8 N/A 6.6
35-190 N/A 0.035 N/A 0.003 N/A 0.190 N/A 0.005 N/A 0.260 N/A 0.9 N/A 4.8 N/A 6.6
35-250 N/A 0.035 N/A 0.003 N/A 0.250 N/A 0.005 N/A 0.320 N/A 0.9 N/A 6.4 N/A 8.1
35-283SS N/A 0.035 N/A 0.003 N/A 0.286 N/A 0.005 N/A 0.356 N/A 0.9 N/A 7.3 N/A 9.0
35-322 N/A 0.035 N/A 0.003 N/A 0.322 N/A 0.005 N/A 0.392 N/A 0.9 N/A 8.2 N/A 10.0
35-361 N/A 0.035 N/A 0.003 N/A 0.361 N/A 0.005 N/A 0.431 N/A 0.9 N/A 9.2 N/A 1.9
35-362 N/A 0.035 N/A 0.003 N/A 0.361 N/A 0.005 N/A 0.431 N/A 0.9 N/A 9.2 N/A 1.9
35-950SS N/A 0.035 N/A 0.003 N/A 0.959 N/A 0.009 N/A 1.029 N/A 0.9 N/A 24.4 N/A 26.1
36-89 N/A 0.036 N/A 0.003 N/A 0.089 N/A 0.005 N/A 0.161 N/A 0.9 N/A 2.3 N/A 4.1
36-138 N/A 0.036 N/A 0.003 N/A 0.138 N/A 0.005 N/A 0.210 N/A 0.9 N/A 3.5 N/A 5.3
36-152 N/A 0.036 N/A 0.003 N/A 0.152 N/A 0.005 N/A 0.224 N/A 0.9 N/A 3.9 N/A 5.7
36-312SS N/A 0.036 N/A 0.003 N/A 0.315 N/A 0.005 N/A 0.387 N/A 0.9 N/A 8.0 N/A 9.8
35-318VS N/A 0.036 N/A 0.003 N/A 0.323 N/A 0.005 N/A 0.395 N/A 0.9 N/A 8.2 N/A 10.0
36-465 N/A 0.036 N/A 0.003 N/A 0.465 N/A 0.005 N/A 0.537 N/A 0.9 N/A 11.8 N/A 13.6
36-732 N/A 0.036 N/A 0.003 N/A 0.730 N/A 0.009 N/A 0.802 N/A 0.9 N/A 18.5 N/A 2.4
36-1.118 N/A 0.036 N/A 0.003 N/A 1.120 N/A 0.010 N/A 1.192 N/A 0.9 N/A 28.4 N/A 3.3
37-172 N/A 0.037 N/A 0.003 N/A 0.172 N/A 0.005 N/A 0.246 N/A 0.9 N/A 4.4 N/A 6.2
37-220 N/A 0.037 N/A 0.003 N/A 0.220 N/A 0.005 N/A 0.294 N/A 0.9 N/A 5.6 N/A 7.5
36-272SS N/A 0.037 N/A 0.003 N/A 0.277 N/A 0.005 N/A 0.351 N/A 0.9 N/A 7.0 N/A 8.9
37-1.080 N/A 0.037 N/A 0.003 N/A 1.082 N/A 0.010 N/A 1.156 N/A 0.9 N/A 27.5 N/A 29.4
38-100 N/A 0.038 N/A 0.003 N/A 0.100 N/A 0.005 N/A 0.176 N/A 1.0 N/A 2.5 N/A 4.5
38-157 N/A 0.038 N/A 0.003 N/A 0.157 N/A 0.005 N/A 0.233 N/A 1.0 N/A 4.0 N/A 5.9
Unit of Measure
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