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)

79-335SS N/A 0.081 N/A 0.003 N/A 0.341 N/A 0.005 N/A 0.503 N/A 2.1 N/A 8.7 N/A 12.8
79-354SS N/A 0.081 N/A 0.003 N/A 0.361 N/A 0.005 N/A 0.523 N/A 2.1 N/A 9.2 N/A 13.3
80-364VS N/A 0.081 N/A 0.003 N/A 0.369 N/A 0.005 N/A 0.531 N/A 2.1 N/A 9.4 N/A 13.5
79-450SS N/A 0.081 N/A 0.003 N/A 0.459 N/A 0.005 N/A 0.621 N/A 2.1 N/A 11.7 N/A 15.8
80-758SS N/A 0.081 N/A 0.003 N/A 0.769 N/A 0.009 N/A 0.931 N/A 2.1 N/A 19.5 N/A 23.6
81-925 N/A 0.081 N/A 0.003 N/A 0.925 N/A 0.010 N/A 1.087 N/A 2.1 N/A 23.5 N/A 27.6
81-1.114 N/A 0.081 N/A 0.003 N/A 1.114 N/A 0.010 N/A 1.276 N/A 2.1 N/A 28.3 N/A 32.4
81-1.489 N/A 0.081 N/A 0.003 N/A 1.489 N/A 0.012 N/A 1.651 N/A 2.1 N/A 37.8 N/A 41.9
80-3.483VS N/A 0.081 N/A 0.003 N/A 3.509 N/A 0.009 N/A 3.671 N/A 2.1 N/A 89.1 N/A 93.2
80-443SS N/A 0.082 N/A 0.003 N/A 0.452 N/A 0.005 N/A 0.616 N/A 2.1 N/A 11.5 N/A 15.6
80-551SS N/A 0.082 N/A 0.003 N/A 0.562 N/A 0.007 N/A 0.726 N/A 2.1 N/A 14.3 N/A 18.4
82-750 N/A 0.082 N/A 0.003 N/A 0.750 N/A 0.009 N/A 0.914 N/A 2.1 N/A 19.1 N/A 23.2
83-606 N/A 0.083 N/A 0.003 N/A 0.606 N/A 0.007 N/A 0.772 N/A 2.1 N/A 15.4 N/A 19.6
83-906 N/A 0.083 N/A 0.003 N/A 0.906 N/A 0.010 N/A 1.072 N/A 2.1 N/A 23.0 N/A 27.2
83-2.226 N/A 0.083 N/A 0.003 N/A 2.226 N/A 0.017 N/A 2.392 N/A 2.1 N/A 56.5 N/A 6.8
83-3.083 N/A 0.083 N/A 0.003 N/A 3.087 N/A 0.024 N/A 3.253 N/A 2.1 N/A 78.4 N/A 82.6
83-4.226 N/A 0.083 N/A 0.003 N/A 4.226 N/A 0.028 N/A 4.392 N/A 2.1 N/A 107.3 N/A 111.6
84-456 N/A 0.084 N/A 0.003 N/A 0.456 N/A 0.005 N/A 0.624 N/A 2.1 N/A 11.6 N/A 15.8
84-3.506 N/A 0.084 N/A 0.003 N/A 3.506 N/A 0.024 N/A 3.674 N/A 2.1 N/A 89.1 N/A 93.3
85-80 N/A 0.085 N/A 0.003 N/A 0.080 N/A 0.005 N/A 0.250 N/A 2.2 N/A 2.0 N/A 6.4
83-676SS N/A 0.085 N/A 0.003 N/A 0.690 N/A 0.009 N/A 0.860 N/A 2.2 N/A 17.5 N/A 21.8
84-2.661SS N/A 0.085 N/A 0.003 N/A 2.702 N/A 0.022 N/A 2.872 N/A 2.2 N/A 68.6 N/A 72.9
85-2.875 N/A 0.085 N/A 0.003 N/A 2.875 N/A 0.022 N/A 3.045 N/A 2.2 N/A 73.0 N/A 77.3
86-37 N/A 0.086 N/A 0.003 N/A 0.037 N/A 0.005 N/A 0.209 N/A 2.2 N/A 0.9 N/A 5.3
86-290 N/A 0.086 N/A 0.003 N/A 0.290 N/A 0.005 N/A 0.462 N/A 2.2 N/A 7.4 N/A 11.7
Unit of Measure
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