Due to the fact that there are literally dozens of O-Ring standards globally, finding a single recognized standard for tolerances is virtually impossible. For this reason, we have adopted the tolerances shown in the following table, which are based in ISO 3601-1 Series G, and DIN 3771. For those sizes not specified in either of these standards, we have filled in the gaps through process of extrapolation. If tolerances other than those specified are required, please contact our Customer Service department for a special quotation.
0. 0 0 to 1. 8 0 ± 0 .0 8
1. 8 1 to 2. 6 5 ± 0. 0 9
2. 6 6 to 3. 5 5 ± 0. 1 0
3. 5 6 to 5. 3 0 ± 0. 1 3
5. 3 1 to 7. 0 0 ± 0. 1 5
| Inside Diameter Tolerances |
| I.D. |
Tol. ± |
| 1.80 to 2.50 |
0.13 |
| 2.51 to 4.50 |
0.14 |
| 4.51 to 6.30 |
0.15 |
| 6.31 to 8.50 |
0.16 |
| 8.51 to 10.00 |
0.17 |
| 10.01 to 11.20 |
0.18 |
| 11.21 to 14.00 |
0.19 |
| 14.01 to 16.00 |
0.2 |
| 16.01 to 18.00 |
0.21 |
| 18.01 to 20.00 |
0.22 |
| 20.01 to 21.20 |
0.23 |
| 21.21 to 23.60 |
0.24 |
| 23.61 to 25.00 |
0.25 |
| 25.01 to 26.50 |
0.26 |
| 26.51 to 28.00 |
0.28 |
| 28.01 to 30.00 |
0.29 |
| 30.01 to 31.50 |
0.31 |
| 31.51 to 33.50 |
0.32 |
| 33.51 to 34.50 |
0.33 |
| 34.51 to 35.50 |
0.34 |
| 35.51 to 36.50 |
0.35 |
| 36.51 to 37.50 |
0.36 |
| 37.51 to 38.70 |
0.37 |
| 38.71 to 40.00 |
0.38 |
| 40.01 to 41.20 |
0.39 |
| 41.21 to 42.50 |
0.4 |
| 42.51 to 43.70 |
0.41 |
| 43.71 to 45.00 |
0.42 |
| 45.01 to 46.20 |
0.43 |
| 46.21 to 47.50 |
0.44 |
| 47.51 to 48.70 |
0.45 |
| 48.71 to 50.00 |
0.46 |
| 50.01 to 51.50 |
0.47 |
| 51.51 to 53.00 |
0.48 |
| 53.01 to 54.50 |
0.5 |
| 54.51 to 56.00 |
0.51 |
| 56.01 to 58.00 |
0.52 |
| 58.01 to 60.00 |
0.54 |
| 60.01 to 61.50 |
0.55 |
| 61.51 to 63.00 |
0.56 |
| 63.01 to 65.00 |
0.58 |
| 65.01 to 67.00 |
0.59 |
| 67.01 to 69.00 |
0.61 |
| 69.01 to 71.00 |
0.63 |
| 71.01 to 73.00 |
0.64 |
| 73.01 to 75.00 |
0.66 |
| 75.01 to 77.50 |
0.67 |
| 77.51 to 80.00 |
0.69 |
| 80.01 to 82.50 |
0.71 |
| 82.51 to 85.00 |
0.73 |
| 85.01 to 87.50 |
0.75 |
| 87.51 to 90.00 |
0.77 |
| 90.01 to 92.50 |
0.79 |
| 92.51 to 95.00 |
0.81 |
| 95.01 to 97.50 |
0.83 |
| 97.51 to 100.00 |
0.84 |
| 100.01 to 103.00 |
0.87 |
| 103.01 to 106.00 |
0.89 |
| 106.01 to 109.00 |
0.91 |
| 109.01 to 112.00 |
0.93 |
| 112.01 to 115.00 |
0.95 |
| 115.01 to 118.00 |
0.97 |
| 118.01 to 122.00 |
1 |
| 122.01 to 125.00 |
1.03 |
| 125.01 to 128.00 |
1.05 |
| 128.01 to 132.00 |
1.08 |
| 132.01 to 136.00 |
1.1 |
| 136.01 to 140.00 |
1.13 |
| 140.01 to 145.00 |
1.17 |
| 145.01 to 150.00 |
1.2 |
| 150.01 to 155.00 |
1.24 |
| 155.01 to 160.00 |
1.27 |
| 160.01 to 165.00 |
1.31 |
| 165.01 to 170.00 |
1.34 |
| 170.01 to 175.00 |
1.38 |
| 175.01 to 180.00 |
1.41 |
| 180.01 to 185.00 |
1.44 |
| 185.01 to 190.00 |
1.48 |
| 190.01 to 195.00 |
1.51 |
| 195.01 to 200.00 |
1.55 |
| 200.01 to 206.00 |
1.59 |
| 206.01 to 212.00 |
1.63 |
| 212.01 to 218.00 |
1.67 |
| 218.01 to 224.00 |
1.71 |
| 224.01 to 230.00 |
1.75 |
| 230.01 to 236.00 |
1.79 |
| 236.01 to 243.00 |
1.83 |
| 243.01 to 250.00 |
1.88 |
| 250.01 to 258.00 |
1.93 |
| 258.01 to 265.00 |
1.98 |
| 265.01 to 272.00 |
2.02 |
| 272.01 to 280.00 |
2.08 |
| 280.01 to 290.00 |
2.14 |
| 290.01 to 300.00 |
2.21 |
| 300.01 to 307.00 |
2.25 |
| 307.01 to 315.00 |
2.3 |
| 315.01 to 325.00 |
2.37 |
| 325.01 to 335.00 |
2.43 |
| 335.01 to 345.00 |
2.49 |
| 345.01 to 355.00 |
2.56 |
| 355.01 to 365.00 |
2.62 |
| 365.01 to 375.00 |
2.68 |
| 375.01 to 387.00 |
2.76 |
| 387.01 to 400.00 |
2.84 |
| 400.01 to 412.00 |
2.91 |
| 412.01 to 425.00 |
2.99 |
| 425.01 to 437.00 |
3.07 |
| 437.01 to 450.00 |
3.15 |
| 450.01 to 462.00 |
3.22 |
| 462.01 to 475.00 |
3.3 |
| 475.01 to 487.00 |
3.37 |
| 487.01 to 500.00 |
3.45 |
| 500.01 to 515.00 |
3.54 |
| 515.01 to 530.00 |
3.63 |
| 530.01 to 545.00 |
3.72 |
| 545.01 to 560.00 |
3.81 |
| 560.01 to 580.00 |
3.93 |
| 580.01 to 600.00 |
4.05 |
| 600.01 to 615.00 |
4.13 |
| 615.01 to 630.00 |
4.22 |
| 630.01 to 650.00 |
4.34 |
| 650.01 to 670.00 |
4.46 |