Permissible deviations
O-Ring seals in the thickness in according to the standard ISO 3601
For general industrial use
| thickness (mm) | 1.02 | 1.27 | 1.52 | 1.78 | 2.62 | 3.53 | 5.33 | 6.99 |
| permissible deviations+- | 0.08 | 0.08 | 0.08 | 0.08 | 0.09 | 0.10 | 0.13 | 0.15 |
O-Ring seals in internal diameter in according to the standard ISO 3601:2008
The following table provides an overview of dimensions and tolerances. To determine the tolerance levels based on ISO 3601: 2008 Class B, O-rings, with reference to general industrial applications can be precise tolerance is calculated by the following formula:
Displayed upper and lower tolerance in each case relates to the minimum and maximum values are shown under D1 in the column on the left side. An example of the use of the first two values d1=0.70 in 2.50:
| Internal diameter d1( mm) | Lower tolerance +/- | Upper tolerance +/- |
| 0.70 – 2.50 | 0.12 | 0.13 |
| 2.51 – 4.50 | 0.13 | 0.15 |
| 4.51 – 6.30 | 0.15 | 0.16 |
| 6.31 – 8.50 | 0.16 | 0.18 |
| 8.51 – 10.00 | 0.18 | 0.19 |
| 10.01 – 11.20 | 0.19 | 0.20 |
| 11.21 – 14.00 | 0.20 | 0.22 |
| 14.01 – 16.00 | 0.22 | 0.24 |
| 16.01 – 18.00 | 0.24 | 0.25 |
| 18.01 – 20.00 | 0.25 | 0.26 |
| 20.01 – 21.20 | 0.27 | 0.27 |
| 21.21 – 23.60 | 0.27 | 0.29 |
| 23.61 – 25.00 | 0.29 | 0.30 |
| 25.01 – 26.50 | 0.30 | 0.31 |
| 26.51 – 28.00 | 0.31 | 0.32 |
| 28.01 – 30.00 | 0.32 | 0.34 |
| 30.01 – 31.50 | 0.34 | 0.35 |
| 31.51 – 33.50 | 0.35 | 0.36 |
| 33.51 – 34.50 | 0.36 | 0.37 |
| 34.51 – 35.50 | 0.37 | 0.38 |
| 35.51 – 36.50 | 0.38 | 0.38 |
| 36.51 – 37.50 | 0.38 | 0.39 |
| 37.51 – 38.70 | 0.39 | 0.40 |
| 38.71 – 40.00 | 0.40 | 0.41 |
| 40.01 – 41.20 | 0.41 | 0.42 |
| 41.21 – 42.50 | 0.42 | 0.43 |
| 42.51 – 43.70 | 0.43 | 0.44 |
| 43.71 – 45.00 | 0.44 | 0.44 |
| 45.01 – 46.20 | 0.44 | 0.45 |
| 46.21 – 47.50 | 0.45 | 0.46 |
| 47.51 – 48.70 | 0.46 | 0.47 |
| 48.71 – 50.00 | 0.47 | 0.48 |
| 50.01 – 51.50 | 0.48 | 0.49 |
| 51.51 – 53.00 | 0.49 | 0.50 |
| 53.01 – 54.50 | 0.50 | 0.51 |
| 54.51 – 56.00 | 0.51 | 0.52 |
| 56.01 – 58.00 | 0.52 | 0.54 |
| 58.01 – 60.00 | 0.54 | 0.55 |
| 60.01 – 61.50 | 0.55 | 0.56 |
| 61.51 – 63.00 | 0.56 | 0.57 |
| 63.01 – 65.00 | 0.57 | 0.58 |
| 65.01 – 67.00 | 0.58 | 0.60 |
| 67.01 – 67.00 | 0.60 | 0.61 |
| 67.01 – 69.00 | 0.61 | 0.63 |
| 69.01 – 71.00 | 0.63 | 0.64 |
| 71.01 – 73.00 | 0.63 | 0.64 |
| 73.01 – 75.00 | 0.64 | 0.65 |
| 75.01 – 77.50 | 0.65 | 0.67 |
| 77.51 – 80.00 | 0.67 | 0.69 |
| 80.01 – 82.50 | 0.69 | 0.71 |
| 82.51 – 85.00 | 0.71 | 0.72 |
| 85.01 – 87.50 | 0.72 | 0.74 |
| 87.51 – 90.00 | 0.74 | 0.76 |
| 90.01 – 92.50 | 0.76 | 0.77 |
| 92.51 – 95.00 | 0.77 | 0.79 |
| 95.01 – 97.50 | 0.79 | 0.81 |
| 97.51 – 100.00 | 0.81 | 0.82 |
| 100.01 – 103.00 | 0.82 | 0.85 |
| 103.01 – 106.00 | 0.85 | 0.87 |
| 106.01 – 109.00 | 0.87 | 0.89 |
| 109.01 – 112.00 | 0.89 | 0.91 |
| 112.01 – 115.00 | 0.91 | 0.93 |
| 115.01 – 118.00 | 0.93 | 0.95 |
| 118.01 – 122.00 | 0.95 | 0.97 |
| 122.01 – 125.00 | 0.97 | 0.99 |
| 125.01 – 128.00 | 0.99 | 1.01 |
| 128.01 – 132.00 | 1.01 | 1.04 |
| 132.01 – 136.00 | 1.04 | 1.07 |
| 136.01 – 140.00 | 1.07 | 1.09 |
| 140.01 – 145.00 | 1.09 | 1.13 |
| 145.01 – 150.00 | 1.13 | 1.16 |
| 150.01 – 155.00 | 1.16 | 1.19 |
| 155.01 -160.00 | 1.19 | 1.23 |
| 160.01 -165.00 | 1.23 | 1.26 |
| 165.01 – 170.00 | 1.26 | 1.29 |
| 170.01 – 175.00 | 1.29 | 1.33 |
| 175.01 – 180.00 | 1.33 | 1.36 |
| 180.01 – 185.00 | 1.36 | 1.39 |
| 185.01 – 190.00 | 1.39 | 1.43 |
| 190.01 – 195.00 | 1.43 | 1.46 |
| 195.01 – 200.00 | 1.46 | 1.49 |
| 200.01 – 206.00 | 1.49 | 1.53 |
| 206.01 – 212.00 | 1.53 | 1.57 |
| 212.01 – 218.00 | 1.57 | 1.61 |
| 218.01 – 224.00 | 1.61 | 1.65 |
| 224.01 – 230.00 | 1.65 | 1.69 |
| 230.01 – 236.00 | 1.69 | 1.73 |
| 236.01 – 243.00 | 1.73 | 1.77 |
| 243.01 – 250.00 | 1.77 | 1.82 |
| 250.01 -258.00 | 1.82 | 1.87 |
| 258.01 -265.00 | 1.87 | 1.91 |
| 265.01 – 272.00 | 1.91 | 1.96 |
| 272.01 – 280.00 | 1.96 | 2.01 |
| 280.01 – 290.00 | 2.01 | 2.08 |
| 290.01 – 300.00 | 2.08 | 2.14 |
| 300.01 – 307.00 | 2.14 | 2.19 |
| 307.01 – 315.00 | 2.19 | 2.24 |
| 315.01 – 325.00 | 2.24 | 2.30 |
| 325.01 – 335.00 | 2.30 | 2.36 |
| 335.01 – 345.00 | 2.36 | 2.43 |
| 345.01 – 355.00 | 2.43 | 2.49 |
| 355.01 – 365.00 | 2.49 | 2.56 |
| 365.01 – 375.00 | 2.56 | 2.62 |
| 375.01 – 387.00 | 2.62 | 2.70 |
| 387.01 – 400.00 | 2.70 | 2.78 |
| 400.01 – 412.00 | 2.78 | 2.85 |
| 412.01 – 425.00 | 2.85 | 2.94 |
| 425.01 – 437.00 | 2.94 | 3.01 |
| 437.01 – 450.00 | 3.01 | 3.09 |
| 450.01 – 462.00 | 3.09 | 3.17 |
| 462.01 – 475.00 | 3.17 | 3.25 |
| 475.01 – 487.00 | 3.25 | 3.33 |
| 487.01 – 500.00 | 3.33 | 3.41 |
| 500.01 – 515.00 | 3.41 | 3.50 |
| 515.01 – 530.00 | 3.50 | 3.60 |
| 530.01 – 545.00 | 3.60 | 3.69 |
| 545.01 – 560.00 | 3.69 | 3.78 |
| 560.01 – 580.00 | 3.78 | 3.91 |
| 580.01 – 600.00 | 3.91 | 4.03 |
| 600.01 – 615.00 | 4.03 | 4.12 |
| 615.01 – 630.00 | 4.12 | 4.22 |
| 630.01 – 650.00 | 4.22 | 4.34 |
| 650.01 – 670.00 | 4.34 | 4.47 |
| 671.00 – 699.00 | 4.47 | 4.65 |
| 700.00 – 749.00 | 4.65 | 4.96 |
| 750.00 – 799.00 | 4.96 | 5.26 |