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Metric O-ring tolerances
Metric O-ring tolerance calculator
The steps to use this tool are as follows:
- Enter any two known dimensions (center distance, inner diameter, or outer diameter);
- The system will automatically calculate the third dimension and display the corresponding tolerance;
- Click the “KODA Dimension” button to quickly search for matching O-ring products.
All KODA metric O-rings are manufactured in strict accordance with the ISO 3601-1B standard.
Dimensional tolerances of metric O-rings
| Cross Section (mm) | Tolerance (mm) |
|---|---|
| ≤ 2.62 | ± 0.08 |
| 2.63 – 3.00 | ± 0.09 |
| 3.01 – 4.50 | ± 0.10 |
| 4.51 – 5.50 | ± 0.13 |
| 5.51 – 7.50 | ± 0.15 |
| 7.51 – 8.50 | ± 0.18 |
| 8.51 – 10.0 | ± 0.20 |
| I.D. (mm) | Tolerance (mm) |
|---|---|
| 1.80 – 2.79 | ± 0.13 |
| 2.80 – 4.86 | ± 0.14 |
| 4.87 – 6.69 | ± 0.15 |
| 6.70 – 8.75 | ± 0.16 |
| 8.76 – 10.59 | ± 0.17 |
| 10.5 – 11.79 | ± 0.18 |
| 11.8 – 14.99 | ± 0.19 |
| 15.0 – 16.99 | ± 0.20 |
| 17.0 – 18.99 | ± 0.21 |
| 19.0 – 21.19 | ± 0.22 |
| 21.2 – 22.39 | ± 0.23 |
| 22.4 – 24.99 | ± 0.24 |
| 25.0 – 25.79 | ± 0.25 |
| 25.8 – 27.99 | ± 0.26 |
| 28.0 – 29.99 | ± 0.28 |
| 30.0 – 31.49 | ± 0.29 |
| 31.5 – 32.49 | ± 0.31 |
| 32.5 – 34.49 | ± 0.32 |
| 34.5 – 35.49 | ± 0.33 |
| 35.5 – 36.49 | ± 0.34 |
| 36.5 – 37.49 | ± 0.35 |
| 37.5 – 38.59 | ± 0.36 |
| 38.7 – 39.99 | ± 0.37 |
| 40.0 – 41.19 | ± 0.38 |
| 41.2 – 42.49 | ± 0.39 |
| 42.5 – 43.69 | ± 0.40 |
| 43.7 – 44.99 | ± 0.41 |
| 45.0 – 46.19 | ± 0.42 |
| 46.2 – 47.49 | ± 0.43 |
| 47.5 – 48.69 | ± 0.44 |
| 48.7 – 49.99 | ± 0.45 |
| 50.0 – 51.49 | ± 0.46 |
| 51.5 – 52.99 | ± 0.47 |
| 53.0 – 54.49 | ± 0.48 |
| 54.5 – 55.99 | ± 0.50 |
| 56.0 – 57.99 | ± 0.51 |
| 58.0 – 59.99 | ± 0.52 |
| 60.0 – 61.49 | ± 0.54 |
| 61.5 – 62.99 | ± 0.55 |
| 63.0 – 64.99 | ± 0.58 |
| 65.0 – 68.99 | ± 0.58 |
| 67.0 – 68.99 | ± 0.59 |
| 69.0 – 70.99 | ± 0.61 |
| 71.0 – 72.99 | ± 0.63 |
| 73.0 – 74.99 | ± 0.64 |
| 75.0 – 77.49 | ± 0.66 |
| 77.5 – 79.99 | ± 0.67 |
| 80.0 – 82.49 | ± 0.69 |
| 82.5 – 84.99 | ± 0.71 |
| 85.0 – 87.49 | ± 0.73 |
| 87.5 – 89.99 | ± 0.75 |
| 90.0 – 92.49 | ± 0.77 |
| 92.5 – 94.99 | ± 0.79 |
| 95.0 – 97.49 | ± 0.81 |
| 97.5 – 99.99 | ± 0.83 |
| 100 – 102.9 | ± 0.84 |
| 103 – 105.9 | ± 0.87 |
| 106 – 108.9 | ± 0.89 |
| 109 – 111.9 | ± 0.91 |
| 112 – 114.9 | ± 0.93 |
| 115 – 117.9 | ± 0.95 |
| 118 – 121.9 | ± 0.97 |
| 122 – 124.9 | ± 1.00 |
| 125 – 127.9 | ± 1.03 |
| 128 – 131.9 | ± 1.05 |
| 132 – 135.9 | ± 1.08 |
| 136 – 139.9 | ± 1.10 |
| 140 – 144.9 | ± 1.13 |
| 145 – 149.9 | ± 1.17 |
| 150 – 154.9 | ± 1.20 |
| 155 – 159.9 | ± 1.24 |
| 160 – 164.9 | ± 1.27 |
| 165 – 169.9 | ± 1.31 |
| 170 – 174.9 | ± 1.34 |
| 175 – 179.9 | ± 1.38 |
| 180 – 184.9 | ± 1.41 |
| 185 – 189.9 | ± 1.44 |
| 190 – 194.9 | ± 1.48 |
| 195 – 199.9 | ± 1.51 |
| 200 – 205.9 | ± 1.55 |
| 206 – 211.9 | ± 1.59 |
| 212 – 217.9 | ± 1.63 |
| 218 – 223.9 | ± 1.67 |
| 224 – 229.9 | ± 1.71 |
| 230 – 235.9 | ± 1.75 |
| 236 – 242.9 | ± 1.79 |
| 243 – 249.9 | ± 1.83 |
| 250 – 257.9 | ± 1.88 |
| 258 – 264.9 | ± 1.93 |
| 265 – 271.9 | ± 1.98 |
| 272 – 279.9 | ± 2.02 |
| 280 – 289.9 | ± 2.08 |
| 290 – 299.9 | ± 2.14 |
| 300 – 306.9 | ± 2.21 |
| 307 – 314.9 | ± 2.25 |
| 315 – 324.9 | ± 2.30 |
| 325 – 334.9 | ± 2.37 |
| 335 – 344.9 | ± 2.43 |
| 345 – 354.9 | ± 2.49 |
| 355 – 364.9 | ± 2.56 |
| 365 – 374.9 | ± 2.62 |
| 375 – 386.9 | ± 2.68 |
| 387 – 399.9 | ± 2.78 |
| 400 – 411.9 | ± 2.84 |
| 412 – 424.9 | ± 2.91 |
| 425 – 436.9 | ± 2.99 |
| 437 – 449.9 | ± 3.07 |
| 450 – 461.9 | ± 3.15 |
| 462 – 474.9 | ± 3.22 |
| 475 – 486.9 | ± 3.30 |
| 487 – 499.9 | ± 3.37 |
| 500 – 514.9 | ± 3.45 |
| 515 – 529.9 | ± 3.54 |
| 530 – 544.9 | ± 3.63 |
| 545 – 559.9 | ± 3.72 |
| 560 – 579.9 | ± 3.81 |
| 580 – 599.9 | ± 3.93 |
| 600 – 614.9 | ± 4.05 |
| 615 – 629.9 | ± 4.13 |
| 630 – 649.9 | ± 4.22 |
| 650 – 669.9 | ± 4.34 |
| 670 – 689.9 | ± 4.46 |
| ≥ 690 | ± 0.65% |