Metric O-Ring Tolerances

/Metric O-Ring Tolerances
Metric O-Ring Tolerances 2019-06-04T09:03:56+00:00

Metric O-Ring Tolerances Calculator

To use this tool, simply enter 2 known dimensions (CS, ID, or OD). The other dimension will calculate and the associated tolerances will be shown below. Then, click the Global Size to find possible matching items in our store.

NOTE: you can select your tolerance range (+/- %) in the store. Our tolerances are only meant to serve as a guide. You should always select a size that you feel comfortable will work for your application.

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

Dimensional tolerances for O-Rings

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 – 52.99 ± 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
238 – 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%