Metric O-Ring Tolerances

metric o-ring tolerances

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 – 52.99 ± 0.55
63.0 – 64.99 ± 0.58
65.0 – 68.99 ± 0.58
I.D. (mm) Tolerance (mm)
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
I.D. (mm) Tolerance (mm)
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%