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DIN 3771 O-Ring Sizes

The German Institute for Standardisation DIN 3771 is a Metric standard that defines o-ring dimensions by internal diameter and cross section.

DIN3771 SizeID (mm)ID Tol' (+/- mm)CS (mm)CS Tol' (mm)ID (inch)ID Tol' (+/- inch)CS (inch)CS Tol' (inch)
DIN3771 1.8x1.8 1.8 0.13 1.8 0.08 0.071 0.005 0.071 0.003
DIN3771 2x1.8 2 0.079
DIN3771 2.24x1.8 2.24 0.088
DIN3771 2.5x1.8 2.5 0.098
DIN3771 2.8x1.8 2.8 0.14 0.110 0.006
DIN3771 3.15x1.8 3.15 0.124
DIN3771 3.55x1.8 3.55 0.140
DIN3771 4x1.8 4 0.157
DIN3771 4.5x1.8 4.5 0.177
DIN3771 4.75x1.8 4.75 0.15 0.187
DIN3771 4.87x1.8 4.87 0.192
DIN3771 5x1.8 5 0.197
DIN3771 5.15x1.8 5.15 0.203
DIN3771 5.3x1.8 5.3 0.209
DIN3771 5.6x1.8 5.6 0.220
DIN3771 6x1.8 6 0.236
DIN3771 6.3x1.8 6.3 0.248
DIN3771 6.7x1.8 6.7 0.16 0.264
DIN3771 6.9x1.8 6.9 0.272
DIN3771 7.1x1.8 7.1 0.280
DIN3771 7.5x1.8 7.5 0.295
DIN3771 8x1.8 8 0.315
DIN3771 8.5x1.8 8.5 0.335
DIN3771 8.75x1.8 8.75 0.17 0.344 0.007
DIN3771 9x1.8 9 0.354
DIN3771 9.5x1.8 9.5 0.374
DIN3771 9.75x1.8 9.75 0.384
DIN3771 10x1.8 10 0.394
DIN3771 10.6x1.8 10.6 0.18 0.417
DIN3771 11.2x1.8 11.2 0.441
DIN3771 11.6x1.8 11.6 0.19 0.457
DIN3771 11.8x1.8 11.8 0.465
DIN3771 12.1x1.8 12.1 0.476
DIN3771 12.5x1.8 12.5 0.492
DIN3771 12.8x1.8 12.8 0.504
DIN3771 13.2x1.8 13.2 0.520
DIN3771 14x1.8 14 0.551
DIN3771 15x1.8 15 0.2 0.591 0.008
DIN3771 16x1.8 16 0.630
DIN3771 17x1.8 17 0.21 0.669
DIN3771 14x2.65 14 0.19 2.65 0.09 0.551 0.007 0.104 0.004
DIN3771 14.5x2.65 14.5 0.2 0.571 0.008
DIN3771 15x2.65 15 0.591
DIN3771 15.5x2.65 15.5 0.610
DIN3771 16x2.65 16 0.630
DIN3771 17x2.65 17 0.21 0.669
DIN3771 18x2.65 18 0.709
DIN3771 19x2.65 19 0.22 0.748 0.009
DIN3771 20x2.65 20 0.787
DIN3771 20.6x2.65 20.6 0.811
DIN3771 21.2x2.65 21.2 0.23 0.835
DIN3771 22.4x2.65 22.4 0.24 0.882
DIN3771 23.6x2.65 23.6 0.929
DIN3771 24.3x2.65 24.3 0.25 0.957 0.010
DIN3771 25x2.65 25 0.984
DIN3771 25.8x2.65 25.8 0.26 1.016
DIN3771 26.5x2.65 26.5 1.043
DIN3771 27.3x2.65 27.3 0.27 1.075 0.011
DIN3771 28x2.65 28 0.28 1.102
DIN3771 30x2.65 30 0.29 1.181
DIN3771 31.5x2.65 31.5 0.31 1.240 0.012
DIN3771 32.5x2.65 32.5 0.32 1.280 0.013
DIN3771 33.5x2.65 33.5 1.319
DIN3771 34.5x2.65 34.5 0.33 1.358
DIN3771 35.5x2.65 35.5 0.34 1.398
DIN3771 36.5x2.65 36.5 0.35 1.437 0.014
DIN3771 37.5x2.65 37.5 0.36 1.476
DIN3771 38.7x2.65 38.7 0.37 1.524 0.015
DIN3771 18x3.55 18 0.21 3.55 0.1 0.709 0.008 0.140 0.004
DIN3771 19x3.55 19 0.22 0.748 0.009
DIN3771 20x3.55 20 0.787
DIN3771 20.6x3.55 20.6 0.811
DIN3771 21.2x3.55 21.2 0.23 0.835
DIN3771 22.4x3.55 22.4 0.24 0.882
DIN3771 23.6x3.55 23.6 0.929
DIN3771 24.3x3.55 24.3 0.25 0.957 0.010
DIN3771 25x3.55 25 0.984
DIN3771 25.8x3.55 25.8 0.26 1.016
DIN3771 26.5x3.55 26.5 1.043
DIN3771 27.3x3.55 27.3 0.27 1.075 0.011
DIN3771 28x3.55 28 0.28 1.102
DIN3771 30x3.55 30 0.29 1.181
DIN3771 31.5x3.55 31.5 0.31 1.240 0.012
DIN3771 32.5x3.55 32.5 0.32 1.280 0.013
DIN3771 33.5x3.55 33.5 1.319
DIN3771 34.5x3.55 34.5 0.33 1.358
DIN3771 35.5x3.55 35.5 0.34 1.398
DIN3771 36.5x3.55 36.5 0.35 1.437 0.014
DIN3771 37.5x3.55 37.5 0.36 1.476
DIN3771 38.7x3.55 38.7 0.37 1.524 0.015
DIN3771 40x3.55 40 0.38 1.575
DIN3771 41.2x3.55 41.2 0.39 1.622
DIN3771 42.5x3.55 42.5 0.4 1.673 0.016
DIN3771 43.7x3.55 43.7 0.41 1.720
DIN3771 45x3.55 45 0.42 1.772 0.017
DIN3771 46.2x3.55 46.2 0.43 1.819
DIN3771 47.5x3.55 47.5 0.44 1.870
DIN3771 48.7x3.55 48.7 0.45 1.917 0.018
DIN3771 50x3.55 50 0.46 1.969
DIN3771 51.5x3.55 51.5 0.47 2.028 0.019
DIN3771 53x3.55 53 0.48 2.087
DIN3771 54.5x3.55 54.5 0.49 2.146
DIN3771 56x3.55 56 0.51 2.205 0.020
DIN3771 58x3.55 58 0.52 2.283
DIN3771 60x3.55 60 0.54 2.362 0.021
DIN3771 61.5x3.55 61.5 0.55 2.421 0.022
DIN3771 63x3.55 63 0.56 2.480
DIN3771 65x3.55 65 0.58 2.559 0.023
DIN3771 67x3.55 67 0.59 2.638
DIN3771 69x3.55 69 0.61 2.717 0.024
DIN3771 71x3.55 71 0.63 2.795 0.025
DIN3771 73x3.55 73 0.64 2.874
DIN3771 75x3.55 75 0.66 2.953 0.026
DIN3771 77.5x3.55 77.5 0.67 3.051
DIN3771 80x3.55 80 0.69 3.150 0.027
DIN3771 82.5x3.55 82.5 0.71 3.248 0.028
DIN3771 85x3.55 85 0.73 3.346 0.029
DIN3771 87.5x3.55 87.5 0.75 3.445 0.030
DIN3771 90x3.55 90 0.77 3.543
DIN3771 92.5x3.55 92.5 0.79 3.642 0.031
DIN3771 95x3.55 95 0.81 3.740 0.032
DIN3771 97.5x3.55 97.5 0.83 3.839 0.033
DIN3771 100x3.55 100 0.84 3.937
DIN3771 103x3.55 103 0.87 4.055 0.034
DIN3771 106x3.55 106 0.89 4.173 0.035
DIN3771 109x3.55 109 0.91 4.291 0.036
DIN3771 112x3.55 112 0.93 4.409 0.037
DIN3771 115x3.55 115 0.95 4.528
DIN3771 118x3.55 118 0.97 4.646 0.038
DIN3771 122x3.55 122 1 4.803 0.039
DIN3771 125x3.55 125 1.03 4.921 0.041
DIN3771 128x3.55 128 1.05 5.039
DIN3771 132x3.55 132 1.08 5.197 0.043
DIN3771 136x3.55 136 1.1 5.354
DIN3771 140x3.55 140 1.13 5.512 0.044
DIN3771 145x3.55 145 1.17 5.709 0.046
DIN3771 147.5x3.55 147.5 1.19 5.807 0.047
DIN3771 150x3.55 150 1.2 5.906
DIN3771 152.5x3.55 152.5 1.22 6.004 0.048
DIN3771 155x3.55 155 1.24 6.102 0.049
DIN3771 157.5x3.55 157.5 1.26 6.201 0.050
DIN3771 160x3.55 160 1.27 6.299
DIN3771 162.5x3.55 162.5 1.29 6.398 0.051
DIN3771 165x3.55 165 1.31 6.496 0.052
DIN3771 167.5x3.55 167.5 1.33 6.594
DIN3771 170x3.55 170 1.34 6.693 0.053
DIN3771 172.5x3.55 172.5 1.36 6.791 0.054
DIN3771 175x3.55 175 1.38 6.890
DIN3771 177.5x3.55 177.5 1.4 6.988 0.055
DIN3771 180x3.55 180 1.41 7.087 0.056
DIN3771 182.5x3.55 182.5 1.43 7.185
DIN3771 185x3.55 185 1.44 7.283 0.057
DIN3771 187.5x3.55 187.5 1.46 7.382
DIN3771 190x3.55 190 1.48 7.480 0.058
DIN3771 195x3.55 195 1.51 7.677 0.059
DIN3771 200x3.55 200 1.55 7.874 0.061
DIN3771 40x5.3 40 0.38 5.3 0.13 1.575 0.015 0.209 0.005
DIN3771 41.2x5.3 41.2 0.39 1.622
DIN3771 42.5x5.3 42.5 0.4 1.673 0.016
DIN3771 43.7x5.3 43.7 0.41 1.720
DIN3771 45x5.3 45 0.42 1.772 0.017
DIN3771 46.2x5.3 46.2 0.43 1.819
DIN3771 47.5x5.3 47.5 0.44 1.870
DIN3771 48.7x5.3 48.7 0.45 1.917 0.018
DIN3771 50x5.3 50 0.46 1.969
DIN3771 51.5x5.3 51.5 0.47 2.028 0.019
DIN3771 53x5.3 53 0.48 2.087
DIN3771 54.5x5.3 54.5 0.49 2.146
DIN3771 56x5.3 56 0.51 2.205 0.020
DIN3771 58x5.3 58 0.52 2.283
DIN3771 60x5.3 60 0.54 2.362 0.021
DIN3771 61.5x5.3 61.5 0.55 2.421 0.022
DIN3771 63x5.3 63 0.56 2.480
DIN3771 65x5.3 65 0.58 2.559 0.023
DIN3771 67x5.3 67 0.59 2.638
DIN3771 69x5.3 69 0.61 2.717 0.024
DIN3771 71x5.3 71 0.63 2.795 0.025
DIN3771 73x5.3 73 0.64 2.874
DIN3771 75x5.3 75 0.66 2.953 0.026
DIN3771 77.5x5.3 77.5 0.67 3.051
DIN3771 80x5.3 80 0.69 3.150 0.027
DIN3771 82.5x5.3 82.5 0.71 3.248 0.028
DIN3771 85x5.3 85 0.73 3.346 0.029
DIN3771 87.5x5.3 87.5 0.75 3.445 0.030
DIN3771 90x5.3 90 0.77 3.543
DIN3771 92.5x5.3 92.5 0.79 3.642 0.031
DIN3771 95x5.3 95 0.81 3.740 0.032
DIN3771 97.5x5.3 97.5 0.83 3.839 0.033
DIN3771 100x5.3 100 0.84 3.937
DIN3771 103x5.3 103 0.87 4.055 0.034
DIN3771 106x5.3 106 0.89 4.173 0.035
DIN3771 109x5.3 109 0.91 4.291 0.036
DIN3771 112x5.3 112 0.93 4.409 0.037
DIN3771 115x5.3 115 0.95 4.528
DIN3771 118x5.3 118 0.97 4.646 0.038
DIN3771 122x5.3 122 1 4.803 0.039
DIN3771 125x5.3 125 1.03 4.921 0.041
DIN3771 128x5.3 128 1.05 5.039
DIN3771 132x5.3 132 1.08 5.197 0.043
DIN3771 136x5.3 136 1.1 5.354
DIN3771 140x5.3 140 1.13 5.512 0.044
DIN3771 145x5.3 145 1.17 5.709 0.046
DIN3771 147.5x5.3 147.5 1.19 5.807 0.047
DIN3771 150x5.3 150 1.2 5.906
DIN3771 155x5.3 155 1.24 6.102 0.049
DIN3771 157.5x5.3 157.5 1.26 6.201 0.050
DIN3771 160x5.3 160 1.27 6.299
DIN3771 165x5.3 165 1.31 6.496 0.052
DIN3771 170x5.3 170 1.34 6.693 0.053
DIN3771 175x5.3 175 1.38 6.890 0.054
DIN3771 180x5.3 180 1.41 7.087 0.056
DIN3771 182.5x5.3 182.5 1.43 7.185
DIN3771 185x5.3 185 1.44 7.283 0.057
DIN3771 187.5x5.3 187.5 1.46 7.382
DIN3771 190x5.3 190 1.48 7.480 0.058
DIN3771 195x5.3 195 1.51 7.677 0.059
DIN3771 200x5.3 200 1.55 7.874 0.061
DIN3771 206x5.3 206 1.59 8.110 0.063
DIN3771 212x5.3 212 1.63 8.346 0.064
DIN3771 218x5.3 218 1.67 8.583 0.066
DIN3771 224x5.3 224 1.71 8.819 0.067
DIN3771 227x5.3 227 1.73 8.937 0.068
DIN3771 230x5.3 230 1.75 9.055 0.069
DIN3771 236x5.3 236 1.79 9.291 0.070
DIN3771 239x5.3 239 1.81 9.409 0.071
DIN3771 243x5.3 243 1.83 9.567 0.072
DIN3771 250x5.3 250 1.88 9.843 0.074
DIN3771 254x5.3 254 1.91 10.000 0.075
DIN3771 258x5.3 258 1.93 10.157 0.076
DIN3771 261x5.3 261 1.96 10.276 0.077
DIN3771 265x5.3 265 1.98 10.433 0.078
DIN3771 268x5.3 268 2 10.551 0.079
DIN3771 272x5.3 272 2.02 10.709 0.080
DIN3771 276x5.3 276 2.5 10.866 0.098
DIN3771 280x5.3 280 2.08 11.024 0.082
DIN3771 283x5.3 283 2.1 11.142 0.083
DIN3771 286x5.3 286 2.12 11.260
DIN3771 290x5.3 290 2.14 11.417 0.084
DIN3771 295x5.3 295 2.18 11.614 0.086
DIN3771 300x5.3 300 2.21 11.811 0.087
DIN3771 303x5.3 303 2.23 11.929 0.088
DIN3771 307x5.3 307 2.25 12.087 0.089
DIN3771 311x5.3 311 2.28 12.244 0.090
DIN3771 315x5.3 315 2.3 12.402 0.091
DIN3771 320x5.3 320 2.34 12.598 0.092
DIN3771 325x5.3 325 2.37 12.795 0.093
DIN3771 330x5.3 330 2.4 12.992 0.094
DIN3771 335x5.3 335 2.43 13.189 0.096
DIN3771 340x5.3 340 2.46 13.386 0.097
DIN3771 345x5.3 345 2.49 13.583 0.098
DIN3771 350x5.3 350 2.53 13.780 0.100
DIN3771 355x5.3 355 2.56 13.976 0.101
DIN3771 360x5.3 360 2.59 14.173 0.102
DIN3771 365x5.3 365 2.62 14.370 0.103
DIN3771 370x5.3 370 2.65 14.567 0.104
DIN3771 375x5.3 375 2.68 14.764 0.106
DIN3771 379x5.3 379 2.71 14.921 0.107
DIN3771 383x5.3 383 2.73 15.079
DIN3771 387x5.3 387 2.76 15.236 0.109
DIN3771 391x5.3 391 2.78 15.394
DIN3771 395x5.3 395 2.81 15.551 0.111
DIN3771 400x5.3 400 2.84 15.748 0.112
DIN3771 109x7 109 0.91 7 0.15 4.291 0.036 0.276 0.006
DIN3771 112x7 112 0.93 4.409 0.037
DIN3771 115x7 115 0.95 4.528
DIN3771 118x7 118 0.97 4.646 0.038
DIN3771 122x7 122 1 4.803 0.039
DIN3771 125x7 125 1.03 4.921 0.041
DIN3771 128x7 128 1.05 5.039
DIN3771 132x7 132 1.08 5.197 0.043
DIN3771 136x7 136 1.1 5.354
DIN3771 140x7 140 1.13 5.512 0.044
DIN3771 142.5x7 142.5 1.15 5.610 0.045
DIN3771 145x7 145 1.17 5.709 0.046
DIN3771 147.5x7 147.5 1.19 5.807 0.047
DIN3771 150x7 150 1.2 5.906
DIN3771 152.5x7 152.5 1.22 6.004 0.048
DIN3771 155x7 155 1.24 6.102 0.049
DIN3771 157.5x7 157.5 1.26 6.201 0.050
DIN3771 160x7 160 1.27 6.299
DIN3771 162.5x7 162.5 1.29 6.398 0.051
DIN3771 165x7 165 1.31 6.496 0.052
DIN3771 167.5x7 167.5 1.33 6.594
DIN3771 170x7 170 1.34 6.693 0.053
DIN3771 172.5x7 172.5 1.36 6.791 0.054
DIN3771 175x7 175 1.38 6.890
DIN3771 177.5x7 177.5 1.4 6.988 0.055
DIN3771 180x7 180 1.41 7.087 0.056
DIN3771 185x7 185 1.44 7.283 0.057
DIN3771 190x7 190 1.48 7.480 0.058
DIN3771 195x7 195 1.51 7.677 0.059
DIN3771 200x7 200 1.55 7.874 0.061
DIN3771 203x7 203 1.57 7.992 0.062
DIN3771 206x7 206 1.59 8.110 0.063
DIN3771 212x7 212 1.63 8.346 0.064
DIN3771 218x7 218 1.67 8.583 0.066
DIN3771 224x7 224 1.71 8.819 0.067
DIN3771 230x7 230 1.75 9.055 0.069
DIN3771 236x7 236 1.79 9.291 0.070
DIN3771 243x7 243 1.83 9.567 0.072
DIN3771 250x7 250 1.88 9.843 0.074
DIN3771 254x7 254 1.91 10.000 0.075
DIN3771 258x7 258 1.93 10.157 0.076
DIN3771 261x7 261 1.96 10.276 0.077
DIN3771 265x7 265 1.98 10.433 0.078
DIN3771 268x7 268 2 10.551 0.079
DIN3771 272x7 272 2.02 10.709 0.080
DIN3771 276x7 276 2.5 10.866 0.098
DIN3771 280x7 280 2.08 11.024 0.082
DIN3771 283x7 283 2.1 11.142 0.083
DIN3771 286x7 286 2.12 11.260
DIN3771 290x7 290 2.14 11.417 0.084
DIN3771 295x7 295 2.18 11.614 0.086
DIN3771 300x7 300 2.21 11.811 0.087
DIN3771 303x7 303 2.23 11.929 0.088
DIN3771 307x7 307 2.25 12.087 0.089
DIN3771 311x7 311 2.28 12.244 0.090
DIN3771 315x7 315 2.3 12.402 0.091
DIN3771 320x7 320 2.34 12.598 0.092
DIN3771 325x7 325 2.37 12.795 0.093
DIN3771 330x7 330 2.4 12.992 0.094
DIN3771 335x7 335 2.43 13.189 0.096
DIN3771 340x7 340 2.46 13.386 0.097
DIN3771 345x7 345 2.49 13.583 0.098
DIN3771 350x7 350 2.53 13.780 0.100
DIN3771 355x7 355 2.56 13.976 0.101
DIN3771 360x7 360 2.59 14.173 0.102
DIN3771 365x7 365 2.62 14.370 0.103
DIN3771 370x7 370 2.65 14.567 0.104
DIN3771 375x7 375 2.68 14.764 0.106
DIN3771 379x7 379 2.71 14.921 0.107
DIN3771 383x7 383 2.73 15.079
DIN3771 387x7 387 2.76 15.236 0.109
DIN3771 391x7 391 2.78 15.394
DIN3771 395x7 395 2.81 15.551 0.111
DIN3771 400x7 400 2.84 15.748 0.112
DIN3771 406x7 406 2.87 15.984 0.113
DIN3771 412x7 412 2.91 16.220 0.115
DIN3771 418x7 418 2.95 16.457 0.116
DIN3771 425x7 425 2.99 16.732 0.118
DIN3771 429x7 429 3 16.890
DIN3771 433x7 433 3.04 17.047 0.120
DIN3771 437x7 437 3.07 17.205 0.121
DIN3771 443x7 443 3.11 17.441 0.122
DIN3771 450x7 450 3.15 17.717 0.124
DIN3771 456x7 456 3.18 17.953 0.125
DIN3771 462x7 462 3.22 18.189 0.127
DIN3771 466x7 466 3.24 18.346 0.128
DIN3771 470x7 470 3.27 18.504 0.129
DIN3771 475x7 475 3.3 18.701 0.130
DIN3771 479x7 479 3.32 18.858 0.131
DIN3771 483x7 483 3.34 19.016
DIN3771 487x7 487 3.37 19.173 0.133
DIN3771 493x7 493 3.41 19.409 0.134
DIN3771 500x7 500 3.45 19.685 0.136
DIN3771 508x7 508 3.5 20.000 0.138
DIN3771 515x7 515 3.54 20.276 0.139
DIN3771 523x7 523 3.59 20.591 0.141
DIN3771 530x7 530 3.63 20.866 0.143

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