The following table displays the required O Ring sizes for use with SAE 4 bolt flanges.
| Part No. | SAE Flange Size | ID (Nominal) | ID (Actual) | OD (Nominal) | OD (Actual) | Section (Nominal) | Section (Actual) |
| N9-210 | 1/2 | 0.500 | 0.734 | 1.000 | 1.012 | 1/8 | 0.139 |
| N9-214 | 3/4 | 1.000 | 0.984 | 1.250 | 0.262 | 1/8 | 0.139 |
| N9-219 | 1 | 1.313 | 1.296 | 1.563 | 1.574 | 1/8 | 0.139 |
| N9-222 | 1.25 | 1.500 | 1.484 | 1.750 | 1.762 | 1/8 | 0.139 |
| N9-225 | 1.5 | 1.875 | 1.859 | 2.125 | 1.137 | 1/8 | 0.139 |
| N9-228 | 2 | 2.250 | 2.234 | 2.500 | 2.512 | 1/8 | 0.139 |
| N9-232 | 2.5 | 2.750 | 2.734 | 3.000 | 3.012 | 1/8 | 0.139 |
| N9-237 | 3 | 3.375 | 3.359 | 3.625 | 3.637 | 1/8 | 0.139 |
| N9-241 | 3.5 | 3.875 | 3.859 | 4.125 | 4.137 | 1/8 | 0.139 |
| N9-245 | 4 | 4.375 | 4.359 | 4.625 | 4.637 | 1/8 | 0.139 |
| N9-253 | 5 | 5.375 | 5.359 | 5.625 | 5.637 | 1/8 | 0.139 |
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