| Flange Size | Working Pressure (psi) | Outside Diameter | Number of Bolt Holes | Diameter of Bolts | Length of Bolts | API Ring Gasket | | 1-13/16" | 10,000 | 7-3/8" | 8 | 3/4" | 5-1/4" | BX-151 |
| 15,000 | 8-3/16" | 8 | 7/8" | 6" | BX-151 |
| 20,000 | 10-1/8" | 8 | 1" | 7-3/4" | BX-151 | | 2-1/16" | 2,000 | 6-1/2" | 8 | 5/8" | 5/8" | R-23 |
| 3,000/5,000 | 8-1/2" | 8 | 7/8" | 7/8" | R-24 |
| 10,000 | 7-7/8" | 8 | 3/4" | 3/4" | BX-152 |
| 15,000 | 8-3/4" | 8 | 7/8" | 7/8" | BX-152 |
| 20,000 | 11-5/16" | 8 | 1-1/8" | 1-1/8" | BX-152 | | 2-9/16" | 2,000 | 7-1/2" | 8 | 3/4" | 5-1/4" | R-26 |
| 3,000/5,000 | 9-5/8" | 8 | 1" | 7" | R-27 |
| 10,000 | 9-1/8" | 8 | 7/8" | 6-1/4" | BX-153 |
| 15,000 | 10" | 8 | 1" | 7" | BX-153 |
| 20,000 | 12-13/16" | 8 | 1-1/4" | 9-1/2" | BX-153 | | 3-1/8" | 2,000 | 8-1/4" | 8 | 3/4" | 5-1/2" | R-31 |
| 3,000 | 9-1/2" | 8 | 7/8" | 6-1/4" | R-31 |
| 5,000 | 10-1/2" | 8 | 1-1/8" | 7-3/4" | R-35 | | 3-1/16" | 10,000 | 10-5/8" | 8 | 1" | 7-1/4" | BX-154 |
| 15,000 | 11-5/16" | 8 | 1-1/8" | 8" | BX-154 |
| 20,000 | 14-1/16" | 8 | 1-3/8" | 10-3/4" | BX-154 | | 4-1/16" | 2,000 | 10-3/4" | 8 | 7/8" | 6-1/4" | R-37 |
| 3,000 | 11-1/2" | 8 | 1-1/8" | 7-1/2" | R-37 |
| 5,000 | 12-1/4" | 8 | 1-1/4" | 8-1/2" | R-39 |
| 10,000 | 12-7/16" | 8 | 1-1/8" | 8-3/8" | BX-155 |
| 15,000 | 14-3/16" | 8 | 1-3/8" | 9-3/4" | BX-155 |
| 20,000 | 17-9/16" | 8 | 1-3/4" | 12-3/4" | BX-155 | | 5-1/8" | 5,000 | 14-3/4" | 8 | 1-1/2" | 10-3/4" | R-44 | | 7-1/16" | 2,000 | 14" | 12 | 1" | 7-1/2" | R-45 |
| 3,000 | 15" | 12 | 1-1/8" | 8-1/2" | R-45 |
| 5,000 | 15-1/2" | 12 | 1-3/8" | 11-1/4" | R-46 |
| 10,000 | 18-7/8" | 12 | 1-1/2" | 11-3/4" | BX-156 |
| 15,000 | 19-7/8" | 16 | 1-1/2" | 13" | BX-156 |
| 20,000 | 25-13/16" | 16 | 2" | 17-3/4" | BX-156 | | 9" | 2,000 | 16-1/2" | 12 | 1-1/8" | 8-1/2" | R-49 |
| 3,000 | 18-1/2" | 12 | 1-3/8" | 9-1/2" | R-49 |
| 5,000 | 19" | 12 | 1-5/8" | 12-1/2" | R-50 |
| 10,000 | 21-3/4" | 16 | 1-1/2" | 13-1/4" | BX-157 |
| 15,000 | 25-1/2" | 16 | 1-7/8" | 16" | BX-157 | | 11" | 2,000 | 20" | 16 | 1-1/4" | 9-1/4" | R-53 |
| 3,000 | 21-1/2" | 16 | 1-3/8" | 10" | R-53 |
| 5,000 | 23" | 12 | 1-7/8" | 14-1/4" | R-54 |
| 10,000 | 25-3/4" | 16 | 1-3/4" | 15-3/8" | BX-158 |
| 15,000 | 32" | 20 | 2" | 19-1/2" | BX-158 | | 13-5/8" | 2,000 | 22" | 20 | 1-1/4" | 9-1/2" | R-57 |
| 3,000 | 24" | 20 | 1-3/8" | 10-3/4" | R-57 |
| 5,000 | 26-1/2" | 16 | 1-5/8" | 12-3/4" | BX-160 |
| 10,000 | 30-1/4" | 20 | 1-7/8" | 17-3/4" | BX-159 |
| 15,000 | 34-7/8" | 20 | 2-1/4" | 21" | BX-159 | | 16-3/4" | 2,000 | 27" | 20 | 1-1/2" | 10-3/4" | R-65 |
| 3,000 | 27-3/4" | 20 | 1-5/8" | 12-1/4" | R-66 |
| 5,000 | 30-3/8" | 16 | 1-7/8" | 14-3/4" | BX-162 |
| 10,000 | 34-5/16" | 24 | 1-7/8" | 17-3/4" | BX-162 | | 18-3/4" | 5,000 | 35-5/8" | 20 | 2" | 18" | BX-163 |
| 10,000 | 40-15/16" | 24 | 2-1/4" | 23" | BX-164 | | 20-3/4" | 3,000 | 33-3/4" | 20 | 2" | 15-1/4" | R-74 | | 21-1/4" | 2,000 | 32" | 24 | 1-5/8" | 12-1/2" | R-73 |
| 5,000 | 39" | 24 | 2" | 19" | BX-165 |
| 10,000 | 45" | 24 | 2-1/2" | 24-3/4" | BX-166 | | 26-3/4" | 2,000 | 41" | 20" | 1-3/4" | 14-1/4" | BX-167 |
| 3,000 | 43-3/8" | 24" | 2" | 17-1/2" | BX-168 |
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