Gasket Dimensions for ASME B16.5 Class 150, Pipe Flanges and Flanged Fittings
Flat Ring Gasket Dimensions for ASME B16.1 Class 250, Cast Iron Pipe Flanges and Flanged Fittings
2019-08-29Flat Ring Gasket Dimensions for ASME B16.5, Pipe Flanges and Flanged Fittings, Classes 300, 400, 600, and 900
2019-08-29
FLAT RING GASKET 150# |
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| NOMINAL SIZE | ID inch | ID mm | OD inch | OD mm | NUMBER OF BOLT HOLES |
HOLE DIAMETER | BOLT CIRCLE | BOLT CIRCLE |
| 1/2″ | 27/32″ | 21 | 1-7/8″ | 48 | ||||
| 3/4″ | 1-1/16″ | 27 | 2-1/4″ | 57 | ||||
| 1″ | 1-5/16″ | 33 | 2-5/8″ | 67 | ||||
| 1-1/4″ | 1-21/32″ | 42 | 3″ | 76 | ||||
| 1-1/2″ | 1-29/32″ | 48 | 3-3/8″ | 86 | ||||
| 2″ | 2-3/8″ | 60 | 4-1/8″ | 105 | ||||
| 2-1/2″ | 2-7/8″ | 73 | 4-7/8″ | 124 | ||||
| 3″ | 3-1/2″ | 89 | 5-3/8″ | 137 | ||||
| 3-1/2″ | 4″ | 102 | 6-3/8″ | 162 | ||||
| 4″ | 4-1/2″ | 114 | 6-7/8″ | 175 | ||||
| 4-1/2″ | 5″ | 127 | 7″ | 178 | ||||
| 5″ | 5-9/16″ | 141 | 7-3/4″ | 197 | ||||
| 6″ | 6-5/8″ | 168 | 8-3/4″ | 222 | ||||
| 7″ | 7-5/8″ | 194 | 10″ | 254 | ||||
| 8″ | 8-5/8″ | 219 | 11″ | 279 | ||||
| 10″ | 10-3/4″ | 273 | 13-3/8″ | 340 | ||||
| 12″ | 12-3/4″ | 324 | 16-1/8″ | 410 | ||||
| 14″ | 14″ | 356 | 17-3/4″ | 451 | ||||
| 16″ | 16″ | 406 | 20-1/4″ | 514 | ||||
| 18″ | 18″ | 457 | 21-5/8″ | 549 | ||||
| 20″ | 20″ | 508 | 23-7/8″ | 606 | ||||
| 22″ | 22″ | 559 | 26″ | 660 | ||||
| 24″ | 24″ | 610 | 28-1/4″ | 718 | ||||
FULL FACE GASKET 150# |
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| NOMINAL SIZE | ID inch | ID mm | OD inch | OD mm | NUMBER OF BOLT HOLES |
HOLE DIAMETER | BOLT CIRCLE inch | BOLT CIRCLE mm |
| 1/2″ | 13/16″ | 21 | 3-1/2″ | 89 | 4 | 5/8″ | 2-3/8″ | 60.3 |
| 3/4″ | 1-1/16″ | 27 | 3-7/8″ | 98 | 4 | 5/8″ | 2-3/4″ | 69.9 |
| 1″ | 1-5/16″ | 33 | 4-1/4″ | 108 | 4 | 5/8″ | 3-1/8″ | 79.4 |
| 1-1/4″ | 1-5/8″ | 41 | 4-5/8″ | 117 | 4 | 5/8″ | 3-1/2″ | 88.9 |
| 1-1/2″ | 1-7/8″ | 48 | 5″ | 127 | 4 | 5/8″ | 3-7/8″ | 98.4 |
| 2″ | 2-3/8″ | 60 | 6″ | 152 | 4 | 3/4″ | 4-3/4″ | 120.7 |
| 2-1/2″ | 2-7/8″ | 73 | 7″ | 178 | 4 | 3/4″ | 5-1/2″ | 139.7 |
| 3″ | 3-1/2″ | 89 | 7-1/2″ | 191 | 4 | 3/4″ | 6″ | 152.4 |
| 3-1/2″ | 4″ | 102 | 8-1/2″ | 216 | 8 | 3/4″ | 7″ | 177.8 |
| 4″ | 4-1/2″ | 114 | 9″ | 229 | 8 | 3/4″ | 7-1/2″ | 190.5 |
| 4-1/2″ | 8 | |||||||
| 5″ | 5-9/16″ | 141 | 10″ | 254 | 8 | 7/8″ | 8-1/2″ | 215.9 |
| 6″ | 6-5/8″ | 168 | 11″ | 279 | 8 | 7/8″ | 9-1/2″ | 241.3 |
| 8″ | 8-5/8″ | 219 | 13-1/2″ | 343 | 8 | 7/8″ | 11-3/4″ | 298.5 |
| 10″ | 10-3/4″ | 273 | 16″ | 406 | 12 | 1″ | 14-1/4″ | 362 |
| 12″ | 13-3/4″ | 324 | 19″ | 483 | 12 | 1″ | 17″ | 431.8 |
| 14″ | 14″ | 356 | 21″ | 533 | 12 | 1-1/8″ | 18-3/4″ | 476.3 |
| 16″ | 16″ | 406 | 23-1/2″ | 597 | 16 | 1-1/8″ | 21-1/4″ | 539.8 |
| 18″ | 18″ | 457 | 25″ | 635 | 16 | 1-1/4″ | 22-3/4″ | 577.9 |
| 20″ | 20″ | 508 | 27-1/2″ | 699 | 20 | 1-1/4″ | 25″ | 635 |
| 22″ | 22″ | 559 | 29-1/2″ | 749 | 20 | 1-3/8″ | 27-1/4″ | 692.2 |
| 24″ | 24″ | 610 | 32″ | 813 | 20 | 1-3/8″ | 29-1/2″ | 749.3 |