Spiral wound gasket dimension to ASME B16.20 to suit ASME B16.47 Series A Flanges.
Dimensions D1, D2, D3 and D4 are in mm.
| Nom Pipe Size |
Inside Diameter of Inner Ring (D1) |
Inner Diameter of Sealing Element (D2) |
Outside Diameter of Sealing Element (D3) |
Outer Diameter of Centering Ring (D4) |
|---|---|---|---|---|
| 26 | 660.4 | 685.8 | 736.6 | 882.7 |
| 28 | 711.2 | 736.6 | 787.4 | 946.2 |
| 30 | 768.4 | 793.8 | 844.6 | 1009.7 |
| 32 | 812.8 | 850.9 | 901.7 | 1073.2 |
| 34 | 863.6 | 901.7 | 952.5 | 1136.7 |
| 36 | 920.8 | 958.9 | 1009.7 | 1200.2 |
| 38 | 10009.7 | 1035.1 | 1085.9 | 1200.2 |
| 40 | 1060.5 | 1098.6 | 1149.4 | 1251.0 |
| 42 | 1111.3 | 1149.4 | 1200.2 | 1301.8 |
| 44 | 1155.7 | 1206.5 | 1257.3 | 1368.6 |
| 46 | 1219.2 | 1270.0 | 1320.8 | 1435.1 |
| 48 | 1270.0 | 1320.8 | 1371.6 | 1485.9 |