Spiral wound gasket dimension to ASME B16.20 to suit ASME B16.47 Series B 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 | 666.8 | 692.2 | 749.3 | 838.2 |
| 28 | 717.6 | 743.0 | 800.1 | 901.7 |
| 30 | 781.1 | 806.5 | 857.3 | 958.9 |
| 32 | 838.2 | 863.6 | 914.4 | 1016.0 |
| 34 | 895.4 | 920.8 | 971.6 | 1073.2 |
| 36 | 920.8 | 946.2 | 997.0 | 1124.0 |
| 38 | 1009.7 | 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 |