Cross-section Spiral Wound gasket

Dims of Spiral Wound Gaskets ASME B16.20

used with RF flanges ASME B16.5

OTHER PRESSURE CLASSES

150

NPS Inner Ring Sealing Element Outer Ring
d1 d2 d3 d4
1/2 14.2 19.1 31.8 47.8
3/4 20.6 25.4 39.6 57.2
1 26.9 31.8 47.8 66.8
1.1/4 38.1 47.8 60.5 76.2
1.1/2 44.5 54.1 69.9 85.9
2 55.6 69.9 85.9 104.9
2.1/2 66.5 82.6 98.6 124
3 81 101.6 120.7 136.7
4 106.4 127 149.4 174.8
5 131.8 155.7 177.8 196.9
6 157.2 182.6 209.6 222.3
8 215.9 233.4 263.7 279.4
10 268.2 287.3 317.5 339.9
12 317.5 339.9 374.7 409.7
14 349.3 371.6 406.4 450.9
16 400.1 422.4 463.6 514.4
18 449.3 474.7 527.1 549.4
20 500.1 525.5 577.9 606.6
24 603.3 628.7 685.8 717.6

General notes..


Marking of Spiral Wound Gaskets


Marking of Spiral Wound Gaskets


Cross Section of a Spiral Wound gasket


Cross Section of a Spiral Wound gasket