Dimensions of Double Metal-Jacketed Gaskets

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Dimensions of Double Metal-Jacketed Gaskets ASME B16.20 to be used with Raised Face flanges ASME B16.5

Double Metal Jacketed Gaskets

Double Metal Jacketed Gaskets

Class 150# to 400#

NPS d1 d2
150 300 400
1/2 23.8 44.5 50.8 50.8
3/4 31.8 54 63.5 63.5
1 36.5 63.5 69.9 69.9
46 73 79.4 79.4
52.4 82.6 92.1 92.1
2 73.2 101.6 108 108
85.9 120.6 127 127
3 107.8 133.4 146.1 146.1
4 131.8 171.5 177.8 174.7
5 152.4 193.8 212.8 209.5
6 190.5 219.1 247.7 244.5
8 238.3 276.3 304.8 301.7
10 285.8 336.6 358.8 355.6
12 342.9 406.4 419.1 415.9
14 374.7 447.7 482.6 479.5
16 425.5 511.2 536.6 533.4
18 489 546.1 593.7 590.6
20 533.4 603.3 650.9 644.5
24 641.4 714.4 771.6 765.3
NPS d1 150 300 400
d2
Double Metal Jacketed Gaskets

Double Metal Jacketed Gaskets

Class 600# to 2500#

NPS d1 d2
600 900 1500 2500
1/2 23.8 50.8 60.4 60.4 66.8
3/4 31.8 63.5 66.7 66.7 73.1
1 36.5 69.9 76.2 76.2 82.5
46 79.4 85.8 85.8 101.6
52.4 92.1 95.3 95.3 114.3
2 73.2 108 139.7 139.7 143
85.9 127 161.9 161.9 165.1
3 107.8 146.1 165.1 171.5 193.8
4 131.8 190.5 203.2 206.5 231.9
5 152.4 238.2 244.6 250.9 276.3
6 190.5 263.6 285.8 279.4 314.5
8 238.3 317.5 355.6 349.3 384.3
10 285.8 396.9 431.8 431.8 473.2
12 342.9 454.1 495.3 517.6 546.1
14 374.7 489 517.6 574.7
16 425.5 562 571.5 638.2
18 489 609.6 635 701.8
20 533.4 679.5 695.5 752.5
24 641.4 787.4 835.1 898.6
NPS d1 600 900 1500 2500
d2

General notes:

  1. Dimensions are in millimeters unless otherwise indicated.
  2. d1 = Inside diameter.
  3. d2 = Outside diameter.
  4. Dimensional dimensional tolerances diameter up to NPS 24 = + 1.58 / – 0 mm for both diameters.
  5. Dimensional dimensional tolerances thickness (t) up to NPS 24 = + 0.80 / – 0 mm.
  6. Thickness (t) specified by customer.

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