Dimensions of Non-Metallic Flat Gaskets As Per ASME B16.21 Series B

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Dimensions of Non-Metallic Flat Gaskets ASME B16.21 to be used with Raised Face flanges ASME B16.47 Series B

Non Metallic Gasket Dimensions

CLASS 150 TO 600    Size  26″  TO 60″

NPSd1d2
150#300#400#600#900#
26660725772746765...
28711776826800819...
30762827886857879...
32813881940911933...
34864935994962997...
36914987104810221048...
3896510451099.........
40101610951149.........
42106711461200.........
44111811971251.........
46116812561318.........
48121913071368.........
50127013571419.........
52132114081470.........
54137214641530.........
56142215141594.........
58147315801656.........
60152416301705.........

General notes:

  1. Dimensions are in millimeters unless otherwise indicated.
  2. d2 = Outside diameter.
  3. Dimensional tolerances outside diameter: +0 / -3.0 mm.
  4. Dimensional tolerances inside diameter: ± 3.0 mm.
  5. Thickness (t) specified by customer.

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