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

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.