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.