Dimensions of Non-Metallic Flat Gaskets ASME B16.21
to be used with Raised Face flanges ASME B16.47 series B
Non-metallic flat gasket
Class 150 to 600    NPS 26 to 60

General notes:

  • Dimensions are in millimeters unless otherwise indicated.
  • d1 = Inside diameter.
  • d2 = Outside diameter.
  • Dimensional tolerances outside diameter: +0 / -3.0 mm.
  • Dimensional tolerances inside diameter: ± 3.0 mm.
  • Thickness (t) specified by customer.

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