Gasket Standards

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ASME Standards

  • Nonmetallic gasket dimensions and tolerances in accordance with ASME B16.21 for ASME B16.5 and ASME B16.47 flanges.
  • Standard thicknesses are 1/16" and 1/8", but others are available.
  • Spiral wound gaskets for ASME B16.5 1/4" to 24" dimensions and tolerances in accordance with ASME B16.20.
  • Spiral wound gaskets for ASME B16.47 22" to 60" Series A (MSS SP-44) dimensions and tolerances in accordance with ASME B16.20.
  • Spiral wound gaskets for ASME B16.47 26" to 60" Series B (API Std 605) dimensions and tolerances in accordance with ASME B16.20.
  • ASME B16.20 - Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound, and Jacketed
  • ASME B16.21 - Nonmetallic Flat Gaskets for Pipe Flanges
  • ASME B16.47 - Large Diameter Steel Flanges: NPS 26 Through NPS 60 Metric/Inch Standard
  • ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through 24

ISO Standards

  • ISO 4709 - Composition cork -- Gasket material -- Classification system, requirements, sampling, packaging and marking
  • ISO 7483 - Dimensions of gaskets for use with flanges to ISO 7005

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Tags: Gasket ASME Standards Standards (Associations)