Gasket markings and color code

Standard: ASME B16.20 2017.

Part RJ - Ring-Joint Gaskets

  • RJ-7 Identification Number

PART SW Spiral-Wound Gaskets

  • SW-4 Marking

PART JA Jacketed Gaskets

  • JA-5 Marking

PART GM Grooved Metal Gaskets With Covering Layers

  • GM-4 Marking

SW-4 Markings- Table SW-3-1 Color Coding and Abbreviations for Spiral-Wound Gasket Materials