Gaskets,Packings, & Seals Inc. 
P.O. Box 509 
Parkersburg, WV 26102 
Tel: 304-422-3880 Fax: 304-422-9476

Industry Standard API Stamping Requirements




Legend:
  • 1.)Winding Metal and Filler Material
  • 2.)Manufactured to ASME B16.20
  • 3.)Nominal Pipe Size and Pressure Class (Standard Gaskets Only)
  • 4.)Outer Ring Material other than Carbon Steel
  • 5.)Innner Ring material other than Carbon Steel
  • 6.)Manufacturer's name or Trademark











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