Spiral Wound Gaskets

Components:

  • Metallic strip - holds the filler
  • Filler - flows under pressure filling the imperfections and creating sealability for the gasket.
  • Guide ring-holds the filler and metallic strip in the proper position.

Materials used:

  • Metallic strip - 0.006" thick, Stainless Steel 304, 304L, 316, and 316L. 'L' specifies low carbon content. Other materials are available upon request.
  • Filler types -
    • Flexible graphite - temperature depending on applications:
      • Steam and hydrocarbons - 1200 F.
      • Oxygen service(if sealing element is totally enclosed) 930F
      • Oxidizing services - +600 F
      • Gasket must be enclosed.
      • Oxidizing agents are nitric acid and sulfuric acids, chromium, chlorine acids and liquid alkaline metals.
      • Fire safe.
    • PTFE - higher chemical resistance is required - 500F maximum.
    • MICA graphite - asbestos replacement - 660 F maximum.
      • Do not use in refineries, chemical plants or any flamable media
  • Guide ring - carbon steel and electro-plated, standard thickness 0.125" (1/8")
    • Inner ring - used in high pressure applications to avoid over compression. Not standard on spiral wounds gaskets. The inner ring is made of the same type of materials as the guide ring.

  • Information required for ordering -

  • Thickness - Standard IS 0.125"(1/8")
  • Flange Size- 0.5", 0.75", 1.0", 1.5", 2.0", 2.5", 3.0", 3.5", 4.0", 5", 6", 8", 10", 12" up to 60"
  • Pressure class - 150LB, 300LB, 600LB, 900LB, 1200LB.
  • Type of filler
  • Material used for metallic strip
  • Inner Ring?(is one required)

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