Style CG - Outer Ring

Style CG - Outer Ring

Spiral Wounds » Style CG - Outer Ring

The CG spiral wound is the original standard spiral wound gasket per ASME B16.20. The CG style spiral wound is fitted with an outer centering ring that accurately centers the gasket on the flange face, provides radial strength, and acts as a compression limiter. The outer ring is typically made from painted carbon steel, but other corrosion resistant materials are available like stainless steels and other higher temperature alloys. The CG is a general purpose gasket suitable for use with flat face and raised face flanges.

  • Standard sizes available for most flanges
  • Outer centering ring centers gasket on the flange and provides a compression stop
  • Chevron shaped metal windings provide resiliency
  • Operating temperatures up to 1800 F with Thermiculite® filler
  • Resiliency with fluctuations in temperature/pressure
  • Ease of installation
  • Relative low cost, general purpose gasket
  • Windings available in: 304 SS, 316L SS, 321 SS, 347 SS, Inconel® 600, Incoloy® 800/825, Inconel® X-750, Monel®, +++
  • Winding for corrosive environments - Alloy 20, Hasteloy® C-276, Monel® 400
  • Fillers available: Non-Asbestos, Flexite Super®, Flexible Graphite, Flexicarb®, Mica, Ceramic, PTFE, Non-sintered PTFE
  • High temperature Thermiculite® 835 filler now available
  • Outer Centering Rings available in: Painted Carbon Steel, 304 SS, 316L SS, 321 SS, 347 SS, Inconel® 600, Incoloy® 800/825, Inconel® X-750,  Monel®, +++
  • Standard CG's are 0.175" thick fitted with 0.125" thick solid metal outer centering rings unless otherwise specified
  • Manufactured in accordance to relevent standards to suit the following flange designations: ASME B16.5, BS 1560, BS 10, ASME B16.47 "B", ASME B16.47 "A", BS 4504, DIN, JIS
  • LS low stress version available for weaker flanges and bolts


Standard Flanges

Pump Flanges

Valve Flanges

Compressor Flanges

ASME 16.20 Flanges

ANSI B16.5 Flanges

ANSI BS 1650

Steam Service

Tongue & Groove Flanges

Heat Exchangers

Acid & Caustic Service

Gas Turbines


Chemical Processing


Heat Transfer Fluids

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