Description

Spiral Wound Gasket Style CGI

Style CGI spiral wound gaskets are a Style CG gasket fitted with an internal ring which gives an additional compression limiting stop and provides a heat and corrosion barrier protecting gasket windings and preventing flange erosion. Suitable for use with flat face and raised face flanges and specified for high pressure/temperature sevie class 900 and above or where corrosive or toxic media are present.

It is customary to select inner ring material to be the same as the metal winding.

Note on use of Inner Rings

• ASME B16.20 which covers spiral wound gaskets requires the use of solid metal inner rings
• Pressure Class 900:nominal pipe sizes 24″ and larger
• Pressure Class 1500:nominal pipe sizes 12″ and larger
• Pressure Class 2500:nominal pipe sizes 4″ and larger
• All PTFE filled gaskets.

Standard of Spiral Wound Gasket

• GB4622.2-2008
• HG20610-2009
• HG20631-2009
• ASME B16.20
• BS EN 1514-2
• BS EN 12560-2
• JIS B2404
• EN 1514-1
• EN 12560-1
• JB-T 4705

*We can make various shapes of spiral wound gasket as your drawing and your dimensions.

Materials Available for Spiral Wound Gasket