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SPIRAL WOUND GASKET


SPIRAL WOUND GASKET

A spiral wound gasket is manufactured by spirally winding a preformed metal strip and a filler on the outer periphery of metal winding mandrels. The winding mandrel outside diameter forms the inner diameter of the gasket and the superposed metal and non-metallic windings are continually wound until the required outer diameter is attained.

STANDARD TYPE

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Basic Style

Basic construction type, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. Suitable for tongue and groove, male and female or grooved to flat face flange assemblies.

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Inner Ring Style

Solid inner metal ring acts as a compression stopper. To prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion. Damages of gasket between flange bore and the inside diameter, the annular space is filled up by solid inner metal ring. Suitable for male and female pipe flanges.

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Outer Ring Style

Solid inner metal ring acts as a compression stopper. To prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion. Damages of gasket between flange bore and the inside diameter, the annular space is filled up by solid inner metal ring. Suitable for male and female pipe flanges.

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In-Outer Ring Style

A inner ring and outer ring type gasket will give an additional compression limiting stopper for gasket inner and outer side. It will prevent the corrosions on flange face at annular space. Suitable for use with flat face and raised face flanges and specified for high pressure temperature service Class 900 and above or where corrosive or toxic media are present.

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LOW-STRESS STYLE TYPE

The Low-Stress gasket offers the same high integrity seal associated with the spiral wound gasket however, the C#SIO-Low Stress has been designed in such a way that compression and sealing requirements are achieved under very low seating stresses.

Low-Stress Style-Type

Low-Stress gasket is designed to seat at only 25,000 psi bolt stress, which means you can use this revolutionary product for a wide range of lightly loaded applications. They are manufactured with high purity flexible graphite, and PTFE filler for optimum sealability, and are available for the full range of standard Class 150 and Class 300 flanges, as well as other non-standard low pressure flanges. Extruded filler allows Low-Stress gasket to be used with lightly loaded flanges.

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OTHER DATA

ASME B 16.20 Marking

Surface Finish Requirements

Gasket Description Gasket Cross Section Flange Surface
Finish Microinch Ra
Flange Surface
Finish Micrometer Ra
Spiral Wound Gasket 125 - 250 3.2 - 6.3
Kammprofile Gasket 125 - 250 3.2 - 6.3
Metal Jacketed Gasket 100-125 2.5 MAX

ASME B 16.20 Color Coding