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Special Materials Spiral Wound Gaskets

Special Materials Spiral Wound Gaskets Spiral Wound Gaskets are special semi-metallic gaskets of great resilience; therefore they are very suitable for applications featuring heavy operating conditions. SWG manufactured by spirally winding a V-shaped metal strip and a strip of non-metallic...

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Special Materials Spiral Wound Gaskets

Spiral Wound Gaskets are special semi-metallic gaskets of great resilience; therefore they are very suitable for applications featuring heavy operating conditions. SWG manufactured by spirally winding a V-shaped metal strip and a strip of non-metallic filler material, The metal strip holds the filler, providing the gasket with mechanical resistance and resilience. SWG can be reinforced by an outer centering ring and/or inner ring, The outer centering ring controls the compression and holds the gasket centrally within the bolt circle, The inner retaining ring increases the axial rigidity and resilience of the gasket and acts as a Heat and Corrosion barrier eliminating turbulence between the gasket Inner diameter and the flange bore so avoiding erosion of the flange face.

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All these materials can be adjusted according  to the application environment and sealing media. The inner ring material should match the winding material unless the purchaser specifies. The outer ring may be carbon steel that is painted, metal plated, or otherwise coated to inhibit atmospheric corrosion. Metal winding and filler materials color shall be in accordance with following chart.

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Color Coding and Abbreviations for Spiral-Wound Gasket Materials image008.jpg

Temperature limits for Metal materials of SWG:

金属材料

Minimum

Maximum

℉      ℃

℉      ℃

304

-320

-195

1400

760

316L

-150

-100

1400

760

321

-320

-195

1400

760

347

-320

-195

1700

925

CRS

-40

-40

1000

540

A-20

-300

-185

1400

760

HASTB

-300

-185

2000

1090

HASTC

-300

-185

2000

1090

IN 800

-150

-100

1600

870

INC 600

-150

-100

2000

1090

INX

-150

-100

2000

1090

MON

-200

-130

1500

820

Ni

-320

-195

1400

760

Ti

-320

-195

2000

1090 

More information, please contact us.

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