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| Material: | Stainless Steel Inner and Outer Ring |
| Application: | Flanges |
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B16.20 Standard Spiral Wound Gasket for Natural Gas
The ASME B16.20 Standard Spiral Sound Gasket is a type of gasket commonly used in high-pressure and high-temperature applications in industries such as oil and gas, chemical, and petrochemical. This ASME B16.20 Standard Spiral Sound Gasket is designed to meet the specifications of the ASME B16.20 standard, which covers the requirements for metallic gaskets for pipe flanges.
The ASME B16.20 Standard Spiral Sound Gasket consists of a metallic winding strip that is spirally wound and sandwiched between layers of non-metallic filler material, such as graphite, PTFE or mica. The winding strip is typically made of stainless steel or other high-performance alloys, providing excellent mechanical strength and corrosion resistance. The non-metallic filler material is chosen based on the specific application and the fluids being sealed, providing excellent sealing capabilities and resistance to chemicals and other fluids.
ASME B16.20 Standard Spiral Sound Gasket, the winding strip and filler material are wrapped around a centering ring made of a compatible material, such as stainless steel, to provide additional support and alignment to the gasket. An inner ring made of the same material as the centering ring may be added to reduce stress on the winding strip and prevent it from buckling or collapsing under pressure.
The spiral wound gasket conforms to the shape of the flange, ensuring that it provides a tight seal even in conditions of high pressure and temperature. ASME B16.20 Standard Spiral Sound Gasket is unique construction allows it to be used in a wide range of applications, from low-pressure to high-pressure and from low-temperature to high-temperature.
Overall, the ASME B16.20 Standard Spiral Sound Gasket is a reliable and effective sealing solution for a variety of industrial applications. Its construction allows for excellent sealing capabilities and resistance to a wide range of chemicals and fluids, making it a popular choice for many industries.
Basic Type
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.
Inner Ring Type
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.
Outer Ring TypeSolid outer ring accurately locates the gasket on the flange face to give the additional radial strength to prevent the gasket blowout and acts as a compression limiter. In case of installing the outer ring, it is very easy to install the gasket to flange face because the end of outer ring will touch at bolts - Suitable for use with flat face and raised face flanges. For class 900 and above an internal ring is recommended.
Inner & Outer Rings TypeA 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.
Typical Applications
Pipe, valve, pump, thermal exchange, condensing tower, plain hole and man hole of flange, etc. Petrochemical, chemical, mechanical manufacturer, power station, metallurgy, shipbuilding, medical and pharmaceutical unclear power station and navigation, etc.
Spiral Wound gaskets, ASME B16.20 Metal Gasket,Marking
| Ring & Strip Materials | ||||||
| Minimum | Maximum | GuideRing Color Code | ||||
| Material | F | C | F | C | Abberviation | |
| SS 304 | -320 | -195 | 1400 | 760 | 304 | Yellow |
| SS 316L | -150 | -100 | 1400 | 760 | 316L | Green |
| SS 347L | -150 | -100 | 1400 | 760 | 317L | Maroon |
| SS 321 | -320 | -195 | 1400 | 760 | 321 | Turquoise |
| SS347 | -320 | -195 | 1700 | 925 | 347 | Blue |
| Carbon Steel | -40 | -40 | 1000 | 540 | CRS | Silver |
| Alloy 20 | -300 | -185 | 1400 | 760 | A-20 | Black |
| Hastelloy B3 | -300 | -185 | 2000 | 1090 | HASTB | Brown |
| Hastelloy C276 | -300 | -185 | 2000 | 1090 | HASTC | Belge |
| Incoloy 800 | -150 | -100 | 1600 | 870 | IN 800 | White |
| Incoloy 825 | -150 | -100 | 1600 | 870 | IN 825 | White |
| Inconel 600 | -150 | -100 | 2000 | 1090 | INC 600 | Gold |
| Inconel 625 | -150 | -100 | 2000 | 1090 | INCO 625 | Gold |
| Inconel X750 | -150 | -100 | 2000 | 1090 | INX | No Color |
| Monel 400 | -200 | -130 | 1500 | 820 | MON | Orange |
| Nickel 200 | -320 | -195 | 1400 | 760 | NI | Red |
| Titanium | -320 | -195 | 2000 | 1090 | TI | Puple |
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