How to get high quality Spiral Wound Gaskets?

What are Spiral Wound Gaskets?

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Spiral wound gasket is formed of V-shaped Metallic strip and soft non-metallic filler. Support rings, inside and Outside the spiral, improve the gasket’s handing, fitting and Versatility. Depend on its excellent compression resilience, it is suitable for sealing spots where the alteration of temperature and pressure are frequent.

Spiral Wound Gasket is one of the widely used seals, the spiral wound gasket depends on the mechanical characteristics of a formed metal strip which works as a spring, offering a better resilience under fluctuated pressure & temperature. They are widely used in the industrial field and fluid sectors.

Spiral wound gaskets is formed of V-shaped Metallic strip and soft non-metallic filler. Support rings, inside and Outside the spiral, improve the gasket’s handing, fitting and Versatility.
Depend on its excellent compression resilience, it is suitable for sealing spots where the alteration of temperature and pressure are frequent.

Types:

YA600-R Basic Type Gaskets
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.
YA600-IR Inner Ring Type Gaskets
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.
YA600-CG Outer Ring Type Gaskets
Solid 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.
YA600-CGI Inner & Outer Rings Type Gaskets
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.

Typical Applications 

Pipevalve, 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.

Prime Features

  • Gasket are made in a wide variety of sizes and shapes.
  • Combinations of metal strip and filler are selected to suit the specific fluid media and operating conditions.
  • Quick to install and remove
  • Make gaskets suitable for high pipeline pressure on flat or raised flange faces.
  • Temperatures from cryogenic up to 1000 °C

Specifications

  • Products are manufactured in accordance with all relevant gasket standards to suit flange designations: ASME B 16.20, ASME B 16.5, BS1560, ASME B 16.47 A (B), BS EN 1092, DIN, JIS, and NF, etc.
  • Color cord as ASME B 16.20 on request.

Marking & Stamping:


Standards Spiral Wound Gaskets 00 300x205 - How to get high quality Spiral Wound Gaskets?

Coloring Guardlines for Spiral Wound Gaskets

Spiral wound gasket color coding guardlines 300x300 - How to get high quality Spiral Wound Gaskets?

Spiral Wound Gaskets Package Types

  • Between 1/2” ~ 24” gaskets are packaged by plastic clips each 10 pcs. 
  • Upto 24” gaskets packaged by soft cotton tape each.
  • To ensure that clients receive the highest quality of spiral wound gaskets.

Spiral Wound Gaskets Package Types 300x84 - How to get high quality Spiral Wound Gaskets?

Nuclear Spiral Wound Gasket

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Nuclear Spiral Wound Gasket is one of the most innovative and creative gaskets.

  • Normal pressure: PN≤420 or Class≤2500
  • Normal diameter: DN≤600 or NPS≤24
  • Sealing Capability: ≤1×10-7Pa*M 3/s
  • Temperature: ≤450oC(air-like oxidizing medium);
  • ≤650oC (steam)

Typical Applications
Nuclear Spiral Wound Gasket provides the most effective sealing, the most reliable operation and he largest security assurances for middle and high pressure, high temperature or (and) fluctuation temperature, containers with nuclear safety level, equipments, valves, piping flange connecting.
Cooling water, steam, boric acid, air, nitrogen, demineralized water, oil, oxgen, 30% sodium hydroxide solution, and 7% nitric acid solution.
Specifications

  • Conform to ASME, GB, EN, JIS and HG standards as well as the dimension of non-standard raised flange, tongue and groove flange or groove flange.
  • Normal thickness: 4.4, 6.6, 10mm and so on.
  • Both inner and outer fixed rings are made of 304 and 316L austenitic stainless steel.

Non-rounded Spiral Wound Gaskets

Non-rounded Spiral Wound Gaskets are oval style and oblong style, This kind of gasket is suit for Boilers and manholes. Please providing complete specification when ordering it.

Special Non-rounded Spiral Wound Gaskets

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  • Gaskets for Boilers handholes and manholes.
  • There are oval style and oblong style.
  • When ordering it providing complete specification is required.

Specification
Non-rounded Spiral Wound Gaskets are oval style and oblong style, This kind of gasket is suit for Boilers and manholes. Please providing complete specification when ordering it. Including inside dimensions (A*B), width (b) and thickness (s) or a drawing.
Shape of non-rounded spiral wound gasket

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Ordering Example

  • SWG Oval (or oblong)
  • A*B*b*s
  • Winding: AISI 316
  • Filler: Graphite

Spiral wound gasket for heat exchangers

Spiral wound gasket for heat exchangers are designed for heat exchangers, it can be with or without inner and outer rings.This style spiral wound gasket is for heat exchangers where pass bars are required. The outer portion is of standard spiral wound construction. The rib portion is normally of single or double jacketed style.

Spiral Wound Gasket for Heat Exchangers

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The outer wound nose to ensure correct sealing element location in the flange recess.

  • A spiral wound sealing element to ensure a positive seal under fluctuating temperature and pressure conditions.
  • A solid metal inner ring to protect the sealing element and act as a compression stop.
  • Can be supplied with pass partition bars in any configuration. Pass bars are secured to the inner ring can be supplied in either solid metal or double jacketed construction.

Typical Applications
* The gaskets which with outer rings are primarily designed for TEMA male and female flanges.
* Gaskets are custom built to suit the design conditions of individual heat exchanger vessels.
Specifications
Spiral wound with inner or outer or with partition ribs acts a pass bars. Manufactured to customer design.

Spiral Wound Gaskets are made of a preformed thin metallic strip combined with a soft sealing composite material, wound together under pressure to energize the sealing element to act like a spring when compressed between two flange faces. The sealing element can be used stand-alone or in 
conjunction with inner and/or outer rings depending on the application.
Spiral Wound Gaskets are available in a full range of styles and materials and are manufactured in accordance with ASME B16.20 for use in all industry flanges, including ASME/ANSI B16.5, ASME B 16.47, Series A & B.

Spiral Wound Gaskets can be made from a large selection of alloys and filler materials in a variety of shapes and sizes. Some of the most common shapes are as follows.

Style S Gasket– Sealing Element
Designed for tongue and grove applications, the style S gasket is a stand alone sealing element where the ID is reinforced with several layers of metal winding, filler material is then introduce to offer greater sealing ability and the gasket is finished with several more layers of metal to help insure stability. 
Style SI Gasket– Sealing Element with Inner Ring
The SI configuration is the same as the S except that a solid inner ring is utilized to prevent over compression. This design is also helpful in turbulent applications which are prone to cause erosion of the flange faces. 
Style CS Gasket– Centering Ring with Sealing Element
The CS gasket utilizes an external ring where the ID is grooved to insert a sealing element. The external ring or centering ring is designed to properly guide the gasket on a bolted flange accurately centering gasket. The Centering also provides additional radial strength to prevent gasket blowout and acts as a compression limiter.
Style CSI Gasket– Centering Ring with Sealing Element and Inner Ring
The CSI gasket is best suited where high pressure and temperature is a factor or in applications where corrosive or toxic media maybe present. Like the CS profile, the CSI gasket includes an inner ring which has proven to be very helpful to eliminate inward buckling of the sealing element.
ASME B16.20 requires the use of CSI gaskets when PTFE is used as the filler in all ANSI B16.5 applications as well as: 
     • 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

Type & Advantage:

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R Type Spiral Wound Gasket
R 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. 
● Recommended flange tongue and groove, male to female and flat face to recess.
● General and critical duties.

20166111658465594180 - How to get high quality Spiral Wound Gaskets?

IR Type Spiral Wound Gasket

IR 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.

● General duties.

20166111659105306338 - How to get high quality Spiral Wound Gaskets?

CG Type Spiral Wound Gasket

CG Outer Ring Type

● Solid 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.

● General and critical duties.

20166111659374208255 - How to get high quality Spiral Wound Gaskets?

CGI Type Spiral Wound Gasket

CGI Inner & Outer Rings Type

● 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.

● General and critical duties.

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. Prime Features

* Gasket are made in a wide variety of sizes and shapes.

* Combinations of metal strip and filler are selected to suit the specific fluid media and operating conditions.

* Quick to install and remove

* Make gaskets suitable for high pipeline pressure on flat or raised flange faces.

* Temperatures from cryogenic up to 1000 °C

Specifications & Materials

* Products are manufactured in accordance with all relevant gasket standards to suit flange designations: ASME B 16.20, ASME B 16.5, BS1560, ASME B 16.47 A (B), BS EN 1092, DIN, JIS, and NF, etc.

* Color cord as ASME B 16.20 on request.

* Provide complete range of materials spiral wound gaskets, combining the performance of the materials. Including Monel 400/ Inconel 600,625,800,825/ Hastelloy B3/ Hastelloy C276/ Titanium,etc. Range of fillers: Graphite, PTFE, Non-asbestos, Mica, etc.

Ring & Strip Materials

Minimum

Maximum

Guide Ring Color Code

Material

F

C

F

C

Abberviation

SS304

-320

-195

1400

760

304

Yellow

SS316L

-150

-100

1400

760

316L

Green

SS347L

-150

-100

1400

760

317L

Maroon

SS321

-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

Filler Materials

Minimum

Maximum COT

Stripe Color Code

Material

F

C

F

C

Abberviation

Flexible Graphite

-350

-212

950

510

F.G.

Gray

PTFE

-400

-240

500

260

PTFE

White

Ceramic

-350

-212

2000

1090

CER

Light Green

Mica Graphite

-350

-212

1100

590

MICA-GRA

Pink

Spiral Wound Gaskets Package Types

To ensure that clients receive the highest quality of spiral wound gaskets, Spiral Wound Gaskets are packaged with the utmost care to prevent damage during shipping to the job site, please see below:

  • Between 1/2” ~ 24” gaskets are packaged by plastic clips each 10 pcs. 
  • Up to 24” gaskets packaged by soft cotton tape each.

How to Order Spiral Wound Gaskets?

1.Nominal pipe size or specific gasket dimensions
2.Pressure rating
3.Winding and filler materials
4.Centering / outer ring or inner ring material

Source: China Spiral Wound Gaskets Manufacturer – Yaang Pipe Industry (www.steeljrv.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

If you want to have more information about the article or you want to share your opinion with us, contact us at sales@steeljrv.com

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References:

  • https://www.yaang.com

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