For applications with high temperature variations thermal cycling, pressure variations, or flange rotation problems, gaskets with adequate flexibility and recovery are required. The circumferance of the outer ring of the gasket inscribes the bolt of the flange, making gasket centering easy. Advanced sealings style swi spiral wound gasket is made up of a spiral wound sealing element with an outer guide ring that serves to center the gasket in a standard flange, and an inner ring to prevent inward buckling of. The sealing element is manufactured by interleaving plies of alternating metallic winding strip and filler to create a gasket. The inner retaining ring increases the axial rigidity and resilience of the gasket. The garlock edge gasket seals at lower bolt stress while virtually eliminating the problem of inward buckling. Ring joint gasket products, please contact flexitallics technical department. We manufacture spiral wound gaskets in sizes from dn 10 to a diameter of 1200 mm. Macroseal provides a large inventory of spiralwound gaskets, metallic gaskets and.
Spiral wound gaskets comprise a mix of metallic and filler material. For problematic ring type flange applica tions, the specialized flexitallic cgrj spiral wound gasket design may also be considered. The tandem seal combines chemical resistance and fire safety in a single gasket. In conjunction with an inner ring, the standard spiral wound construction also supports an outer wound steel nose, designed for the purpose of accurate gasket location. Welcome to the next generation of sealing technology 3 overcoming flange imperfections distortion trough surface imperfections scorings nonparallel mounted flanges the gasket a gasket. Spiral wound gaskets swg general information and description the sealing element of the spiral wound gasket consists of a vshaped metal strip spirally wound in combination with a soft sealing material filler. Operational conditions such as temperature, pressure, and media will dictate selection of the proper spiral wound gasket. Inner ring recommended for all gaskets exceeding class ansi 600lbs. Operational conditions such as temperature, pressure, and media will dictate selection of the proper spiral wound gasket for your application. Dimensional data for standard spiral wound gaskets o. It is created by winding alternating strips of metal and filler material. Pdf generic issues effecting spiralwound gasket performance.
The solid metal ring prevents overcompression of the gasket, which is especially. The primary purpose for this development was the increasingly severe temperatures and pressures used by u. This will not damage the gasket or affect the sealing performance and the ring is provided as a compression limiting stop. Flexseal industrial is a full line gasket and oring distributor. It is designed for tongue and groove and malefemale flanges. Exhaust flange gaskets made of vshaped, spiral wound layers of stainless steel and either a nonasbestos filler or flexible graphite are available for all lycoming engines using the two or three hole gasket design. Dimensions of spiral wound gaskets class 150, asme b16. Low stress spiral wound type gasket, flexible graphite filled 598 0. The spiral wound sealing element provides resilience, strength, blowout resistance and superior sealability. Spiral wound gaskets information 3 available styles of spiral wound gaskets 46 dimensions for style w to suit lar ge male and female joints 7 style w spiral wound gasket tolerances 8 dimensions for style w to suit lar ge and small tongue and groove joints double colour coding for spiral wound gaskets as per asme b16.
The designdimensions of the gasket diameters are stipulated by the asme b16. Typical applications include pipelines and pressure vessels on steam, petrochemical, nuclear, marine and hydraulic plant. Klinger maxiflex spiral wound gaskets klinger australia. Resiliency and strength make spiral wound gaskets an ideal choice under a variety of conditions and applications. Graphite and reinforced graphite is available in both sheet format and pre cut to suit all.
Spiral wound gaskets can be reinforced by an outer centering ring andor inner retaining ring. Flexseal spiral wound gaskets flexible graphite, ptfe or therma pur filled x all bolt torque values are based upon t he use of new nuts a194 grade 2h and new bolts a193 grade b7 of. However, from a sealing technology point of view, at diameters above 1100 mm is recommended the use of grooved gaskets. Spetospir s spiral wound gasket made from alternate layers of. Gaskets basics, types, working principle, calculation of. The flexitallic spiral wound gasket is the precision engineered solution to such problems, meeting the most exacting conditions of both temperature and pressure in flanged joints and. Technical catalogue spiral wound gaskets comdiflex.
The style mcs gasket is an exclusive flexitallic design, consisting of a flexitallic spiral wound gasket with an integral solid metal inner andor outer ring. Generally, the gasket has a metal normally carbon rich or stainless steel wound outwards in a circular spiral other shapes are possible with the filler material generally a flexible graphite wound in the same manner but starting from the opposing. Data specification sheet novus spiral wound gaskets. Flexitallic is the market leader in the manufacture and supply of static sealing solutions, delivering high quality industrial gaskets on a global scale. Spiral wound gasket using chemicalresisting valflon tape as filler material, these spiral. A vshaped crown centered in the metal strip acts as a spring, giving the gasket greater resiliency under varying conditions. Cgrj and cgirj spiral wound gaskets are designed for use, as a replacement maintenance item, of standard oval and octagonal ring joint gaskets. The importance of flange gasket storage gallagher fluid. Table 22 recommended torque cg spiral wound gaskets 33 table 23 recommended torque cgi spiral wound gaskets 34 table 24 bolting data for asme b16.
The outer centering ring controls the compression and holds the gasket centrally within the bolt circle. Above is the maxiflex spiral wound gaskets basic sealing element. Leadercam camprofile fr this profile has a section that performs as the guide ring in a sr spiral wound gasket. Pdf file, spiral wound cataloggasket indetification, gasket selection. Pdf spiralwound gaskets swg are used extensively as primary seals in critical joint applications of plant process piping systems in all industries. Several layers of specially formed continuous v shaped also called chevron shaped metal. Welcome to the next generation of sealing technology. The metal strip provides outstanding resilience, while the flexible sealing filler guarantees excellent sealing. Ptfe filled spiral wound gasket, in such a case inner filler ptfe, outer filler graphite. Styles cg and cgi can be compressed to the ring thickness, if necessary. Acts as compression limiter preventing overloading and over compression of the spiral wound sealing element. This gasket is resilient and automatically adjusts for mechanical compression, internal. Failure analysis of pipe joint spiral wound gasket using finite element analysis fea zainulariffin bin awang thesis submitted in fulfillment of the requirements for the award of the degree of bachelor of mechanical engineering faculty of mechanical engineering universiti malaysia pahang december 2010. Class 150 class 300 class 400 class 600 1 110 190 110 160 110 160 1.
Rwi spiral windings, an outer centering ring that is used to locate the gasket, provide additional radial strength and can act as a compression limiter, and an inner ring to reduceprevent radial buckling. Spiral wound gaskets have become extremely popular due to the wide variety of available styles and sizes. Solid outer ring accurately locates the gasket on the flange face to give the additional radial. Note spiral wound gasket inner ring metallurgy is typically the same as the winding material. Spiral wound gaskets are fabricated from thin metal strip sandwiched between layers of nonmetallic filler. Because of the robust design of the spiral wound gasket, it is. These gaskets are intended for use on class 150 and 300 applications, where customers traditionally do not use spiral wound gaskets. Metallic spiral wound gasket shall be packed in nos. Documents such as clean air act, taluft and ippc force the end user. Its uses are similar to the spiral wound gasket profile s. Required gasket compression for spiral wound gaskets spiral wound gaskets with internal or external rings, i. Metaflex spiralwound gasket compression b semimetallic.
These gaskets are intended for use on class 150 and 300 applications, where customers traditionally do not use spiral wound gaskets due to concerns about exceeding. Learn about spiral wound gasket including dimensions and. Used as a guide for location of gasket between the bolts. Maxiflex spiral wound gaskets combine the ease of sealing a graphite, ptfe or mica filler with the strength afforded by a specially profiled metallic, springlike reinforcement. When looking for a high pressure and high temperature gasket sprial wound gaskets are the industries standard. Designing of flanges and faces, also for apparatuses, by manual entering of geometrical. Flange gasket storage is often an afterthought for many of our customers. Spiral wound gasket is composed of a steel outer ring, a spiral wound sealing strip filler and a special steel inner ring. The sealing element is manufactured by interleaving plies of alternating metallic winding strip and filler to create a gasket that is robust and easy to install. Spiral wound gaskets spiral wounds are available in a fill range of styles and material and are manufactured in accordance with asme b16.
Spiral wound gaskets class 150 dimensions of spiral wound gaskets class 150, asme b16. The spiral wound sealing element provides resilience, strength, blowout resistance and. Data specification sheet novus spiral wound gaskets properties spiral wound gaskets are suitable for use across a wide gasket stress range. Edmonton, b 8700 v 7803989 27 spiral wound gaskets spiral wound gaskets are designed for asme b16. This gasket system also has an inner as well as outer support ring in addition to the wound spiral.
Metallicgasket materials metal gaskets,, solid metal gaskets, metaljacketed gaskets metal clad and solid metal heat exchanger gaskets, 1515 17 20 21 22 heat exchanger gaskets standard shape index spiral wound gaskets. For example, the controlled density process for spiral wound gaskets ensures a high tightness level at a lower bolt stress. Gasket handbook 1 edition fluid sealing association. Spiral wound gaskets swg benefits of the centring ring the spiral wound gasket outer centring ring provides the following benefits. Gasket handbook 1st edition fluid sealing association. Spiral wound gaskets can be used for sealing flange joints, manhole and handhold covers, tube covers, boilers, heat exchangers, pressure vessels, pumps, compressors and valves. Spiral wound gasket is the precision engineered solution to such problems, meeting the most exacting conditions of both temperature and pressure in flanged joints and similar assemblies and against virtually every known corrosive and toxic media. Spiral wound gasket the identification of metallic winding materials and fillers the color coding on outer ring for clear identification, zw spiral wound gaskets nominate a colorcoding system around the outside edge of the outer ring, thus allowing full identification of both the winding strip and filler materials in according to asme b16. Wound gaskets can be manufactured in accordance with all relevant gasket standards to suit the following.
In this article we will discuss the spiral wound gasket basic characteristic and styles. The spz spiral wound gasket can withstand severe operation conditions, as the ptfe sealing zone is protected by areas with graphite filler. Recommendations when using hpde piping with flanged joints, ensure that the flange bolts are retorqued at least 24 hours after gasket installation. Spiral wound gaskets can be fabricated of any metal which is available in thin strip. Spiral wound gasket cg munaco sealing solutions, inc. It should carry proper identification giving the size, type, drawing number and. The spiral wound gasket with center ring is for use w ith flat face and raised face flanges, this gasket features increased compressive. Flexitallic innovative gasket and sealing solutions. Flexseal spiral wound gasket flexseal spiral wound gaskets are made with an alternate combination of preformed metal wire and soft filler materials that forms a highly effective seal when compressed between two flanges. When evaluating gasket material, be sure to include any surge pressure that could be caused by opening valve and starting pumps.
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