Spiral wound gaskets must contain an appropriate filler between the winding for the application. Spiral wound gaskets are produced in several types and combination of materials to fit the most stringent application. Spiral wound gaskets are usually of circular shape, however we can produce them in other shapes such as. Spiral wound gaskets are available for classes 150 to 2500. Made of a range of metals, spiral wound gaskets work by having a compressive load squeeze the metal widings which because of there v shape have the ability to recover from compression.
This will not damage the gasket or affect the sealing performance and the ring is provided as a compression limiting stop. The cg spiral wound is a good general purpose gasket and is suitable for use with flatface and raisedface flanges. Flexitallic style cg and cgi spiral wound gaskets can be asme b16. 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. Required gasket compression for spiral wound gaskets spiral wound gaskets with internal or external rings, i. Hightemp steam unions extreme environment, class 3000 service hart industrial spiral wound gasket unions are engineered to provide class 3000 service in extreme temperature and environmental conditions. However, from a sealing technology point of view, at diameters above 1100 mm is recommended the use of grooved gaskets. Training course material and exam documents are provided. Multiple plies of metal and filler in the spiral create a barrier that reduces the possibility of leaks. Spiral wound gaskets are designed to meet these demanding conditions.
Image shows a spiral wound gasket with inner and outer ring. Outer guide ring is fitted to centralise the gasket between the bolts and to act as a compression limiter. Spiral wound gaskets class 150 dimensions of spiral wound gaskets class 150, asme b16. Spiral wound, metal jacketed, and kamprofile gasket are well known in composite gasket category. Special materials to suit specific operating conditions are available. The garlock edge gasket seals at lower bolt stress while virtually eliminating the problem of inward buckling. Spiral wound gaskets maxiflex spiral wound gaskets have the ability to recover under the action of fluctuating loads caused by process fluid pressure and temperature changes, flange face temperature variations, flange rotation, bolt stress relaxation and creep. We manufacture spiral wound gaskets in sizes from dn 10 to a diameter of 1200 mm. The material for the metallic strip conforms to aisi 3043163221. Gasket handbook 1st edition fluid sealing association. T h e a n s w e r i s a l w a y s flexitallic gasket design criteria introduction flexitallic, the worlds leading manufacturer and supplier of static seals and the originator of the spiral wound gasket, is committed to sealing solutions for todays industry.
Our spiral wound gaskets are made of a preformed metallic strip and a soft filler material ptfe, or flexible graphite, wound together under pressure. It is created by winding alternating strips of metal and filler material. Sunwell sw6 00series description sunwell sw600 spiral wound gasket is formed of vshaped metallic strip and soft nonmetallic filler. Torque chart cgi series a flexitallic spiral wound gasket. Klinger maxiflex spiral wound gaskets klinger australia. Spiral wound gaskets are suitable for use across a wide gasket stress range. Learn about spiral wound gasket including dimensions and. Spiral wound gaskets mechanical engineering materials scribd. Required surface finish 125 250 microinch ra design parameters tolerance capabilities. Widely used throughout refineries and chemical processing plants, spiral wound gaskets are also effective for power generation, pulp and paper, aerospace, and a variety of valve and specialty applications. Data specification sheet novus spiral wound gaskets. Spiral wound gaskets style 304 with outer ring metallic thickness standard thickness of the metallic strip is 0. The inner retaining ring increases the axial rigidity and resilience of the gasket.
The outer centering ring controls the compression and holds the gasket centrally within the bolt circle. Dimensions of spiral wound gaskets according to en 15142 for use with din flanges en 10921 dimensions spiral wound gaskets according to en 15142 for use with flanges din en 10921 explore the world of piping. Spiral wound gaskets durlon spiral wound gaskets are manufactured according to asme b16. Style ls gaskets have the inherent strength, resiliency and blowout resistance of spiral wound gaskets. Spiral wound gaskets for boiler manhole cover assemblies the flexitallic manhole gasket spiral constructions incorporate modified compression values to provide seating loads within the normal range of cover assemblies.
Spiral wound gaskets can be used to seal fluid pressures up to 250 bar and from cryogenic temperatures up to elevated temperatures of oc. Stop by our booth thank you to everyone that donated christmas presents for the salvation army appeal charity salvationarmy s. Outer ring it is made of carbon steel and painted in order to avoid corrosion although it. Custom filler, winding strip, guide ring and inner ring materials are available upon request. Style cgi spiral wound gaskets are suitable for use on flatface and raisedface flanges, and can be specified for high pressuretemperature service or where corrosive or toxic media.
From a sample, drawing or cad file, lamons can program. Composite gaskets are cost effective with compare to metal gaskets but careful handling is required. Spiral wound gasket spiral wound gaskets are made of a preformed metallic strip and a soft filler material ptfe or flexible graphite, wound together under pressure, and optionally with an inner andor outer guide ring. Gaskets for pipe flanges which includes spiral wound gaskets and nonmetallic. Table of dimensions and tolerances of spiral wound gaskets. Pdf generic issues effecting spiralwound gasket performance. For extra large diameters up to 4000 mm is more recommended the thickness about 6,5 mm or 7 mm.
These can be produced in a wide range of sizes, shapes and thicknesses as well as var iable densities to suit a var iety of sealing requirements. Data specification sheet novus spiral wound gaskets properties spiral wound gaskets are suitable for use across a wide gasket stress range. Clearly stamped in either the outerinner ring is the size, materials constructed from, windings material and filler. This study describes the research and evaluation of the gaskets used in pipe systems. Dimensional data for standard spiral wound gaskets o. It discusses field service experience using the gasket on a uk refinery.
Because of the robust design of the spiral wound gasket, it is. Leader spiral wound gasket type s high integrity spw gaskets description designed more than 100 years ago, spiral wound gaskets swgs are widely used as high integrity and sustainable gaskets. Spiral wound gasket is composed of a steel outer ring, a spiral wound sealing strip filler and a special steel inner ring. 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. Inner rings should be used with spiral wound gaskets on maleandfemale flanges, such as those found in heatexchanger, shell, channel, and coverflange joints. Referring to the title failure analysis of pipe joint gaskets spiral wound, this gasket is suitable for use in piping systems spiral wound gasket designs are typically used in flat faced pipe flanges. Spiroflex gaskets spv retain the same filler strip throughout. Flexitallic style mcs spiral wound gaskets are available in a wide range of materials for standard, as well as special design manhole cover assemblies, in pressure classes of 0499 psi, 0999 psi, and psi and higher.
Operational conditions such as temperature, pressure, and media will dictate selection of the proper spiral wound gasket for your application. Gasket selection sprial wound gaskets one of the best allaround seals, the spiral wound gasket offers a lowcost solution that has the ability to handle temperature and pressure fluctuations. 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. Edmonton, b 8700 v 7803989 27 spiral wound gaskets spiral wound gaskets are designed for asme b16. 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. The tandem seal combines chemical resistance and fire safety in a single gasket. Our key freight carriers are not back to full capacity.
They are also often used in pump applications with recessed. Profiles type sw spiral wound gasket without inner and outer ring for force shunt and groove and spring applications. Spz type spiral wound gaskets, with different materials in the sealing zone, used to be manufactured with graphite filler strip in the middle area and ptfe or graphite for insideoutside filler strip. Kammprofile gaskets spiral wound gaskets with inner ring solid metal gaskets low pressure gaskets include. Flexitallic is the market leader in the manufacture and supply of static sealing solutions, delivering high quality industrial gaskets on a global scale.
Above is the maxiflex spiral wound gaskets basic sealing element. For additional information on flexitallic style mcs spiral wound gaskets, contact the flexitallic plant nearest you. Durlon spiral wound gaskets swg are made with an alternating combination of a preformed engineered metal strip and a more compressible filler material which creates an excellent seal when compressed. Several layers of specially formed continuous v shaped also called chevron shaped metal. Spiroflex spiral wound gaskets spiral wound gaskets have long been used as sealing elements in refineries, chemical plants, gas installations, water treatment plants and in general pipeline construction. Spiral wound gaskets 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. Graphonic gaskets garlock kammprofile gaskets the garlock edge gasket other metal gaskets garlock manufactures a wide variety of doublejacketed, spiralwound, metalclad and solid metal gaskets for heat exchanger and. Dimensions spiral wound gaskets according to en 15142 for. Spiral wound gaskets are also used in high pressure pipelines and are made with stainless steel outer and inner rings and a center filled with spirally wound stainless steel tape wound together with graphite and ptfe, formed in v shape. Gaskets general nonmetallic flat, spiral wound gaskets. Pdf file, spiral wound cataloggasket indetification, gasket selection. View all products from flexitallic the market leader in the manufacture and supply of static sealing solutions, delivering high quality industrial gaskets on a. Our standard production program comprises a range of spiral. Thegasket sealing element consists of a preformed metallic.
Spiral wound gaskets can be fabricated of any metal which is available in thin strip and which can be welded. The sealing element is manufactured from preformed, vshaped metallic windings with intermediate soft sealing fillers. Type swi spiral wound gasket with inner support ring. We offer superior customer service and are committed to meeting the needs of all. Pdf spiralwound gaskets swg are used extensively as primary seals in critical joint applications of plant process piping systems in all industries. The data is presented in english and international system metric units. Flexitallic, the worlds leading manufacturer and supplier of static seals and the originator of the spiral wound gasket, is committed to sealing solutions for todays industry. Resiliency and strength make spiral wound gaskets an ideal choice under a variety of conditions and applications. They are used in a wide range of pressure and temperature services. In the case of spiral wound gaskets, if the inner ring andor windings are not secured between the flange faces, radial buckling can occur when the assembly bolts are tightened. Type swio spiral wound gasket with centring ring and inner ring.
The primary purpose for this development was the increasingly severe temperatures and pressures used by u. The spiral wound gaskets are used to replace the plastic gaskets asbestosfree or graphite when their limits of application are exceeded. Technical catalogue spiral wound gaskets comdiflex. The current m and y data we have available on selected gasket products. We offer superior customer service and are committed to meeting the needs of all your industrial sealing applications. Many spiral wound gaskets for critical applications include an inner guide ring also, which gives the gasket a greater resistance to thermal shock and in the case of vacuum service prevent the filler material being sucked in. Spiral wound gaskets can be reinforced by an outer centering ring andor inner retaining ring.
Ptfe virgin white applications spiral wound gaskets are widely used in the. The metal strip, in 304, or 316 stainless steel, holds the filler resulting in excellent mechanical resistance, resilience, and recovery. Macroseal provides a large inventory of spiralwound gaskets, metallic gaskets and. Style aspcg spiral wound gaskets are ideal for high temperature and high pressure applications. Firesafe certified gaskets high performance sealing technology certified to api 607 iso 10497 suitable for high pressure applications ptfe inner seal ideal for corrosive media proven highperformance design corrugated and spiral wound variants cover broad range of applications. Flexitallic innovative gasket and sealing solutions. Spiral wound gaskets are made and assembled in accordance with asme b16. All cg and cgi gaskets for these standard flanges are 4. For example, the controlled density process for spiral wound gaskets ensures a high tightness level at a lower bolt stress.
Common filler materials include graphite, sintered or unsintered ptfe and mica. Support rings, inside and outside the spiral, improve the gaskets handing, fitting and versatility. Styles cg and cgi can be compressed to the ring thickness, if necessary. References to current best practice documents, such as asme pcc1. Dimensions of spiral wound gaskets class 150, asme b16. Internal pressure acts upon the faces of the v, forcing the gasket to seal against the flange faces.
The aspcg style uses an 18 external ring which accurately centers the gasket on the flange face and provides additional radial strength to prevent gasket blowout and act as a compression stop. With greater emphasis than ever before placed on joint tightness, more attention is focused toward variables associated with the integrity of the bolted gasketed joint. Several commercially available spiral wound gaskets will be analyzed and compared to the new b16. Having a portion of the gasket inside the pipe can be detrimental to the process, equipment, flow rates and the life expectancy of the gasket. This type of gasket should be used only as a maintenance repair item. Use the filters to narrow down your product selection, or you can also view the products by product type, industry or application. A vshaped crown centered in the metal strip acts as a spring, giving the gasket greater resiliency under varying conditions. Referring to the title failure analysis of pipe joint gaskets spiral wound, this gasket is suitable for use in piping systems spiral wound gasket designs are typically used in. This gasket are manufactured by winding of metallic strip, preformed v, alternated with inorganic fillers, can be made on specific standards asme, api, uni en or customers design. Flexseal industrial is a full line gasket and oring distributor. Spiral wound gaskets have become extremely popular due to the wide variety of available styles and sizes. Available styles of spiral wound gaskets 4 style w style w spiral wound gaskets are comprised of just the metallic windings and the soft, nonmetallic filler.
In the case of spiral wound gaskets, if the inner ring andor windings are not secured between the flange faces, radial. A vshaped crown centered in the metal strip acts as a spring, giving the gasket greater resiliency under varying. 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. Because of the robust design of the spiral wound gasket it is simple to install without damage although care should be.
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