The gasket sealing element consists of a preformed metallic winding strip with layers of a softer, more compressible sealing material which, during compression, is. Spiral wound gaskets in todays changing landscape, there are more options than ever in the power generation industry. Spiral wound gaskets are manufactured by spirally winding a vshaped metal strip and a strip of nonmetallic filler material. Spiral wound gaskets ingi swg 1808 basic type o ingi swg. 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. Spiral wound gaskets flex gasket part numbers for 347ss windings graphite filler carbon steel outer ring 7635 ronson road san diego, california 92111 ph. This will not damage the gasket or affect the sealing performance and the ring is provided as a compression limiting stop. Technical catalogue spiral wound gaskets comdiflex. Fsaesa gasket installation procedures assuring joint integrity and maximum safety this laminated, pocketsized document provides guidance to maintenance operators, engineers, and fitters to ensure successful gasket installation and assembly of bolted flange connections. Style cg spiral wound gaskets utilize an external ring which accurately centers the gasket on flange faces, and provides radial strength to prevent gasket blowout as well as a compression stop. Properties and application parameters shown in this manual are presented in good faith but no warranty is expressed or implied. One material used in the sealing element is usually a metal and the other, referred to as a filler, which is a soft nonmetallic material, typically teflon. Spiraltec style w a winding only gasket, which is normally used on tongue and groove joints, male and female facings and groove to flat flange facings. Ring type joints, camprofile gaskets, mrg gaskets, spiral wound gaskets, metallic rings, semimetallic corrugated flange gaskets.
We manufacture spiral wound gaskets in sizes from dn 10 to a diameter of 1200 mm. The external ring accurately centers gasket on flange face. Many of which are related to a specific manufacturer. Spiral wound gaskets were tested on a pressure vessel with a 16 class of 300 rfwn flange. Our spiral wound gaskets are characterised by a high degree of precision. A spiral wound gasket may include a centering ring, an inner ring or both. Online you can buy several products, such as from various top brands of india. The tests involve 24 gaskets for inward buckling without leakage, an additional 19 gaskets for leakage. Gaskets are colour coded to help expedite the selection and identity of the gaskets you need. The primary purpose for this development was the increasingly severe temperatures and pressures used by u. The material for the metallic strip conforms to aisi 3043163221. Data specification sheet novus spiral wound gaskets special profiles in the event of a graphite filled spiral wound possibly causing an undesirable reaction between graphite and the medium to be sealed, or of a possible medium contamination, the problem can be solved by using a spiral wound gasket with a gtzone.
Indicates required fields your name your email your phone your company attach a file question or comment. 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. 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. Spiral wound gaskets are actually considered a semimetallic gasket style. Clearly stamped in either the outerinner ring is the size, materials constructed from, windings material and filler. The sealing element is formed by winding two materials one for sealing, one for resilience into thin vshaped spirals.
The tests involve 24 gaskets for inward buckling without. Solid outer ring spiral wound gaskets consist of a metal guide ring and sealing element. Failure to properly use gasket material could result in serious injury or death. Spiral wound gaskets in the power generation industry. Spiral wound gaskets are made of a preformed thin metallic strip combined with a soft sealing composite material, wound together under pressure to energise the sealing element to act like a spring when compressed between two flange faces.
Some other terms used to call out spiralwound gaskets include. Lamons gasket company offers spiral wound gaskets in a variety of densities, for use with pressure ranges of vacuum to 2500 psi flange ratings, and in a temperature range of cryogenic to 2000f. 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. Inward buckling of spiral wound gaskets has been identified as a potential problem.
The company has modern production facilities and well equiped laboratory with facilities like compression and recovery testing, leaking testing etc. The enormous high quality of our spiral wound gaskets is further achieved on account of the firstclass quality of the expanded graphite or ptfe. A spiral wound gaskets is categorized as semimetallic gasket that is typically used for high pressure applications. Ptfe virgin white applications spiral wound gaskets are widely used in the. A lowdensity spiral wound gasket is a better choice, where more filler material is wound within the sealing element, allowing the gasket to seal with less sealing stress. Spiral wound gaskets have an optimum flange surface finish between 125 to 250 aarh, with a maximum of 500 aarh. The vitaflex spiralwound gasket operates by the axial compression of the winding, which results in the plastic deformation of the filler material ptfe or.
Spiral wound gaskets combine the ease of sealing of a graphite, ptfe or mica filler with the strength afforded by a specially profiled metallic, springlike reinforcement. Dave engineers manufactures strictly to the standards by asme b16. This process of precise winding density control provides a gasket designed to meet your specified seating stress and assures consistent sealing of your most critical fluids. The engineered shape of the metal strip acts as a spring under load, resulting in a very resilient seal under varying conditions. Pdf file, ring joint catalog style r, style rx, style bx.
Outer ring it is made of carbon steel and painted in. Spiral wound gasket design selection spiral wound gaskets are available in a variety of styles to suit the particular flange facing being utilized on the flanges. The concept of spiral wound gasket construction was originated by flexitallic in 1912, inaugurating the beginning of a new era in safe, effective sealing. Garlock flexseal spiral wound gaskets are durable and easily installed and.
Spiral wound gaskets can be used to seal fluid pressures up to 400 bar and from cryogenic temperatures up to oc. 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. Learn about spiral wound gasket including dimensions and. Analysis of the compression behavior of spiral wound. Pdf spiralwound gaskets swg are used extensively as primary seals in critical joint applications. Spiral wound gaskets are suitable for use across a wide range gasket stress range. Spiral wound cataloggasket indetification, gasket selection, dimensional data.
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. This paper discusses those generic issues effecting gasket performance, identifies those actions. Pdf generic issues effecting spiralwound gasket performance. This makes it possible for a filling material band to be integrated during the winding of a profiled metal strip. 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. The enormous high quality of our spiralwound gaskets is further achieved on account of the firstclass quality of the expanded graphite or ptfe. The cg spiral wound is a good general purpose gasket and is suitable for use with flatface and raisedface flanges. Although its basic fundamental principle has changed little since its creation, the production techniques and materials that have been developed. Inner rings should be used with spiral wound gaskets on maleandfemale flanges, such as those found in heatexchanger, shell, channel, and coverflange joints.
Mar 03, 2016 founded in 1987 in chennai, india goodrich gasket pvt. Gasket style comparison the following chart lists different manufacturers specific coding for spiral wound gasket styles. However, selecting the right gasket for a leakfree seal requires much more thought. However, from a sealing technology point of view, at diameters above 1100 mm is recommended the use of grooved gaskets. Spiral wound gaskets with inner and outer supporting rings for welded flanges with raised face and specified via pn and class, data sheet 923925 edition. Spiral wound gaskets are made and assembled in accordance with asme b16. For high temperature and pressure the spiral wound gaskets are ideal, and at aspseal we manufacture these with high precision and with quality materials. Gasket handbook 1st edition fluid sealing association. On the buckling of spiral wound gaskets request pdf. Indicates required fields your name your email your. This process of precise winding density control provides a gasket designed to.
Spiral wound gasket inwards buckling 119 figure 54. Introduction first and foremost the concept of spiral wound gasket construction was originated by flexitallic in 1912, inaugurating the beginning of a new era in safe, effective sealing. Spiral wound gaskets style 304 with outer ring metallic thickness standard thickness of the metallic strip is 0. Spiral wound gaskets suitable for fluctuations in pressure and temperature. Spiral wound gaskets can be reinforced by an outer centering ring andor inner retaining ring. Dimensional data for the basic styles style cg, style cgi, style r and style rir are detailed on respective tables. Spiral wound gaskets first and foremost the concept of spiral wound gasket construction was originated by flexitallic in 1912, starting a new era in safe, effective sealing. Styles cg and cgi can be compressed to the ring thickness, if necessary. 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 of nonstandard dimensions and shapes, and larger diameters are available on request. Posted by jim lingenfelder on march 8, 2017 in todays changing landscape, there are more options than ever in the power generation industry. Data specification sheet novus spiral wound gaskets. Fluid sealing association representing manufacturers of.
The spiral wound components of style d are identical to those of style w and in addition have a wire loop welded to the outer periphery of the gasket, sized so as to fit over diametrically apposite bolts, for proper centering of the spiral wound component on the gasket seating surface. The outer guide ring simplifies assembly and prevents blowout of gasket. The centering also provides additional radial strength to prevent gasket blowout and acts as a compression limiter. Gaskets spiral wound gaskets the industrial resource. With greater emphasis than ever before placed on joint tightness, more attention is focused toward variables associated with the integrity of the bolted gasketed. Spiral wound gasket design selection spiraltec gasket co. Semimetallic gasket spiral wounds, because of their construction are sometimes referred to as semimetallic gaskets. Our spiralwound gaskets are characterised by a high degree of precision. For a free download of this publication, click here.
Utilizes an external ring which accurately centers gasket on flange face. Spiral wound gaskets utilizes an external ring where the id is grooved to insert a sealing element. Spiral wound the spiral wound gaskets are used to replace the plastic gaskets asbestos free or graphite when their limits of application are exceeded. Dave engineers manufactures spiral wound gaskets in full range of metal alloys and fillers. The metal strip provides outstanding resilience, while the flexible sealing filler guarantees excellent sealing. Required gasket compression for spiral wound gaskets spiral wound gaskets with internal or external rings, i.
The metal strip holds the filler, providing the gasket with mechanical resistance and resilience. Founded in 1987 in chennai, india goodrich gasket pvt. Spiral wound gaskets are robust and simple to install. Analysis of the compression behavior of spiral wound gaskets. This profile is normally used in raised and flat faced flanged.
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