The completed gasket is fitted into a steel ring of specific thickness. Spiral wound gaskets shall be fitted with an inner metal ring i. Lamons spiral wound gaskets are available in a variety of styles to suit the particular flange facing being utilized on the flanges. The spiral wound design is most popular because it makes a good all round gasket. The change gasket design combines aspects of both a traditional spiral wound gasket and a kammprofile, improving upon both using. Custom filler, winding strip, guide ring and inner ring materials are available upon request. Besides the multiple sealing actions of the metal edges, the filler compresses under the bolt load to make another barrier against leakage.
Style ls gaskets have the inherent strength, resiliency and blowout resistance of spiral wound gaskets, yet require low bolt load for seating. 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. Table of dimensions and tolerances of spiral wound gaskets. Styles cg and cgi can be compressed to the ring thickness, if necessary. The gasket sealing element consists of a preformed metallic winding strip with layers of a softer, more compressible sealing material which, during compression, is. The spz spiral wound gasket can withstand severe operation conditions, as the ptfe sealing zone is protected by areas with graphite filler. Learn about spiral wound gasket including dimensions and. Spiral wound gaskets, class 150, nps 12 nps 24, asme b16. Spiral wound gasket spiral wound gasket is made of alternate piles of vpreformed hoop and soft filler that are tightly and spirally wound together. The spiral wound gasket with center ring is for use w ith flat face and raised face flanges, this gasket features increased compressive force for blowout prevention. It is suitable for wide range of pressure and temperature class. Please contact us for more information on spiral wound gaskets.
Outer guide ring is fitted to centralise the gasket between the bolts and to act as a compression limiter. 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. It is created by winding alternating strips of metal and filler material. This minimizes the risk of material creep through overtightening. 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. Required gasket compression for spiral wound gaskets spiral wound gaskets with internal or external rings, i. Because of the graphite filler, gasket is specified or high pressuretemperature service or where corrosive or toxic media are present. To further improve the pressure rating of the spiral wound gasket, a steel ring may be added to the inside. Spiral wound gaskets can be fabricated of any metal which is available in thin strip and which can be welded. Because of the robust design of the spiral wound gasket, it is. Introducing the spiral wound gasket that reinvents the category. Its uses are similar to the spiral wound gasket profile s.
Temperature range for all products on this page is. The spiral wound gasket is semimetallic, comprising of a spirally wound v shaped stainless steel strip and a nonmetallic filler material, such as graphite or ptfe. A spiral wound gasket may include a centering ring, an inner ring or both. The od normally extends to the surface of the bolts. Garlock metallic gaskets, a division of garlock, manufactures spiral wound, serrated metal, metal clad, solid metal and metal core gaskets at its facility in houston, texas. When flexitallic invented the spiral wound gasket in 1912, there was nothing like it. Spiral wound gaskets of nonstandard dimensions and shapes, and larger diameters are available on request.
The standard spiral wound gasket type consisting of a wound component fitted with an outer centring ring. Inner ring recommended for all gaskets exceeding class ansi 600lbs. Profiles type sw spiral wound gasket without inner and outer ring for force shunt and groove and spring applications. Style ri spiral wound gasket with inner ring is designed specifically for male and female flanges, the inner ring providing radial confinement to prevent blowout of the spiral element. Phelps style 9001 is a spiral wound metal gasket for lmf large male female flanges, and is only available for asme 16. The outer centering ring holds the gasket centrally within the bolt circle and inner ring improves.
Outer ring it is made of carbon steel and painted in. Flexseal industrial is a full line gasket and oring distributor. Spiral wound gaskets flexitallic metal gaskets sealing. Style aspcg spiral wound gaskets are ideal for high temperature and high pressure applications. One of the main applications is steam sealing at high pressures or temperatures superheated steam. Inner and outer ring type cgl an inner ring is added to the basic type gasket with outer ring, inner ring protects the gasket from protrusion and deformation during tightening. Gaskets basics, types, working principle, calculation of. Spiral wound gaskets flexitallic equals gasket material. Used as a guide for location of gasket between the bolts. 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. In a gasket joint, we do the experimental validation with the help of fuji paper test. Data specification sheet novus spiral wound gaskets properties spiral wound gaskets are suitable for use across a wide gasket stress range. Technical catalogue spiral wound gaskets comdiflex.
Spetospir swzd gasket is a two zones gasket applied as antioxidation style for gaskets working in temperatures above 500c in the zone exposed to medium graphite, outside mica, or as firesafe style of the ptfe filled spiral wound gasket, in such a case inner filler ptfe, outer filler graphite. Style r ring type joints are manufactured in both oval and octagonal configurations. Dimensions of spiral wound gaskets class 150, asme b16. It can adjust for temperature changes, shock, and vibration, and can be used at fairly high temperatures and pressures. Spiral wound gaskets are available for classes 150 to 2500. Spiralwound gaskets are made of a preformed metallic strip and a soft filler material ptfe or graphite, wound together under pressure, and optionally with an inner andor outer guide ring. Spiral wound graphite gaskets will tolerate certain irregularities and flange or sealing face deformations more than most other gasket types. Inward buckling of spiral wound gaskets has been identified as a potential problem. 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. Solid outer ring spiral wound gaskets consist of a metal guide ring and sealing element.
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 metallic strip that holds the filler has a standardized thickness of 0. They are manufactured with high purity flexible graphite, and ptfe. Inner rings should be used with spiral wound gaskets on maleandfemale flanges, such as those found in heatexchanger, shell, channel, and coverflange joints. Dimensions are in millimeters unless otherwise indicated. Lamons kammprofile gaskets are recognized as a problem solver for heat exchangers, large vessels, and equipment that experience excessive movement due to thermal expansion. 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. Sealing element is formed by winding a metal hoop with a specified filler material into a. Class 900 nps 24 to 48 class 1500 nps 12 to nps 24 class 2500 nps 4 to nps 12. Spiral wound gasket is composed of a steel outer ring, a spiral wound sealing strip filler and a special steel inner ring. 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. For price price list of gaskets spiral wound gaskets pri. Online you can buy several products, such as from various top brands of india. All cg and cgi gaskets for these standard flanges are 4.
Spiral wound gaskets can be used in a wide variety of media, for example ph ranges varying from 0 14. Spiral wound gaskets style 304 with outer ring metallic thickness standard thickness of the metallic strip is 0. Data specification sheet novus spiral wound gaskets. Spiral wound gasket style cg with internal ring for an additional compression limiting stop, with flexible graphite filler material. This will not damage the gasket or affect the sealing performance and the ring is provided as a compression limiting stop. The inner ring provides radial support for the gasket on the id to help prevent buckling or imploding whilst also serving as an additional along with the outer ring compression limiter to prevent the spiral wound component from being overly crushed. In recent years, garlock metallic gaskets has introduced some of the industrys most innovative production methods and products. It is designed for tongue and groove and malefemale flanges.
The most widely used composite type gasket is a spiral wound gasket. We offer superior customer service and are committed to meeting the needs of all. The metal strip holds the filler, resulting in excellent. 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. Leader spiral wound gasket type sri 316316lp316 din 7 items.
The metal strip provides outstanding resilience, while the flexible sealing filler guarantees excellent sealing. The sealing element is made of alternating plies of a specified metal and soft sealing material. Leader spiral wound gasket type sri 316l316lc316l ansi 76 items. Max nmm 50 50 180 150 95 80 90 graphite ptfe non asbestos rf1 gasket only ir gasket with inner ring sg gasket with guide ring. Spiral wound gasket basic characteristic and styles. When ordering please specify example gasket style nominal pipe size nps pressure rating gasket standard winding materials outer ring material inner ring material flexitallic style cgi spiral wound gasket 4 class 900 asme b16. Both sides confined gasket stress 20oc 122 110 min nmm2 opt. We do selection of the paper on this middle pressure. The only fishing knot you need the uni knot saltwater experience duration. 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. Type swi spiral wound gasket with inner support ring. Type swio spiral wound gasket with centring ring and inner ring.
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. Spiral wound gasket, spiral gaskets, wound gaskets, swg gaskets. The material for the metallic strip conforms to aisi 3043163221. Acts as compression limiter preventing overloading and over compression of the spiral wound sealing element. Edmonton, b 8700 v 7803989 27 spiral wound gaskets spiral wound gaskets are designed for asme b16. Suitable for use across wide pressure range and temperature.
The external ring accurately centers gasket on flange face. Also on the gasket, is a solid outer ring used for centering and controlling compression. The most common materials used for metallic strips are. According to the need of the mating flange, the gasket is provided with an outer ring, an inner ring or both outer and inner rings. 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. Spiral wound gaskets will not damage flange surfaces. The outer centering ring centers the gasket within the flange and acts as a compression limiter, while the inner ring provides additional radial strength. Tolerance outside diameter for nps 12 through nps 8 is 0. There are 6 to 7 types of fuji paper depends upon the pressure range. Spiral wound gaskets the spiral wound gaskets are used to replace the plastic gaskets asbestosfree or graphite when their limits of application are exceeded. Spiral wound gaskets can be reinforced with inner ring or outer ring or both.
The cg spiral wound is a good general purpose gasket and is suitable for use with flatface and raisedface flanges. Suitable for wide temperature range from extremely low to high. Ring type joints, camprofile gaskets, mrg gaskets, spiral wound gaskets, metallic rings, semimetallic corrugated flange gaskets. Flexitallic style cg and cgi spiral wound gaskets can be asme b16. The outer ring serves as a compression stop, antiblowout device. Compression of the sealing element is controlled by the use of the correct flange face configuration therefore, spiral wound gaskets are recommended for tongue and groove, male and female and flat to groove flanges only. 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. When the gasket is fitted into a flange and the bolt load is applied, flange closure is governed by the outer steel ring of the gasket. Style wri spiral wound gaskets swg are identical to style wr, with the addition of a solid steel inner ring. Image shows a spiral wound gasket with inner and outer ring.
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