Style ls gaskets have the inherent strength, resiliency and blowout resistance of spiral wound gaskets. Its uses are similar to the spiral wound gasket profile s. Double colour coding for spiral wound gaskets as per asme b16. This part of iso 7005 establishes a base specification for pipe flanges suitable for general purpose and industrial applications including, but not limited to, chemical process industries, electric power generating industries, petroleum and natural gas industries. Spiral wound gaskets flex gasket part numbers for 347ss windings graphite filler carbon steel outer ring 7635 ronson road san diego, california 92111 ph. The vitaflex and flexseal spiralwound gasket concept can solve a large. Table of dimensions and tolerances of spiral wound gaskets. Our standard production program comprises a range of spiral wound gaskets with inner diameters of 10 mm to 3000 mm and a nominal thickness of 3. Normally the metal layers are separated by a filler, usually asbestos. 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. Chlorine institute pamphlet 95 gaskets for chlorine service.
An electrical conductor and highly noble so promotes corrosion. 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. No other company knows more about spiral wound gaskets, in fact, flexitallic invented the spiral wound gasket. In this article we will discuss the spiral wound gasket basic characteristic and styles. Semi metallic gaskets are made by combining soft materials such as fillers, facings. Styles cg and cgi can be compressed to the ring thickness, if necessary. Mica is sometimes chosen in place of graphite however it exhibits very poor sealing characteristics. Spiral wound gasket with outer 2nd inner lngi style cross section swg swg 1808 1806 1804 1803 ir or oir. Pdf spiralwound gaskets swg are used extensively as primary seals in critical joint applications of plant process piping systems in all industries. Ptfe virgin white applications spiral wound gaskets are widely used in the.
The spiral wound gaskets consist of a vshaped strip of metal which is wound into a spiral. 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. Spiral wound gaskets, class 150, nps 12 nps 24, asme b16. By combining different winding materials and metals the gasket can. 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. However, from a sealing technology point of view, at diameters above 1100 mm is recommended the use of grooved gaskets. Spiral wound gaskets are made and assembled in accordance with asme b16. The most common semimetallic gaskets are spiral wound gaskets. 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. Outer ring it is made of carbon steel and painted in order to avoid corrosion although it. Edmonton, b 8700 v 7803989 27 spiral wound gaskets spiral wound gaskets are designed for asme b16. We manufacture spiral wound gaskets in sizes from dn 10 to a diameter of 1200 mm. We combine excellent technical knowledge with customer and demandoriented service.
Maestral offers a multiscale scientific approach combining tests. Custom filler, winding strip, guide ring and inner ring materials are available upon request. The metal is intended to offer strength and resilience while the nonmetallic components provide conformability and sealabililty. Spiral wound gaskets are available for classes 150 to 2500. Spiral wound gaskets style 304 with outer ring metallic thickness standard thickness of the metallic strip is 0. When flexitallic invented the spiral wound gasket in 1912, there was nothing like it. We would like to show you a description here but the site wont allow us. Spiral wound gasket basic characteristic and styles.
It places responsibility for the selection of a flange series with the purchaser. Designed solutions accommodate a variety of conditions by combining various metals and filler materials. Technical catalogue spiral wound gaskets comdiflex. The primary purpose for this development was the increasingly severe temperatures and pressures used by u. Teadit metalflex spiral wound gaskets styles 9, 9m, 9mcmp, 9rj, 9mrj, 9mxhr the construction of this gasket is a circular metal winding with an outer centering ring. Required gasket compression for spiral wound gaskets spiral wound gaskets with internal or external rings, i.
Dims spiral wound gaskets en 15142 for flanges according to din en 10921. The objective is to make available in india, spiral wound gaskets manufactured to the most exacting international standards such as api 601, asme b16. Dimensions spiral wound gaskets according to en 15142 for. Spiral wound graphite gaskets will tolerate certain irregularities and flange or sealing face deformations more than most other gasket types. Klinger maxiflex spiral wound gaskets klinger australia. Type swio spiral wound gasket with centring ring and inner ring. The sealing element is made of alternating plies of a specified metal and soft sealing material. Operational conditions such as temperature, pressure, and media will dictate selection of the proper spiral wound gasket for your application. The most widely used composite type gasket is a spiral wound gasket. They are also often used in pump applications with recessed flanges.
Type swi spiral wound gasket with inner support ring. It is suitable for wide range of pressure and temperature class. Gaskets for pipe flanges which includes spiral wound gaskets and. Flexitallic style cg and cgi spiral wound gaskets can be asme b16. Leadercam camprofile fr this profile has a section that performs as the guide ring in a sr spiral wound gasket. These types of gasket are used in higherpressure applications. All cg and cgi gaskets for these standard flanges are 4. Profiles type sw spiral wound gasket without inner and outer ring for force shunt and groove and spring applications. Garlock flexseal spiral wound gaskets are ideal for. Spiral wound gaskets of nonstandard dimensions and shapes, and larger diameters are available on request.
It is designed for tongue and groove and malefemale flanges. Because of this problem with pure ptfe gasket material, it is generally accepted that a filled ptfe gasket material will have superior performance. The material for the metallic strip conforms to aisi 3043163221. Pdf generic issues effecting spiralwound gasket performance. These gaskets can be used in flanges with larger surface roughnesses, but in this. Gasket standard types gaskets without centering and inner ring type. 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 gasket inwards buckling 119 figure 54. Spiral wound gaskets have the ability to recover under the action of fluctuating loads caused by process fluid pressure and temperature changes, flange rotation, bolt relaxation and creep. In recent years, garlock metallic gaskets has introduced some of the industrys most innovative production methods and products. One of the main applications is steam sealing at high pressures or temperatures superheated steam. The primary purpose for this development was the increasingly severe temperatures and pressures used.
The spiral wound gasket outer centring ring provides the following benefits. Spiral wound gaskets can be fabricated of any metal which is available in thin strip and which can be welded. Inner rings should be used with spiral wound gaskets on maleandfemale flanges, such as those found in heatexchanger, shell, channel, and coverflange joints. The change gasket design combines aspects of both a traditional spiral wound gasket and a kammprofile, improving upon both using.
The od normally extends to the surface of the bolts. The gaskets listed in table 31 have found user acceptance in dry chlorine service for the service class indicated. Introducing the spiral wound gasket that reinvents the category. 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. These gaskets are widely used and cover a large array of applications. Spiral wound gaskets are manufactured in many different material combinations as well as a wide range of dimensions and shapes. Gasket handbook 1st edition fluid sealing association. Their ability to be made from almost any metal means they can be produced to withstand almost any corrosive medium and temperature from cryogenic to over 0c. Gasket handbook 1 edition fluid sealing association. Clearly stamped in either the outerinner ring is the size, materials constructed from, windings material and filler. Spiral wound gaskets a visual guide associated gaskets spiral wound gaskets are the most common type of gasket used for sealing in high pressure environments.