Spiral wound gasket can be used for sealing flange joints, manhole and handhold covers tube covers, boilers, heat exchangers, pressure vessels,pumps, compressors and valves in industries such as petrochemical, pharmaceutical,shipbuilding and food processing, in power industries and nuclear power stations. Online you can buy several products, such as from various top brands of india. 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 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. The outer guide ring simplifies assembly and prevents blowout of the gasket. Because they offer qualities of both strength and flexibility even when exposed to harsh conditions, spiral wound gaskets have become a popular. Spiral wound gaskets can be reinforced by an outer centering ring. Fusionner pdf combiner en ligne vos fichiers pdf gratuitement. Tolerance outside diameter for nps 1 2 through nps 8 is 0. Dave engineers manufactures spiral wound gaskets in full range of metal alloys and fillers. Therefore they are very suitable for applications featuring heavy operating conditions. The metallic strip that holds the filler has a standardized thickness of 0.
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. Spiral wound gaskets, china spiral wound gasket manufacturer. 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 are designed to maintain a seal in flanged joints under severe fluctuations of temperature and pressure. We provide fast service on special sizes and materials of spiral wound gaskets. The construction is capable of infinite variety as the number of. The metal strip holds the filler, providing the gasket with mechanical resistance and resilience. Data specification sheet novus spiral wound gaskets.
Spiral wound gaskets are robust and simple to install. Dims spiral wound gaskets en 15142 for flanges according to din en 10921. Spiral wound gaskets are suitable for use across a wide gasket stress range. 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. Technical catalogue spiral wound gaskets comdiflex. Dimensions are in millimeters unless otherwise indicated. Because of the robust design of the spiral wound gasket, it is. Suitable for use across a wide pressure range and is therefore virtually universally applicable. Please contact us for more information on spiral wound gaskets. Data specification sheet novus spiral wound gaskets properties spiral wound gaskets are suitable for use across a wide gasket stress range. Image shows a spiral wound gasket with inner and outer ring.
Please note this refers to the thickness of the windings and the filler, not any inner. Spiral wound gasket basic characteristic and styles. 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 gasket is most widely used for sealing.
Metallic gaskets featuring thermapur hydraulic components. Spiralwound gaskets comprise a mix of metallic and filler material. The reason i answered true is because all standard size spiral wound gaskets are typically manufactured to asme b16. Spiral wound gaskets mississauga product line and information, dimensional and technical data. The sri swgs are manufactured with an inner, outer guide ring, sealing element winding materialss316l, ss321 and the soft fillers graphite, ptfe, leadertherm. The spiral wound gaskets are used instead of plastic gaskets asbestos free, graphite, etc. This study describes the research and evaluation of the gaskets used in pipe systems.
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 gaskets flex gasket part numbers for 347ss windings graphite filler carbon steel outer ring 7635 ronson road san diego, california 92111 ph. The spz spiral wound gasket can withstand severe operation conditions, as the ptfe sealing zone is protected by areas with graphite filler. The sealing element is formed by winding two materials one for sealing, one for resilience into thin vshaped spirals. The cg spiral wound is a good general purpose gasket and is suitable for use with flatface and raisedface flanges. Spiral wound gasket manufacturers keith payne products ltd. Spiral wound gaskets must contain an appropriate filler between the winding for the application. Wound gaskets are made and assembled in accordance with asme b16. Spiral wound gaskets are used in refinery, petrochemical, chemical, steam lines and process industries, where they have many advantages over older types of gaskets. They are also often used in pump applications with recessed.
The most common materials used for metallic strips are. Spiral wound gasket, spiral gaskets, wound gaskets, swg gaskets. Combines pdf files, views them in a browser and downloads. 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. Gasket style comparison the following chart lists different manufacturers specific coding for spiral wound gasket styles. Style aspcg spiral wound gaskets are ideal for high temperature and high pressure applications. This makes it particularly suitable for low or fluctuating bolt loads. Dave engineers manufactures strictly to the standards by asme b16. Spiral wound gaskets and other types of nonsoft gaskets provide preferred sealing options where higher temperatures and higher pressures are factors. Available gasket materials metal winding strip stainless steel carbon steel filler material flexicarb flexible graphite flexite super non. Also included in the publication of this standard are grooved metal gaskets with. Spiral wound gaskets of nonstandard dimensions and shapes, and larger diameters are available on request. Spiral wound gaskets can be used to seal fluid pressures up to 400 bar and from cryogenic temperatures up to deg c. The spiral wound gaskets consist of a vshaped strip of metal which is wound into a spiral.
Leader spiral wound gaskets leaderkam kammprofile gaskets leader rtj ring type joints leader clipperlon leader elastagraph leader compressed fiber sheets overview gaskets. 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. Fusionner, fractionner, extraire des pages, faire pivoter et melangez vos fichiers pdf. Spiral wound gasket flexitallic pdf catalogs technical. Dimensions spiral wound gaskets according to en 15142 for. 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. Danloc group stocks standard spiral wound gaskets with and without stainless steel inner rings. Flexitallic also supplies through macroseal distributorship flexpro gaskets covered serrated metal core gaskets, metal jacketed gaskets, ring type joints, and mrgs metal reinforced gaskets. Dimensions of spiral wound gaskets according to en 15142 for use with din flanges en 10921. 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 side. Spiral wound gaskets without centering and inner ring spiral wound gaskets have proven to be the most reliable sealing element for use in difficult, critical and arduous duties. Associated gaskets can provide spiral wound gaskets in nominal thicknesses of 1. The gasketsealing element consists of a preformed metallic winding strip with layers of a softer, more compressible sealing material which, during compression, is. Ptfe virgin white applications spiral wound gaskets are widely used in the petrochemical.
Spiral wound gaskets flexitallic metal gaskets sealing. Leader spiral wound gasket type sri the sealing element with inner and outer guide ring. Spiral wound gasket are special semimetallic gaskets of great resilience. Ring type joints, camprofile gaskets, mrg gaskets, spiral wound gaskets, metallic rings, semimetallic corrugated flange gaskets. When looking for a high pressure and high temperature gasket sprial wound gaskets are the industries standard.
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. 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. Table of dimensions and tolerances of spiral wound gaskets. Normally the metal layers are separated by a filler, usually asbestos. The spiral wound gasket was developed in the early 20th century to meet the increasingly demanding conditions encountered in oil refinery operations. 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.
The company has modern production facilities and well equiped laboratory with facilities like compression and recovery testing, leaking testing etc. The professional manufacturer of seal packing,offer graphite packing,carbon packing aramid packing,ptfe packing,graphite sheet,ptfe sheet,cut gasket,spiral wound gasket and so on. Cut and sheet gaskets nonasbestos gaskets flexible graphite gaskets elastomers flat ring gaskets to asme. Spiral wound gaskets are manufactured by spirally winding a vshaped metal strip and a strip of nonmetallic filler material. In this article we will discuss the spiral wound gasket basic characteristic and styles. 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. Clearly stamped in either the outerinner ring is the size, materials constructed from, windings material and filler. Spiral wound gasket, spiral gaskets, wound gaskets, swg. The primary purpose for this development was the increasingly severe temperatures and pressures used by u.
A spiral wound gaskets is categorized as semimetallic gasket that is typically used for high pressure applications. Ring joint gaskets,spiral wound gaskets,double jacketed. Nov 03, 2015 the reason i answered true is because all standard size spiral wound gaskets are typically manufactured to asme b16. This type of gasket is commonly used with flange surface finishes created using mirage flange facing machines, which is why we decided to put together this simple. Metaflex gaskets are gasket profiles manufactured from vshaped metal strips, spirally wound with an inlay of filler between each turn. At the start and conclusion of the spiral form, several continuous turns of the metallic windings are securely welded together. For price price list of gaskets spiral wound gaskets pri.
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