Spiral wound gasket design, materials and application. Our spiral wound gaskets are made of a preformed metallic strip and a soft filler material ptfe, or flexible graphite, wound together under pressure. Spiral wound gaskets are designed to meet these demanding conditions. Grafoil flexible graphite is a distinctive material with the essential characteristics of graphite plus some unique properties which make it a valuable material for packings and gaskets. Metallic gaskets featuring thermapur solid gaskets. Normally the metal layers are separated by a filler, usually asbestos. Style aspcg spiral wound gaskets are ideal for high temperature and high pressure applications. Clearly stamped in either the outerinner ring is the size, materials constructed from, windings material and filler.
Apr 14, 2018 in this article we will discuss the spiral wound gasket basic characteristic and styles. Spiral wound gaskets are made and assembled in accordance with asme b16. Looking for flexitallic 316ss and flexible graphite spiral wound metal gasket, 418 outside dia. The flexitallic spiral wound gasket is the precisionengineered solution for flanged joints, heat exchangers, boiler handholes, manholes and other high temperature, high pressure applicationsproviding resistance to virtually every known corrosive and toxic element. As a result, its resistance to corrosion, aggressive chemicals, heat and fire make it a critical sealing solution for a variety of applications. Spiral wound gaskets are manufactured in dimensions from 14 to 96 and thickness from 18 to 38 generally, gaskets thickness is 0. Online you can buy several products, such as from various top brands of india. The metal strip, in 304, or 316 stainless steel, holds the filler resulting in excellent mechanical resistance, resilience, and recovery.
It is an ideal facing material for flat gaskets it contains no binders or resins. As a result, its resistance to corrosion, aggressive chemicals, heat and fire make it a. It is designed for tongue and groove and malefemale flanges. Grafoil and flexible graphite gaskets grafoil gaskets.
Grafoil flexible graphite is a superior performing packing and gasket material. Graftech grafoil products including sheet and tape. However, from a sealing technology point of view, at diameters above 1100 mm is recommended the use of grooved gaskets. Normally spiral wound gaskets are made as per ansib 16. Spiral wound gasketsmade with an alternating combination of formed metal wire and soft filler materialsform a very effective seal when compressed between two flanges. It includes guidance to plant engineers on specifying gaskets. This limits the performance and application range of most sealing products and offers gaskets with superior high. Dimensions of spiral wound gaskets class 150, asme b16. Table of dimensions and tolerances of spiral wound gaskets. View all products from flexitallic the market leader in the manufacture and supply of static sealing solutions, delivering high quality industrial gaskets on a. Table xxiv spiral wound and double jacketed grafoil gaskets. Its uses are similar to the spiral wound gasket profile s. If you will be handling the sheet often it is recommened to reduce breakage. Although its basic fundamental principle has changed little since its creation, the production techniques and materials that have been developed.
Spiral wound gasket sizes designed for asme ansi b 16. The best thing to happen to the sealing and gasket industry over the last 10 years has got to be grafoil flexible graphiteand we handle all types including. Feature an external ring that centers the gasket on the flange face. A vshaped crown centered in the metal strip acts as a spring, giving gaskets greater resiliency. The outer metallic ring of spiral wound gaskets is known as retaining ring or centering ring or outer guide ring. The spiral wound gaskets consist of a vshaped strip of metal which is wound into a spiral. Spirally wound gaskets known in the art generally consist of alternate layers of a thin gauge metal strip, such as stainless steel, and a thin strip of a soft, nonmetallic filler material which together are wound in a spiral to form an annular ring, as is a. Pressure class 900, nominal pipe sizes 24 and larger, pressure class 1500 from nominal pipe sizes 12 and larger, pressure class 2500 from nominal pipe sizes 4 and larger and all ptfe filled gaskets. Spiral wound gaskets spiral wound gaskets are designed for asme b16. As its name indicates, flexible graphite is flexible and conformable, an ideal property as a gasket material. 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 available for classes 150 to 2500. The best thing to happen to the sealing and gasket industry over the last 10 years has got to be grafoilflexible graphiteand we handle all types including.
Ordering flexitallic gaskets for special flange designs. This study describes the research and evaluation of the gaskets used in pipe systems. In this article we will discuss the spiral wound gasket basic characteristic and styles. Spiral wound gaskets properties and application spiral wound gaskets are special semimetallic gaskets of great resilience, there fore they are very suitable for applications featuring heavy operating conditions. Ptfe virgin white applications spiral wound gaskets are widely used in the. Metallic gasket division of the fluid sealing association.
We manufacture spiral wound gaskets in sizes from dn 10 to a diameter of 1200 mm. We offer superior customer service and are committed to meeting the needs of all your industrial sealing applications. This invention relates generally to seals or gaskets, and more particularly to a spirally wound gasket. Grafoil fle xible graphite gaskets provide superior performance in high temperature sealing applications. Welcome to wholesale the best customized gasket at low price here. The most popular combination in this type of gaskets is s. The od normally extends to the surface of the bolts. Spiral winding inner ring d3 spiral wound gaskets manufactured in accordance with asme b16. At goodrich gasket, we manufacture spiral wound gaskets spw gaskets by spirally winding a preformed metal strip and filler on the outer periphery of metal winding mandrels whose outside diameter form the inner diameter of the gasket and superposed metal and nonmetallic windings are continually wound until the required outer diameter is attained.
Edmonton, b 8700 v 7803989 27 spiral wound gaskets spiral wound gaskets are designed for asme b16. Us9285062b2 us12255,248 us25524808a us9285062b2 us 9285062 b2 us9285062 b2 us 9285062b2 us 25524808 a us25524808 a us 25524808a us 9285062 b2 us9285062 b2 us 9285062b2 authority us united states prior art keywords spiral gasket inner ring axial width wound prior art date 20071102 legal status the legal status is an assumption and is not a. 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. A spiral wound gaskets is categorized as semimetallic gasket that is typically used for high pressure applications. Corrugated metal gaskets cmg flexseal spiral wound. Grafoil homogeneous standard industrial grade flexible graphite sheet with an oxidationcorrosion inhibitor and typically 98% carbon content. Spiral wound gaskets are manufactured by spirally winding a vshaped metal strip and a strip of nonmetallic filler material. Standard properties of manufactured graphite include thermal. Custom filler, winding strip, guide ring and inner ring materials are available upon request. Lamons spiral wound gaskets are available in a variety of styles to suit the particular flange facing being utilized on the flanges. The sealing element is formed by winding two materials one for sealing, one for resilience into thin vshaped spirals. Kaxite professional spiral wound gasket, ring joint gaskets,manufacturers and suppliers in china, providing bulk products for sale.
Lamons kammprofile gaskets are recognized as a problem solver for heat exchangers, large vessels, and equipment that experience excessive movement due to thermal expansion. It is also called graphite foil, or referred to by a brand name such as grafoil. Spiral wound gaskets of nonstandard dimensions and shapes, and larger diameters are available on request. 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. Resiliency and strength make spiral wound gaskets an ideal choice under a variety of conditions and applications. Kammprofile gaskets spiral wound gaskets with inner ring solid metal gaskets low pressure gaskets include. Technical catalogue spiral wound gaskets comdiflex. Ghr is made with gtb and contains 98% graphite minimum, 100 ppm leachable chlorides maximum. There are different grades of grafoil available including automotive, industrial and nuclear grades.
In various embodiments, bimetallic spiral wound gaskets are used in combination with annular compression rings, on the inner andor outer periphery of the winding. Download pdf anillosgrafoil spiral wound gaskets spiral wound or flexitalic we manufacture spiral wound gaskets under international standards api, asme, din, and special measures, providing top quality and delivery. Spiral wound gasket basic characteristic and styles. It is the first fluid sealing material made exclusively from natural graphite flake. Flexseal industrial is a full line gasket and oring distributor. Industrial metal and soft material, solid metal, jacketed metal, spiral wound, camprofile and corrugated metal gaskets are also available.
It has excellent resistance to corrosion against a wide variety of acids, alkalis and salt solutions, organic compounds, and heat transfer fluids, even at high temperatures. Flexible graphite is manufactured from mineral graphite expandable flake graphite. Metalreinforced spiralwound ring gaskets meet ansi b16. Grafoilflexible graphite pump packing valve packing injectable packing amerilon gasket materials spiral wound gaskets high temperature seals orings hydraulic seals tadpole tapes silica tapes moldedmachined ptfe extruded ptfe vpacking radial lip seals expansion joints ptfe lubricants pump seals packing tools shop by. A vshaped crown centered in the metal strip acts as a. Spiral wound gaskets are being successfully used in a wide range of applications. Flexible graphite grafoil gaskets roll products are manufactured from pure flexible graphite containing no binders or fillers.
Grafoil flexible graphite gaskets high temperature sealing. Our experience in designing this kind of gaskets allows us to adapt your manufacturing parameters materials, density, components dimensions, etc. For price price list of gaskets spiral wound gaskets pri. Leadercam camprofile fr this profile has a section that performs as the guide ring in a sr spiral wound gasket. Its leachable chloride content is less than 50 ppm.
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, metal gaskets made of spiral wrapped windings with sealing fillers of ptfe, flexible graphite, non asbestos, grafoil or mica gaskets. They are also often used in pump applications with recessed. Secondary services include gasket design, support and consulting services. Spiralwound gaskets products and services spiral wound gaskets full line of stud bolts and fastener products elastagraph molded graphite and metal flange gaskets dynagraph flexible graphite technology dynagraph he heat exchanger gaskets graftech grafoil products including sheet and tape.
1360 786 1080 700 443 1563 1220 566 1482 899 455 980 224 1190 1597 1082 1470 270 1454 1422 159 223 1456 1568 1270 808 775 42 786 536 1100 793 426 1397 1128 1301 570 279 808 68 19 148