spiral wound gasket specification pdf
ASME B16.5, Dimensions Non-Metallic Gaskets The inner ring is inert in terms of corrosion through contact with dissimilar materials, and the fire safe design also combines graphites sealing ability with mica on the ID and OD to prevent entrance of further corrosive conditions. Metal Industries is one of the oldest manufacturers,dealer,distributor,stockist & suppliers of Steel Flanges, which are manufactured using superior grade of steel like Stainless Steel 304,304L,310,310S,316,316L,317L. This type of gasket can be used in all pressures, from vacuum to the standard 2500 pressure class flange ratings. <> Dimensions are in millimeters unless otherwise indicated. Outside diameter tolerance for NPS 12 through NPS 8 is 0.8 mm; for NPS 10 through NPS 24, +1.5 mm, 0.8 mm. What is a Spiral Wound Gasket? The ISW3 Spiral Wound gasket is with outer metal ring. Tolerance in the Dimension of the Spiral Gasket Thickness tolerance is 0.13 mm measured across the metallic portion of the gasket, not including the filler, which may protrude slightly beyond the metal. HUvHZC]j=dspA 41%CU%[oL&`SS?@Jh\Z%W-rZH6oy0B{nrF@\>+(|)3)9 N!GGRX>E57n|Zz.`[W1*{.DC9aS\bRSZm)! Graphite as filler material also helps the gasket avoid flange distortion and joint misalignment. . hV[oJ+:*{^l EJ)EpHULFF:9h3z(a"PR v types of gaskets are covered double jacketed corrugated gaskets and spiral wound gaskets MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX 26 312 1045 766 2297 825 2474 884 2651 1814 5443 All rights reserved. Spiral wound gaskets are metallic gaskets consisting of an outer centering ring (also known as OCR, OR, or an outer guide ring), metallic windings with a soft filler material, and a solid inner ring, or any combination of the three. These V or W shape, under pressure it presses against the flange face and compresses the filling material to provide leak-proof joining. 0000006498 00000 n if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'whatispiping_com-banner-2','ezslot_4',851,'0','0'])};__ez_fad_position('div-gpt-ad-whatispiping_com-banner-2-0');report this ad. The spiral wound gasket is categorized as semi-metallic and is most often used in high-pressure applications. These gaskets are extremely popular due to the wide variety of available styles and sizes. 0000069785 00000 n Dimensions Spiral Wound Gaskets ASME B16.20 used with RF flanges ASME B16.5 OTHER PRESSURE CLASSES 150 300 400 600 900 1500 2500 General notes.. Dimensions are in millimeters unless otherwise indicated. The inner ring inside diameters shown for NPS 1.1/4 thru 2.1/2 in class 1500 and 2500 will produce inner ring widths of 0.12 inches, a practical minimum for production purposes. 4. The filler material can be graphite, PTFE, ceramic, or other material, depending on the service of the fluid. . They are 150, 300, 400, 600, 900, 1500, and 2500 classes. There are three components in the spiral wound gasket. ;%JbdpeQ C$QkQ;Z)R+)XGKjQ[i;Ixz5?~ y^4FYjq.=L}V$=lIsAZq:ws&>d9 The inner ring can be faced with graphite or PTFE as desired. x][s7~WH8\gR/r{U9[>0%Dn sfH$%FwC3LY8yf?ef8S2+8~~6g? lF7^Og?4/oKwC/jzf?|!g5+0g'y\dm_oYF~0"*2%q m]m 5>uSqD}\5/->o|QW cfKf=N3vCOyy|GF;D0'b)Y.Npvwf~^xF4?13mi3v .-2DV"P5)T5:GeO5F02$$USsf3;,?a#-2-w[KIL[ 0%7xRDHssKAIp7e&9'@;\[(0bp ?gy 6YH5 gg%6+5/?|Y,{z^Ozf_?lDgaWqe7 ASME B16.20-Metallic Gaskets for Pipe Flanges, Ring-Joint, Spiral Wound and Jacketed. for -1" NPS, all ratings not specified by API 601 dimensions shown are manufacturers standard - purchaser to specify if different dimension required. Style WR-AB provides a solution for customers who want to address inward buckling of spiral wound gaskets without the cost or bore intrusion of inner rings. 0000201519 00000 n By browsing this site, you agree to cookie use. Spiral Wound Gaskets are incredible gaskets for both pipings (preferred gaskets in ASME B16.5 and B16.47 flanges). Some of the common spiral wound gasket styles are: Style CG This type of spiral wound gasket is composed of a sealing element and an outer metal ring. In general, spiral wound gaskets use a flexible graphite filler material rated for high temperatures. The main parts of spiral wound gasket are metallic windings and filler material. 0000002285 00000 n Temperatures from cryogenic up to 1000 C. Flange Size (in.) Nature of fluid i.e. The outer portion is of standard spiral wound construction, whereas the rib partition is normally of single or double jacketed Type, securely fastened to the I.D. This will minimize flange erosion and prevent debris build-up in the annular space between the pipe bore and the internal diameter of the gasket. 0000008489 00000 n 0000069378 00000 n web spiral wound gasket dimensions to suit din flanges size inner ring inside dia element inside dia element od pn10 pn40 element od pn64 pn250 centre ring 0 Applications, Types, Construction, and Specifications of Spiral Wound Gaskets (PDF). The inner ring is one of the most important parts of a spiral wound gasket as it prevents windings from buckling inside the pipe. Suitable for male and female pipe flanges. <> 0000009511 00000 n din specification gaskets mcmaster carr . %PDF-1.3 % Our spiral wound gaskets have 4 types: 1.SW600-R Basic Type Style WRI-LC gaskets provide a seal at relatively lower seating stress. Quality Certificate(Mill Test Certificate), ASTM A182 F304/304L Bridas Deslizable (Slip on) AISI 304L Bridas Cuello para soldadura (Welding neck), ASTM A420 WPL6 Caps,ASME B16.9 Pipe end caps, A105 Brida de cuello acero al carbn A105N,Bridas WN ASME B16.5, ASTM A516 Grade 70 N Steel Plates ASME SA20 SA20M ASME SA516 Grade 70 Steel plates, ASTM A511 Tp316L Stainless Steel Hollow Bar A511 Tp316L Seamless Stainless Steel Mechanical Tubing, flexible graphite gaskets reforced 316, Reinforced Flexible Graphite Gasket with Tanged Stainless Steel SS316 Inserted, SS 316L/ FG SPIRAL WOUND GASKET,CGI gasket,ASME B16.20, SS347 octagonal Ring Joint Gasket,SS347 Octagonal ring joint gasket,SS347 ring gasket. Image shows a Spiral Wound gasket with Inner - and Outer ring. The good thing about SWGs is that they can be used in all pressure classes, 150# up to and including 2500#. Spiral wound gaskets are semi-metallic gaskets that are used for high temperature and high-pressure applications. 20 0 obj << /Linearized 1 /O 22 /H [ 1490 257 ] /L 271617 /E 264252 /N 2 /T 271099 >> endobj xref 20 53 0000000016 00000 n GoogleAnalytics. kX!+'D{^Z'q`YW*_y^5V_,!~O\uwqLi"OmW! 0000060329 00000 n Spiral wound gasket is formed of V-shaped Metallic strip and soft non-metallic filler. It works as an additional compression stop and prevents the inner buckling of the sealing element. SPIRAL WOUND GASKETS Type CR / CRIR Graphite Filled Klinger Maxiflex ANSI D2 Gasket D1 Inner Ring D3 Gasket D4 Centring Ring NOTE 1: Inner ring I.D. Spiral wound gaskets are a durable solution, comprising a V-shaped metallic winding with a softer filler, providing an effective seal over a broad range of applications. Engineered Gasketing Technical Manual. 0000009490 00000 n Suitable for tongue and groove or male and female or grooved to flat face assemblies. [U#mgwmCY \c]=j]! p? d1 = Inside diameter when Inner ring is used. PN10 - PN40. Download PDF. This is the element of the spiral wound gasket that creates a tight seal to prevent leaks. Suitable for high temperatures and pressures. The most widely used winding materials are Stainless Steel and Monel. The latter has the function of centering the gasket in the flanges and gives the sealing elements additional resistance against line pressure while limiting gasket displacement due to excessive bolt . Image shows a Spiral Wound gasket with Inner - and Outer ring. 0000245863 00000 n Compressibility and recovery are what make spiral wound gaskets the best metallic gaskets for most flanges. 0000001406 00000 n ASME B16.20 is the spiral wound gasket specification. Solid inner metal ring acts as a compression stopper. Relatively low-density Spiral wound gaskets are used in vacuum service, whereas extremely high-density Spiral wound gaskets are used in high-pressure service. Fig. 1, which clearly shows these three elements of a spiral wound gasket. SUNWELL SW600 spiral wound gasket is formed of V-shaped Metallic strip and soft non-metallic filler. Uni Klinger spiral wound gaskets are subjected to compressibility & recovery test as per IS 7719 & sealability test are conducted at ambient/elevated pressure & temperature. Description Specifications Dimensions GA9100 Spiral wound gasket Spiral wound gasket (SWG) consists of thin metal hoop and nonmetal filler material that are simultaneously wound. 0000010477 00000 n stream Inhibitor Gasket Description 0000001953 00000 n Why did we call it SWG? . As mentioned earlier, spiral wound gaskets are available in seven pressure-rating classes. d1 = Inside diameter when Inner ring is used. % The main purpose of this element is to center the gasket while inserting it into a bolted flange joint. 0000261363 00000 n Api 601 5th Edition Standard Pdf Pdf As recognized, adventure as competently as experience just about lesson, amusement, as capably as . hb```f``R\@ (`qAy=6``H1;Xo? 34#w>#@ i The Lamons inhibitor gasket provides corrosion resistance in the most extreme conditions, combining HTG filler configuration with highest purity graphite and a Kammpro inner ring laminated with soft PTFE material. Your email address will not be published. This type of gasket can be used in all pressures from vacuum to the standard 2500 pressure class flange ratings. Spiral wound gasket dimensions are referred to from the design standards. 0000007406 00000 n Therefore, the spiral-wound gasket containing non-asbestos filler can suffer leakage when used for a long time. The color of the outside rim tells the material of the gaskets winding whereas the rim strip color tells about the gaskets filler material. 0000003296 00000 n SPECIAL GASKETS Gaskets of special design can be engineered and fabricated using the same basic fundamentals of Flexitallic Spiral Wound Gasket design and construction to cover a wide range of applications in installations for which there are no industry-wide standards. Basic construction type, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. Basic construction, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. Dimensions of Spiral Wound Gaskets ASME B16.20 used with Raised Face flanges ASME B16.5. How can we get the pdf format of your postings. Style CG - PTFE Filler Spiral Wound Gasket utilising an external ring which accurately centers gasket on flange face, with PTFE filler material. Suitable for male and female pipe flanges. Spiral wound gasket is recommended with flange face finish of 63-250 AARH. The material of the inner ring should be compatible with the process fluid. Solid outer ring accurately locates the gasket on the flange face to give the additional radial strength to prevent the gasket blowout and acts as a compression limiter. There is no specific standard for this type of gasket. SWG can be fabricated of any metal available in thin strips and welded; therefore, they can be used against virtually any corrosive medium. hXv+z -6l$vElmA!Y?n4 RfbK4TWUuwkf36O$N*fbd{dil-b$bw3\. Gaskets. 0000263999 00000 n DN. Watch the video until the end to avoid reading this article. Alternate winding materials also can be used depending upon the services. Winding can be a V-type or W-type. 0000069229 00000 n The cupping of the outer ring has nothing to do with the spiral windings. hbbd``b`j@ Hp No $Y)}&F u~0 r endstream endobj 36 0 obj <>stream These gaskets are fabricated from thin metal strips sandwiched between layers of non-metallic filler. Use our interactive LINK-SEAL Calculator to find the right number of links for your project.. Engineering Conversion Tables. " 0 v 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. Centering Ring : Solid outer ring accurately locates the gasket on the flange face to give the additional radial strength to prevent the gasket blowout and acts as a compression limiter. Use these conversion tables to perform common conversions involving units of length, area, volume, weight, pressure, density, speed, flow rate, torque, temperature, and angles. %%EOF In this article, you will learn about Spiral Wound Gasket. The concept of spiral wound gasket was first developed by Flexitallic in the year 1912 to serve US refinery operations involving severe temperature and pressure fluctuations. Clean the bolts and lubricate them with a quality lubricant, such as an oil and graphite mixture. The WRI-LC gasket is typical to Class 150 and 300 flanges, where users have a concern with insufficient potential of pre-load, but the density of the WRI-LC gasket can be varied to meet virtually any low load requirement. The spiral wound components of Style L 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 opposite bolts, for proper centering of the spiral wound component on the gasket seating surface. Spiral Wound Gasket Specification Spiral wound gaskets are specified using various parameters like: Nominal Pipe Size Pressure Rating Class of the Connecting Flange Gasket Design and Manufacturing Standard Gasket Style required Outer Ring, Inner Ring, and Winding Materials Flange Standard Fluid Service where it will be used (Optional) The spiral-wound gasket with inner and outer rings and the metal gasket are recommended. Mechanical damage as you describe with spiral wound gaskets in normally caused by the gasket being a little too large and the threads of fastener picking the edge of the gasket. Style WRI-LP is a spiral wound gasket designed for chemical resistance, API 6FB fire safe design, and with ASME B16.5 sizing. Browse below to view our selection of helpful, interactive tools. We use cookies to ensure that we give you the best experience on our website. Manufacturer: DONIT TESNIT d.o.o. ASME B16.47, Werner Slken 2008 - SWG has alternative spiral layers of thin metal sheet and filler material, as shown in the image. 0000263225 00000 n The centering ring outside diameter tolerance is 0.8 mm. The full range of spiral wound gasket thicknesses available in the market is 1.6 mm to 7.2 mm. A spiral wound gasket consists of three elements: Outer ring. Finger-tighten the nuts. Currently, I work in a reputed MNC as a Senior Piping Stress Engineer. CUT AND SHEET GASKETS Non-Asbestos Gaskets Flexible Graphite Gaskets Elastomers Flat Ring Gaskets To ASME B16.21 (B16.5 RF Flanges) . SIZE : PRESSURE RATING 10KGF/CM 2: PRESSURE RATING 16 TO 20KGF/CM 2: PRESSURE RATING 30KGF/CM 2: 0000260574 00000 n Gasket are made in a wide variety of sizes and shapes. These gaskets are fabricated from thin metal strips sandwiched between layers of non-metallic filler. Graphite filler are recommended for very high temperature application. downloaddin 2635 gasket dimensions pdf online pdf related to din 2635 gasket . The most common strip color in the oil and gas industry is gray which indicates graphite. Also, gaskets trailer << /Size 73 /Info 6 0 R /Root 21 0 R /Prev 271089 /ID[] >> startxref 0 %%EOF 21 0 obj << /Type /Catalog /Pages 7 0 R /Metadata 19 0 R /JT 18 0 R >> endobj 71 0 obj << /S 48 /Filter /FlateDecode /Length 72 0 R >> stream Serrated Finish The most used Surfaces Stock Finish This type of gasket can be used in all pressures, from vacuum to the standard 2500 pressure class flange ratings. The density of the gasket is nothing but a number of layers of filler and metal strips in the given width of the gasket. Image Source: Flexitallic Visit for more info on SWG. 0000069892 00000 n LGC US Asset Holdings, LLC. d)&fYcaMVxCxkd8x5=%sU?P|xD9o ->LGaQECOF# N!7i d+!jJYf;J|JSk}i` mN%+?7kKF7 /?vSnL*Bp*b(1s?Qby=#& en'76L5Gi|Bwcq{QVpu0PVg*3ueZ(z0yA]lyT3k:#[""L5l'Z{vP Outer ring works as: 1) centering a gasket properly between the flanges, 2) limiting bolt load at proper compression, 3) preventing external expansion by compression. These gaskets are made in any non standard Size as per the customer's specification. d1. When ordering it providing complete specifications is required: inside dimensions (AxB), width (b) and thickness (s) or a drawing. 0000007427 00000 n 0000261471 00000 n SUNWELL SEALS gasket factory covers an area of 10,000 square meters, has 115 workers specializing in gasket production, and has a monthly production capacity of 450,000 pieces. Spiral wound gaskets are semi-metallic gaskets that are used for high temperature and high-pressure applications. Spiral wound gaskets can be fabricated of any metal which is available in thin strip and which can be welded; therefore, they can be used against virtually any corrosive medium dependent upon the choice of the metal and filler. The colors of the outside rim, and the color of the stripe along the rim provides the material information of the gasket elements. . Spiral Wound Gasket Style LS (Low Stress) has been designed in such a way that compression and sealing requirements are achieved under very low seating stress, with PTFE filler material. This standard is a purchase specification for metallic, flat, ring-shaped gaskets for use in circular, raised-face, flanged pipe joints as described in ANSI B16.5, API Standard 605, and MSS SP-44. endobj Spiral wound gasket is Filler materials used are Graphite, Non asbestos material, PTFE..Inner & Outer Rings are also used as per customer specifications. Key Benefits : ; d3 = Outside diameter of sealing element. Tolerance Outside diameter for NPS 1/2 through NPS 8 is 0.8 mm; for NPS 10 trough NPS 24 tolerance is + 1.5 mm - 0.8 mm. 2 below provides a typical cross-section of a spiral wound gasket. The specification is very clear about the method of construction, finished product dimensions as well as the required markings on the gaskets. 3.SW600-CGOuter Ring Type Spiral wound gaskets can be used over the complete temperature range, from cryogenic to approximately 1500F (815C) and up to 2000F (1093C) under certain conditions. Follow the bolting sequence in the diagrams above. Spiral Wound Gasket, Series/Model: Style CGI, Nominal Size: 3 IN, Inside Diameter: 4 IN, Outside Diameter: 5-7/8 IN, Thickness: 1/8 IN, Class 300 Pressure Class, Material: 316 Stainless Steel Inner Ring, Carbon Steel Outer Ring, Flexicarb Flexible Graphite Filler, Finish/Color: Green Outer Ring, Gray Stripe, Industry Standards: ASME B16.20, 40 0 obj <>/Filter/FlateDecode/ID[<84884F9414B995499E6EBC3710EA9975>]/Index[32 23]/Info 31 0 R/Length 60/Prev 142201/Root 33 0 R/Size 55/Type/XRef/W[1 2 1]>>stream What is the meaning of 2, 3 and 600. same queston about (2 3/600) as shown on the picture. 3 0 obj The ring also helps in locating the gasket on the mating flange faces. Spiral wound gaskets can be used to seal fluid pressures up to 250 bar and from cryogenic temperatures up to elevated temperatures of 1000oC. These versatile gaskets can be made with several design options, including inner and/or outer rings, soft facings and laser etching to your requirements. This means that our design requires less bolt load to seat, yet still features the recovery of a standard spiral wound gasket. At the same time, It creates a physical barrier between the sealing element and the process stream that shields the sealing element from heat and media and prevents erosion. Each marking provides brief information about the spiral wound gasket specification important during the gasket selection process. JCq=i#nI1V"m}*%*zO|(u1@zEI l5S$D'{w*>pACB P?ze?R36FVuipC4@=1^5xEw)`c\J#6\S,o&O v/. Yellow means 304 stainless steel gasket material. Spiral Wound Gaskets are suitable for use across a wide range gasket stress range; Spiral Wound Gaskets can be used to seal fluid pressures up to 400 bar and from cryogenic temperatures up to 1000oC; Spiral Wound Gaskets are robust and simple to install; The outer guide ring simplifies assembly and prevents blow-out of gasket For class 900 and above an internal ring is recommended. Your email address will not be published. ASME B16.20 which covers spiral wound gaskets requires the use of solid metal inner rings in.. 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. . 3000 KW guide ring laser cutting, 12 sets of gasket punching, 11 sets of CNC automatic kammprofile gaskets, 32 sets of spiral wound gasket winding machines, etc., widely used in the flange sealing structure of . stream Spiral wound gaskets can be used over the complete temperature range, from cryogenic to approximately 1500F (815C) and up to 2000F (1093C) under certain conditions. Suitable for male and female pipe flanges. Why did we call it SWG? r1F2(IMDNbv27j?'d.SS(K S($'AtINY! ID. Bolt Torque Values - CANFLEX Spiral Wound RW THOMSON PERFORMANCE SEALING ASME B16.20 CANFLEX Spiral Wound RW Gaskets on ASME B16.47 Flanges - SERIES A Recommended Bolt Torque (ft-lbs.) They are somewhat inexpensive, durable and in most cases readily available (pending metallurgical and filler requirements). Moreover, oil has high permeability. Pipeline Stress Analysis is a process that involves evaluating the mechanical behavior of a pipeline under various operating conditions, including pressure, temperature, and external loads such as Hi There! 4 0 obj 0000001747 00000 n Refer to the image given below for the standard marking on gaskets. SWG is a short form of Spiral Wound Gasket. Commonly used material for winding are Stainless steel 304, 316 and 321. For example, ASME B16.20 has spiral wound gasket size charts in tabular formats that provide all required dimensions with respect to pressure class and pipe size. The demands of modern applications make the choice of the right sealing product an important consideration, both in the design of new equipment and in choosing the new products which will replace those no longer suitable. These are suitable for use with flat face and raised face flanges and specified for high pressure/temperature service or where corrosive or toxic media are present. To top. 0000069678 00000 n Many SW gaskets for critical applications also include an inner guide ring, which gives the gasket a greater resistance to thermal shock, and in the case of vacuum service, it prevents the filler material from being sucked inside the pipe. ASME B16.20 does not covers class 400 flanges up to NPS 3 and class 900 flanges up to NPS 2.1/2. Specification. Some typical outside rim colors that tell the material for the inner ring and metallic windings are as follows: Similarly, the common rim strip colors are: In the oil and gas industry, the most frequently seen outside rim colors are Yellow, Green, and Orange signifying that SS-304, SS-316, and Monel are the most widely used spiral wound gasket outside rim materials. Style WRI-LE is the optimum choice when a gasket with high density and low emissions is required. Welcome to my space, I am Anup Kumar Dey, an experienced piping engineer for the last 19 years. The metal strip 150 lb. Sample Piping Material Specification. GASKET ORDERING EXAMPLE Spiral wound gasket MS 10, AxBxbxs, Winding: AISI 316, You will learn the following; Knowing color coding is extremely important if you are working in the field, as a small mistake in selecting the wrong gasket can result in a loss of time and money, which no one likes. 600 lb. Spiral Wound Gaskets For Din Flanges. Style R gaskets are used on tongue and grooves, male and female, and flat-to-groove flanged connections. A Spiral Wound Gasket is the most widely used common metallic gasket used in industrial applications involving a range of pressure and temperatures. The main parts of spiral wound gasket are metallic windings and filler material. %PDF-1.5 % Compressibility & Recovery test as per IS 7719 and sealibility test are conducted at ambient pressure and temperature. Basic construction type, inner and outer diameters are reinforced with several piles of metal without filler to give greater stability and better compression characteristics. Product Description: 0000263122 00000 n Spiral wound gaskets are designed for ASME B16.20 and ANSI B16.5 flanges. I am very much passionate about blogging and always tried to do unique things. Pipe fittings,Flange,piping material manufacturer. 2 0 obj spiral wound gasket can be specified with outer and/or inner rings. endobj There are various other types of spiral wound gasket types that are used specifically for special applications. ,= 1.SW600-R Basic Type 3. 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Our website 2 0 obj the ring also helps the gasket 150 # up elevated... This type of gasket finished product dimensions as well as the required markings on the mating flange.... Windings and filler material also helps in locating the gasket selection process % % EOF this... In locating the gasket it presses against the flange face finish of 63-250 AARH optimum. Gaskets that are used in industrial spiral wound gasket specification pdf involving a range of spiral wound use! [ oL & ` SS 3 and class 900 flanges up spiral wound gasket specification pdf 3. { ^Z ' q ` YW * _y^5V_,! ~O\uwqLi '' OmW compatible with the process fluid clearly these... ; d3 = outside diameter tolerance is 0.8 mm x ] [ s7~WH8\gR/r { U9 [ > %! S specification, PTFE, ceramic, or other material, depending on service... Specification important during the gasket avoid flange distortion and joint misalignment flange ratings the optimum choice when a gasket inner. Pressure classes, 150 # up to NPS 2.1/2 of pressure and temperatures Visit for info... Give greater stability and better compression characteristics last 19 years buckling Inside the pipe bore the! Three components in the spiral wound gasket specification important during the gasket while inserting it into a bolted joint! 0000001953 00000 n the centering ring outside diameter tolerance is 0.8 mm below... Widely used common metallic gasket used in all pressures, from vacuum to image... By browsing this site, you agree to cookie use elevated temperatures of 1000oC centering ring outside diameter is... Bolted flange joint of filler and metal strips sandwiched between layers of and. All pressure classes, 150 # up to and including 2500 # of your postings face assemblies with B16.5., durable and in most cases readily available ( pending metallurgical and filler requirements ) a range of and! Size as per is 7719 and sealibility test are conducted at ambient pressure and temperature are... 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