Spiral Wound Gaskets are incredible gaskets for both pipings (preferred gaskets in ASME B16.5 and B16.47 flanges). MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX 26 312 1045 766 2297 825 2474 884 2651 1814 5443 Flanges in the 150 to 2500 pressure class range will benefit from this leading edge design. The inner ring is one of the most important parts of a spiral wound gasket as it prevents windings from buckling inside the pipe. 150 lb. SWG can be fabricated of any metal available in thin strips and welded; therefore, they can be used against virtually any corrosive medium. Gaskets. 0000060329 00000 n 0000009490 00000 n This gasket features a conventional outer guide ring and a Kammpro style LP1 inner ring that can be ordered in carbon steel (with or without PTFE coating) or in any alloy, such as Monel. We manufacture and supply complete ranges of metallic and semi-metallic joints, gaskets and . stream 0000004612 00000 n Watch the video until the end to avoid reading this article. hV[oJ+:*{^l EJ)EpHULFF:9h3z(a"PR v Wherever there is a flanged joint on a pipe, valve or pressure vessel, we can provide a proven gasket product that will ensure the joint is strong, safe and totally reliable within the planned maintenance schedule of your fluid handling plant. Combinations of metal strip and filler are selected to suit the specific fluid media and operating conditions. These gaskets are suitable for high pipeline pressure on flat or raised flange faces. You can see in the image a spiral wound gasket. Dimensions are in millimeters unless otherwise indicated. CUT AND SHEET GASKETS Non-Asbestos Gaskets Flexible Graphite Gaskets Elastomers Flat Ring Gaskets To ASME B16.21 (B16.5 RF Flanges) . This allows for various grades of surface finish to be made available by flange manufactures for the gasket contact surface of metal flanges. flexible graphite gaskets reforced 316, Graphite Gasket with Tanged Stainless Steel SS316 Inserted SS316 Tanged Reinforced Graphite Gasket Manufactured from flexible graphite foil mechanically clinched to a thick stainless steel tanged (perforated) metal sheet Read more, SS 316 FG SPIRAL WOUND GASKET,ASME B16.20 SS316 Spiral Wound Gasket ,CGI gasket,316L/316L FG/CS SPIRAL WOUND GASKET SS 316 FG Spiral Wound Gasket with Inner and Outer Ring Spiral Wound GasketWithGraphiteFiller SWG ASME B16.20 OUTER Read more, SS347 octagonal Ring Joint Gasket,SS347 Octagonal ring joint gasket,SS347 ring gasket We are the professional manufacturer of SS347 octagonal Ring Joint Gasket,SS347 Octagonal ring joint gasket,SS347 ring gasket 347(SS347) is an austenitic stainless steel Read more. SWG has alternative spiral layers of thin metal sheet and filler material, as shown in the image. The spiral wound gasket is semi-metallic, comprising of a spirally wound v-shaped stainless steel strip and a non-metallic filler material, such as graphite or PTFE. Suitable for use with flat face and raised face flanges and specified for high pressure / temperature service Class 900 and above or where corrosive or toxic media are present. 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 Style WRI-LE is the optimum choice when a gasket with high density and low emissions is required. For proper positioning, spiral wound gaskets are provided with outer centering ring made up of Carbon Steel. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Gasket Quiz Test yourself, Take This Quiz. Spiral wound gasket is Filler materials used are Graphite, Non asbestos material, PTFE..Inner & Outer Rings are also used as per customer specifications. . ilAH+A(KC8h iHxM(Mp4q4boNjb,h"qm>EK2* n!im"v5:Y r[kAldrTn Ws"W3d+.u`Fw\-\^C5$w. Refer to the image given below for the standard marking on gaskets. This type of gasket can be used in all pressures from vacuum to the standard 2500 pressure class flange ratings. It is essential to provide adequate support for pipes to Online Pipeline Stress Analysis Course using Caesar II for Beginners. In case of installing the outer ring, it is very easy to install the gasket to flange face because the end of outer ring will touch at bolts Suitable for use with flat face and raised face flanges. The inner ring provides the function of a compression stop as well as creates a physical barrier between the sealing element and the media stream. for -1" NPS, all ratings not specified by API 601 dimensions shown are manufacturers standard - purchaser to specify if different dimension required. 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. The inner ring is specially designed such that it reduces turbulent flow. To top. All Rights Reserved. "O&&"K-;#S)UBxkgG }u{g/pJwV dlqLg0[N74_5&2pS!h/_ Vp^nnFA-fy.lUB2|qCT]!#z jYEEy^]:X@n ` Cj(Fg~j.!(sK|A33o'YJH|{ 1 0 obj The most common strip color in the oil and gas industry is gray which indicates graphite. 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. It consists of a spirally wound v-shaped metallic with a non-metallic filler material. Required fields are marked *. SWG is a short form of Spiral Wound Gasket. Inhibitor Gasket Description 0000064381 00000 n d1 = Inside diameter when Inner ring is used. The metal hoop is pre-formed in V or W shaped profile, which allows the gasket to act as a spring between the flanges. 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 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. During the inspection of Spiral Wound Gasket Dimensions, you should check for, Gasket Quiz Test yourself, Take This Quiz, "In the joy of others lies our own" - HDH Pramukh Swami Maharaj, Pipe Fittings Inspection Visual & Testings, Permissible Variations of Gasket dimensions are covered in. 400 lb. hb```f``R\@ (`qAy=6``H1;Xo? 34#w>#@ i Custom filler, winding strip, guide ring and inner ring materials are available upon request. 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. 900 lb. It is of semi-metallic configuration and capable of sealing a wide range of media across a range of Pressure (upto 450 Bar) and Temperature (-250 to +1000C) applications. The windings are cushioned by the filler. You may encounter "hybrid" metal gaskets in the industry that are a cross between a spiral wound and kammprofile gasket. In case of installing the outer ring, it is very easy to install the gasket to flange face because the end of outer ring will touch at bolts Suitable for use with flat face and raised face flanges. You can see the sample marking in the image. corrosive nature, fluid concentration et. 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 Gaskets are manufactured in accordance with all relevant gasket standards to suit flange designations: ASME B 16.20, MSS SP-44, API 605, DIN 2632-2638 DIN EN1514-2, JIS B2404, BS EN1514-2 , etc. 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. Temperatures from cryogenic up to 1000 C. 22 SW-2.1-4 Inside Diameters of Inner Rings for Spiral-Wound Gaskets for Use With ASME B16.5 Flanges 24 SW-2.1-5 Inside Diameters of Inner Rings for Spiral-Wound Gaskets Used Between ASME B16.47 Series A Spiral wound gasket is formed of V-shaped Metallic strip and soft non-metallic filler. For PTFE filler gasket, this style is basically not recommended due to possibility of inward buckling during compression. Another common filler material is PTFE (Polytetrafluoroethylene). 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. 1.SW600-R Basic Type This external ring accurately centers Gasket on flange face. of the spiral wound portion. This MESC SPE specifies requirements for spiral wound gaskets. 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. 4. Spiral wound gasket dimensions are referred to from the design standards. These gaskets are fabricated from thin metal strips sandwiched between layers of non-metallic filler. 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. ID. The spiral wound gasket can be used to seal fluid pressures up to 250 bar and cryogenic temperatures as low - 200oC and up to elevated temperatures 550oC. The most widely used winding materials are Stainless Steel and Monel. This is the element of the spiral wound gasket that creates a tight seal to prevent leaks. SW-2.1-3 Dimensions for Spiral-Wound Gaskets Used With ASME B16.47 Series B Flanges. General filler material used are Asbestos and graphite. Due to its excellent compression resilience, it is suitable for sealing spots where the alteration of temperature and pressure are frequent. What is a Spiral Wound Gasket? 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. 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