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Transcript of SPIRAL WOUND GASKETS - · PDF fileand fabricated using the same basic fundamentals of...

  • Driven by the industry'sneed for safe, effectivesealing solutions,Flexitallic invented thespiral wound gasket.

    SPIRAL WOUNDGASKETS

    www.flexitallic.eu

  • Our extensive and varied productoffering includes spiral wound gaskets,RTJ gaskets, FlexproTM Kammprofiles,sheet materials, dynamic and staticpackings, pipe support and customrubber products. Drawing upon thegroups rich history and present dayvalues of leadership, quality, service and technology, we are at the forefrontof developing sealing solutions forindustries around the world.

    In addition to a wide range of products,we also deliver world-class technicalsupport and Joint Integrity training.

    The Flexitallic Group is the internationalmarket leader in the manufacture and supply of high quality, high valueindustrial static sealing products, deliveringindustrial gaskets on a global scale.

    About usAs the developer of the spiral woundgasket in 1912, we have built on thislegacy of innovation with revolutionaryproducts including Thermiculite andSigma, The Flange Rescue Gasket winnerof the NACE and Dupont Plunkett Awards,and most recently the ChangeTM Gasket, set to transform the global sealing industry.We have a global network of AlliedDistributors across 30 countries. Thisensures local demand is met quickly,providing a combination of the highestproduct quality and outstanding customerservice.

    FLEXITALLIC

  • 1.

    Based on sales and geographic reach, the Flexitallic Grouphas become the global supplier of industrial gaskets.

    Allied distributors

    Inside IndustryWe pride ourselves on not simply supplyingproducts, but by supporting customers witha detailed knowledge of their industry andapplications, so that products and services are tailored to their specific needs.

    This unique approach means that we focuson providing more than just a product, butalso a complete solution that adds genuinevalue to our clients.

    Global Distribution... Local SupportOur products are distributed through a global network of Allied Distributors.

    These carefully selected distribution partnersare strategically located within their territoryto deliver the best possible service andproducts to our customers. This approachmeans our products and know-how areavailable to the global industries we service.

    Innovative Product RangeWe have a rich history of innovation,which has seen us lead the industry with many new products.

    Over the years, our products have gaineda reputation for quality, reliability andtechnology that is second to none.

    Customised Engineering SolutionsOur Application Engineering, ProductionEngineering and R&D teams work closely together to design, develop andmanufacture bespoke sealing solutions.

    We have been responsible for a numberof truly revolutionary products, includingThermiculite, Sigma and the FlangeRescue Gasket, which ensure we areable to continually meet the ever morestringent requirements of our customers.

    Flexitallic SafeOver the last century, our aggressiveR&D efforts have helped customersbecome Flexitallic Safe. From the firstSpiral Wound Gasket in 1912 to the everevolving applications for Thermiculite,our goal is to develop materials thatpush the parameters of heat, pressureand chemical resistance.

    Our Commitment to QualityWe place great emphasis on maintaininginternational quality standards,and are approved to ISO 9001:2008, ISO 14001:2004 and OHSAS 18001:2007,API 6A and API 17D, to ensure we meetthe highest possible standards for all our products and services.

    We also invest heavily in test and quality assurance equipment to maintainour reputation for the highest qualityproducts.

    Our materials are subjected to a widerange of tests as specified by statutoryregulations and customer requirements.These approvals enable our customers to make informed choices as to thesuitability of a product for each andevery application.

  • 2. www.flexitallic.eu

    PAGE

    INTRODUCTION 1

    SPIRAL WOUND GASKETS 3

    GASKET IDENTIFICATION 4

    GASKET MATERIALS 5

    GASKET SELECTION 6

    STYLE CG & CGI GASKETS 7

    DIMENSIONAL DATA 8

    TECHNICAL INFORMATION 21

    SPECIAL APPLICATION GASKETS 25

    THE ACADEMY OF JOINT INTEGRITY 32

    CONTENTS

  • Driven by the industrysneed for safe, effectivesealing solutions forincreasingly demandingapplications, Flexitallicinvented the spiralwound gasket in 1912.

    SPIRAL WOUNDGASKETS

    First and ForemostThe concept of spiral wound gasketconstruction was originated by Flexitallicin 1912, starting a new era in safe,effective sealing. The primary purpose for this development was the increasinglysevere temperatures and pressures usedby U.S. refinery operators in the first halfof the 20th century.

    The necessity for a gasket to have the ability to recover cannot be overemphasised. The effects of pressure and temperature fluctuations, thetemperature differential across the flange face, together with bolt stressrelaxation and creep, demand a gasketwith adequate flexibility and recovery to maintain a seal even under these varying service conditions. The Flexitallic Spiral Wound Gasket is the precisionengineered solution to such problems,meeting the most exacting conditions of both temperature and pressure inflanged joints and similar assemblies and against virtually every knowncorrosive and toxic media.

    Metal Strip

    Filler Material

    3.

  • 4. www.flexitallic.eu

    GASKETIDENTIFICATION

    Metallic WindingMaterials The metallic winding material is designated by a solid colouridentification around the outside edge of the centering ring.

    Non Metallic FillersThe gasket fillermaterials are designatedby a number of stripesplaced at equal intervalsaround the outside edgeof the centering ring.

    304SSYellow

    347SS Blue

    321SSTurquoise

    316LSS Green

    304LSSNo colour

    317LMaroon

    430SSNo colour

    309SSNo colour

    310SSNo colour

    Titanium

    PurpleInconel X750

    No ColourIncoloy 800/825

    WhiteInconel 600/625

    GoldAlloy 20 Black

    Nickel 200 Red

    Hastelloy C276 Beige

    Carbon Steel Silver

    Zirconium No colour

    Hastelloy B2 Brown

    Monel

    Orange

    Flexite Super

    Pink Stripe

    Flexicarb

    Gray StripePTFE

    White Stripe

    Ceramic Light Green Stripe

    Thermiculite 835Light Blue Stripe

    Duplex No colour

    Gaskets are colour coded to help expedite the selection and identity of the gaskets you need. The colour on the outside edge of the centering ring identifies both the winding and filler materials.The metallic winding material is designated by a solid colour. The filler materials are designated bycolour stripes at equal intervals on the outside edge of the centering ring. Flexitallic colour codingmeets the industry standard for metal and filler materials listed in ASME B16.20.

  • 5.

    GASKETMATERIALS

    NOTESFigures stated are for information only. Please refer to the current version of the original standards for dimensional information.Selected materials should be compatible with operating temperature and chemicals. If in doubt, contact Flexitallic Technical Department.We recommend a max continuous operating temperature of 260oC, above this decomposition starts to occur slowly, increasing rapidly above 400oC (750oC)

    IDENTIFICATION REQUIREMENTS

    Stainless Steel 304316L

    OTHERSStainless Steel 304L

    310316Ti317L32134743017-7PH

    Alloy 20Monel

    Titanium

    Nickel 200Inconel 600

    625X-750

    Hastelloy B2C276

    Incoloy 800825

    DuplexZirconium

    Tantalum

    METAL WINDING STRIP AS STANDARD

    Flexicarb flexible graphiteThermiculite 835Flexite Super

    PTFECeramicNon-sintered PTFE

    Thermiculite, FLEXITALLICSproprietary high-temperature,sealing material is comprised of chemically exfoliated andthermally exfoliated vermiculite.

    This revolutionary patentedproduct simulates the structure of exfoliated graphite but with onenotable exception... gaskets madewith Thermiculite maintain theirintegrity, even at extremetemperatures.

    Thermiculite is thermally stable, ensuring against thermaloxidation, at temperatures inexcess of 1000oC (Thermiculite 835).

    FILLER MATERIAL

    Carbon Steel

    OTHERSStainless Steel 304

    304L316316L316Ti310321347410

    Inconel 600625

    Monel

    Titanium

    Nickel

    Incoloy 800825

    Alloy 20Hastelloy B2

    C276

    GUIDE RING MATERIAL AS STANDARD

  • 6. www.flexitallic.eu

    GASKETSELECTION

    Style RIRStyle CGI

    Raised Face Flat Face Male and Female Tongue and Groove

    Style CG Style R

    Flat Face to Recess

    Style CG

    Style CGI

    Style R Style R

    Style RIR Style RIR

    Flange Face

    NOTES: Where style R gaskets are fitted it is essential that the flange is correctly dimensioned to provide a compression stop, as over compression can result in failure.

    RecommendedGasket StyleFor general duties

    RecommendedGasket StyleFor high pressure/temperature duty,also for gaskets withPTFE filler, corrosive or fluctuating pressureor temperature serviceconditions.

    Style CG Is comprised of asealing element and outer metalring. The outer ring assists inlocating the gasket on the matingflange faces and prevents overcompression of the sealing element ensuring optimum sealingperformance. Style CG gaskets aresuitable for use on raised and flatfaced flanged connections. Style CGgaskets are suitable for use in mildto moderate service conditions.

    Style CGI In addition to an outermetal ring the CGI style gasket is fittedwith an inner metal ring, constrainingthe sealing element on both internaland external diameters. The inner ringfunctions as an addition