SPIRAL WOUND GASKETS - Flexitallic

SPIRAL WOUNDGASKETSDriven by the industry'sneed for safe, effectivesealing solutions,Flexitallic invented thespiral wound gasket.www.flexitallic.com

FLEXITALLICThe Flexitallic Group is the internationalmarket leader in the manufactureand supply of high quality, high valueindustrial static sealing products.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, andmost recently the Change Gasket, setto 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 outstandingcustomer service.Our extensive and varied productoffering includes spiral wound gaskets,RTJ gaskets, Flexpro Kammprofiles,sheet materials, dynamic and staticpackings, pipe support and customrubber products. Drawing upon thegroup’s rich history and present dayvalues of leadership, quality, serviceand 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.Our MissionMaking the world safer and cleanerthrough engineered sealing solutions.

Allied distributorsBased on sales and geographic reach, the Flexitallic Grouphas become the global supplier of industrial gaskets.Innovative Product RangeWe have a rich history of innovation,which has seen us lead the industrywith 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 workclosely 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.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 allour products and services.We also invest heavily in test andquality 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 customersto make informed choices as to thesuitability of a product for each andevery application.Inside IndustryWe pride ourselves on not simply supplyingproducts, but by supporting customers witha detailed knowledge of their industry andapplications, so that products and servicesare 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 aglobal 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.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.1.

CONTENTSPAGEINTRODUCTION1SPIRAL WOUND GASKETS3GASKET IDENTIFICATION4GASKET MATERIALS5GASKET SELECTION6STYLE CG & CGI GASKETS7DIMENSIONAL DATA8TECHNICAL INFORMATION21SPECIAL APPLICATION GASKETS25THE ACADEMY OF JOINT INTEGRITY322. www.flexitallic.com

SPIRAL WOUNDGASKETSDriven by the industry’sneed for safe, effectivesealing solutions forincreasingly demandingapplications, Flexitallicinvented the spiralwound gasket in 1912.First and ForemostThe concept of spiral wound gasketconstruction was originated by Flexitallicin 1912, starting a new era in safe,effective sealing. The primary purposefor this development was the increasinglysevere temperatures and pressures usedby U.S. refinery operators in the first halfof the 20th century.Metal StripFiller MaterialThe necessity for a gasket to havethe ability to recover cannot be overemphasised. The effects of pressureand temperature fluctuations, thetemperature differential across theflange face, together with bolt stressrelaxation and creep, demand a gasketwith adequate flexibility and recoveryto maintain a seal even under thesevarying service conditions. The FlexitallicSpiral Wound Gasket is the precisionengineered solution to such problems,meeting the most exacting conditionsof both temperature and pressure inflanged joints and similar assembliesand against virtually every knowncorrosive and toxic media.3.

GASKETIDENTIFICATIONGaskets 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.Metallic WindingMaterialsThe metallic windingmaterial is designatedby a solid colouridentification aroundthe outside edge ofthe centering e347SSBlue310SSNo colour304LSSNo colour309SSNo colour430SSNo colourAlloy 20BlackTitanium PurpleInconel 600/625GoldIncoloy 800/825WhiteInconel X750No ColourHastelloy C276BeigeHastelloy B2BrownNickel 200RedZirconiumNo colourCarbon SteelSilverPTFEWhite StripeFlexicarb Gray StripeMonel OrangeDuplexNo colourFlexite Super Pink StripeCeramicLight Green Stripe4. www.flexitallic.comNon Metallic FillersThe gasket fillermaterials are designatedby a number of stripesplaced at equal intervalsaround the outside edgeof the centering ring.Thermiculite 835Light Blue Stripe

GASKETMATERIALSMETAL WINDING STRIP AS STANDARDStainless SteelOTHERSStainless SteelAlloy 20Monel Titanium Nickel 200Inconel Hastelloy Incoloy DuplexZirconium Tantalum 2C276800825FILLER MATERIALFlexicarb flexible graphiteThermiculite 835Flexite Super PTFECeramicNon-sintered PTFEGUIDE RING MATERIAL AS STANDARDCarbon SteelOTHERSStainless SteelThermiculite , FLEXITALLIC’Sproprietary high-temperature,sealing material is comprisedof chemically exfoliated andthermally exfoliated vermiculite.This revolutionary patentedproduct simulates the structureof exfoliated graphite but with onenotable exception. gaskets madewith Thermiculite maintain theirintegrity, even at extremetemperatures.Inconel Thermiculite is thermallystable, ensuring against thermaloxidation, at temperatures inexcess of 1000 oC(Thermiculite 835).Alloy 20Hastelloy Monel Titanium Nickel Incoloy OTESFigures 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 REQUIREMENTS5.

GASKETSELECTIONStyle 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 sealingelement 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 additional compressionstop and prevents inner buckling of thesealing element. It also creates aphysical barrier between the sealingelement and process stream shieldingfrom heat and media while preventingerosion. Style CGI gaskets are suitablefor use on raised and flat faced flangedconnections and moderate to severeservice conditions.Style R – Is comprised of a sealingelement, additional plies of metalare used at the start andtermination of the winding processimproving stability and sealingperformance. Unlike other stylesof spiral wound gasket compressionof the sealing element is controlledby the use of the correct flangeface configuration, style R gasketsare suitable for use on tongue andgroove, male and female and flatto groove flanged connections.Style RIR – Is comprised of asealing element and inner metal ring.The inner ring functions as botha compression stop and creates aphysical barrier between the sealingelement and media stream. The innerring is also designed to reduceturbulent flow, minimising flangeerosion and prevents the build updebris in the annular space betweenthe pipe bore and internal diameterof the gasket. Style RIR gaskets aresuitable for use on male and female(spigot and recess) flangedconnections.Published as an indication of which Flexitallic spiral wound gasket best suits different pipe flange configurations and service conditions.SELECTION GUIDEFlange FaceRaised FaceFlat FaceMale and FemaleTongue and GrooveFlat Face to RecessStyle CGStyle CGStyle RStyle RStyle RStyle CGIStyle CGIStyle RIRStyle RIRStyle RIRRecommendedGasket StyleFor general dutiesRecommendedGasket StyleFor high pressure/temperature duty,also for gaskets withPTFE filler, corrosiveor fluctuating pressureor temperature serviceconditions.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.6. www.flexitallic.com

Style CGSTYLE CG &CGI GASKETSStyle CGIAll CG and CGI Gaskets for these standardflanges are 0.175 in (4.5mm) thick, fittedwith 0.125 in (3.2mm) thick solid metal rings,unless otherwise stated.To suit standardraised face andflat face flanges.Special gasketsGaskets of special design can be engineeredand fabricated using the same basic fundamentalsof Flexitallic Spiral Wound Gasket design andconstruction to cover a wide range of applicationsin installations for which there are no industry-widestandards. Special gaskets have been designed forvalves, pumps, compressors, turbines, boilers, heatexchangers, etc. Consult with Flexitallic engineersas early in the design stage as possible.Flexitallic style CG and CGI SpiralWound Gaskets can bemanufactured in accordance withall relevant gasket standards to suitthe following flange designations.Please note that gaskets for nonstandard flanges are also readilyavailable.Low Emission style Gaskets areavailable, which conform to major oilrefinery requirements in accordancewith CFET March 2013 revision.Please speak to the ApplicationsEngineering Department for furtherinformation.Note: When using PTFE filler material,Spiral Wound Gaskets shall be fittedwith an inner metal ring (i.e. style CGI).ASME B16.5ASME B16.47 Series A (MSS SP 44)ASME B16.47 Series B (API 605)BS 10BS 1560BS 4504BS EN 1092BS EN 1759DIN FlangesJIS FlangesWHEN ORDERING PLEASE SPECIFYEXAMPLEGasket styleFlexitallic Style “CGI” Spiral Wound GasketNominal pipe size (NPS)4”Pressure ratingClass 900Gasket standardASME B16.20Winding materials316L/Flexicarb (FG)Outer ring materialCarbon SteelInner ring material316L7.