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SPIRAL WOUND GASKETSA member of thewww.flexitallic.eu

FLEXITALLIC SPIRAL WOUND GASKETSContentsWorldwide Customer Service NetworkIntroductionGasket IdentificationAvailable Gasket MaterialsGasket SelectionPage23456Dimensional DataTable 1 – Style CG & CGI to ASME B16.20 to suit ASME B16.5 FLG – Imperial SizesTable 2 – Style CG & CGI to ASME B16.20 to suit ASME B16.5 FLG – Metric SizesTable 3 – Inner Ring Dimensions for Style CGI to ASME B15.20Table 4 – Style CG & CGI to suit small Dia Screwed or Slip-On FLGTable 5 – Maximum Bore of ASME B16.5 FLGTable 6 – Style CG & CGI to ASME B16.20 to suit Large Dia ASME B16.47 Series B FLG – Imperial SizesTable 7 – Style CG & CGI to ASME B16.20 to suit Large Dia ASME B16.47 Series B FLG – Metric SizesTable 7 – Style CG & CGI to ASME B16.20 to suit Large Dia ASME B16.47 Series A and BS 3293 FLGTable 8 – Style CG & CGI to suit Large Dia FLG – Imperial SizesTable 9 – Style CG & CGI to suit Large Dia FLG – Metric SizesTable 10 – Style CG & CGI to suit Large Dia FLGTable 11 – Style CG & CGI to BS 3381 to suit BS 1560 & ASME B16.5 FLG – Imperial SizesTable 12 – Style CG & CGI to BS 3381 to suit BS 1560 & ASME B16.5 FLG – Metric SizesTable 13 – Style CG & CGI to BS 10 FLGTable 14 – Style CG & CGI to BS 4865 Part 2 to suit BS 4504 FLGTable 15 – Style CG & CGI to suit DIN FlangesTable 16 – Style R to suit ASME B16.5 and BS 1560 FLGTable 17 – Style RIR to suit ASME B16.5 and BS 1560 FLGTable 18 – Style CG & CGI to suit JIS FLGTable 19 – Style CG & CGI to suit JIS FLGTable 20 – Style CG-RJ & CGI-RJ Replacements for Ring Type Joint GasketsTable 21 – Style 625 for Clamp-Type and other Non-Standard Flange 031Useful Technical DataAssembly TechniquesTable 22 – Recommended Torque CG Spiral Wound GasketsTable 23 – Recommended Torque CGI Spiral Wound GasketsTable 24 – Bolting Data for ASME B16.5 and BS 1560 FLGTable 25 – Facing Dimensions for ASME B16.5 and BS 1560 FLG323233343536Special Application GasketsSpecial CGI with Spiral Wound Outer Ring Gaskets fr Heat ExchangersCarrier Ring GasketsStyle LS & LSI Low Stress GasketsBoiler Cap and Manhole Cover GasketsTable 26 – Style M, MC & MCSTable 27 – Style TThermiculite 835 Heat Treated Inconel X-750 Spiral Wound GasketsMulit-Class Spiral Wound GasketsBaker Gaskets37373839404142434445For more information visit www.flexitallic.eu1

WORLDWIDE CUSTOMER SERVICE NETWORKInnovative Product RangeInside IndustryWe have a rich history of innovation, which has seenus lead the industry with many new products.We pride ourselves on not simply supplyingproducts, but by supporting customers witha detailed knowledge of their industry andapplication, so that products and services aretailored to their specific needs.Over the years, our products have gained a reputationfor quality, reliability and technology that is second tonone.Customised Engineering SolutionsOur Application Engineering, Production Engineeringand R&D teams work closely together to design,develop and manufacture bespoke sealing solutions.This unique approach means that we focus onproviding more than just a product, but also acomplete solution that adds genuine value toour clients.Global Distribution. Local SupportWe have been responsible for a number of trulyrevolutionary products, including Thermiculite ,Sigma and the Flange Rescue Gasket, which ensurewe are able to continually meet the ever morestringent requirements of our customers.Our Commitment to QualityWe place great emphasis on maintaining internationalquality standards such as ISO 9001, API 6A and API17D, to ensure we meet the highest possible standardsfor all our products and services.Our products are distributed through a globalnetwork of Allied Distributors.These carefully selected distribution partnersare strategically located within their territoryto deliver the best possible service and productsto our customers. This approach means ourproducts and know-how is available to theglobal industries we service.We also invest heavily in test and quality assuranceequipment to maintain our reputation for the highestquality products.Our materials are subjected to a wide range of testsas specified by statutory regulations and customerrequirements. These approvals enable our customersto make informed choices as to the suitability of aproduct for each and every application.Allied distributors2For more information visit www.flexitallic.eu

INTRODUCTIONFirst and ForemostThe concept of spiral wound gasket constructionwas originated by Flexitallic in 1912, inauguratingthe beginning of a new era in safe, effective sealing.The primary purpose for this development was theincreasingly severe temperatures and pressuresused by U.S. refinery operators in the first half ofthe century.Metal StripFiller MaterialThe necessity for a gasket to have the ability torecover cannot be over emphasised. The effectsof pressure and temperature fluctuations, thetemperature differential across the flange face,together with bolt stress relaxation and creep,demand a gasket with adequate flexibility andrecovery to maintain a seal even under these varyingservice conditions. The Flexitallic Spiral WoundGasket is the precision engineered solution to suchproblems, meeting the most exacting conditions ofboth temperature and pressure in flanged joints andsimilar assemblies and against virtually every knowncorrosive and toxic media.This publication is designed to facilitate thespecification and ordering of standard FlexitallicSpiral Wound Gaskets. Dimensional data for the basicstyles - Style CG, Style CGI, Style R and Style RIR aredetailed on respective tables.For more information visit www.flexitallic.eu3

GASKET IDENTIFICATIONGaskets are colour coded to help expedite the selection and identity of the gaskets you need. The colour on the outsideedge of the centering ring identifies both the winding and filler materials. The metallic winding material is designated bya solid colour. The filler materials are designated by colour stripes at equal intervals on the outside edge of the centeringring. Flexitallic colour coding meets the industry standard for metal and filler materials listed in ASME B16.20.METALLICWINDINGMATERIALSThe metallic windingmaterial is designated bya solid colour identificationaround the outside edge ofthe centering e347SSBlue310SSNo colour304LSSNo colour309SSNo colour430SSNo colourAlloy 20BlackTitanium PurpleInconel 600/625GoldIncoloy 800/825WhiteInconel X750No ColourHastelloy C276BeigeHastelloy B2BrownNickel 200RedZirconiumNo colourCarbon SteelSilverPTFEWhite StripeFlexicarb Gray StripeNON METALLICFILLERS4Monel OrangeDuplexNo colourThe gasket filler materialsare designated by anumber of stripes placedat equal intervals aroundthe outside edge of thecentering ring.Flexite Super Pink StripeCeramicLight Green StripeThermiculite 835Light Blue StripeFor more information visit www.flexitallic.eu

AVAILABLE GASKET MATERIALSMETAL WINDING STRIPAS STANDARDStainless Steel type 304316LOTHERSStainless SteelALLOY 20MONEL TITANIUM NICKEL 200INCONEL HASTELLOY INCOLOY type 304L309310316Ti317L32134743017-7PHtype 600625X-750type B2C276type 800825FILLER MATERIALFlexicarb flexible graphiteThermiculite 835Flexite Super PTFECeramicNon-sintered PTFEGUIDE RING MATERIALAS STANDARDCarbon SteelOTHERSStainless L TITANIUM NICKELINCOLOY type800825ALLOY 20HASTELLOY typeB-2C276Thermiculite , FLEXITALLIC’Sproprietary high-temperature,sealing material is comprisedof chemically exfoliated andthermally exfoliated vermiculite.This revolutionary patentedproduct simulates the structureof exfoliated graphite but withone notable exception. gasketsmade with Thermiculite maintaintheir integrity, even at extremetemperatures.Thermiculite is thermallystable, ensuring against thermaloxidation, at temperatures inexcess of 1800ºF (Thermiculite 835).INCONEL DUPLEXZIRCONIUM TANTALUM COPPERPHOS-BRONZENOTESSelected materials should be compatible with operating temperature and chemicals. If in doubt, contact Flexitallic Technical Department.If PTFE is subjected to temperatures above 250 C (500 F) decomposition starts to occur slowly, increasing rapidly above 400 C (750 F).Care should be taken to avoid inhaling the resultant fumes, which may produce hazardous effects.IDENTIFICATION REQUIREMENTSFor more information visit www.flexitallic.eu5

GASKET IDENTIFICATION WHAT GASKET SHOULD I SELECT?Style CG - Utilises anexternal ring which accuratelycenters gasket on flange face,provides additional radialstrength to prevent gasketblow-out and acts as acompression stop. A generalpurpose gasket suitable foruse with flat face and raisedface flanges up to andinclusive of class 2500.See note at bottom of page 8for inner ring requirements.Style CGI - A Style CGgasket fitted with internalring which gives an additionalcompression limiting stopand provides heat andcorrosion barrier protectinggasket windings andpreventing flange erosion.Suitable for use with flatface and raised face flanges.See note at bottom of page 8for inner ring requirements.Style R - Basic constructiontype. Inner and outerdiameters are reinforced withseveral plies of metal withoutfiller to give greater stabilityand better compressionand sealing characteristics.Suitable for tongue andgroove or male and female orgrooved to flat face flangeassemblies.Style RIR - Solid inner metalring acts as a compressionstop and fills the annularspace between flange boreand the inside diameter ofthe gasket.Designed toprevent accumulation ofsolids, reduce turbulentflow of process fluids andminimise erosion at flangefaces. Suitable for male andfemale pipe flanges.Published as an indication of which Flexitallic spiral wound gasket bestsuits different pipe flange configurations and service conditions.SELECTION GUIDEFlange FaceRaised FaceFlat FaceMale and FemaleTongue and GrooveFlat Face to RecessStyle CGStyle CGStyle R*Style R*Style R*Style CGI**Style CGI**Style RIR**Style RIR**Style RIR**RecommendedGasket StyleFor general dutiesRecommendedGasket StyleFor high pressure/temperature duty,also for gasketswith PTFE filler,corrosive orfluctuating pressureor temperatureservice conditions.*It is essential that Style R gaskets are fitted with a compression stop. Without a correctly dimensioned stop the gasket can easily be over-compressedresulting in failure. To provide a compression stop the depth of the tongue, groove or recess should be controlled to provide optimum compressed gasketthickness with metal to metal contact on the flange faces (see tables on Page 28 and 32).** See note at bottom of page 8 for inner ring requirements6For more information visit www.flexitallic.eu