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fle xitallicInformation Package and Data Sheets
Spiral Wound Gasketsflexitallic informationPROUDDISTRIBUTORofSpiral Wound: FlexitallicintroductionThe concept of spiral wound gasket construction was originated byFlexitallic in 1912, inaugurating the beginning of a new era in safe,effective sealing. The primary purpose for this development was theincreasingly severe temperatures and pressures used by U.S refineryoperators in the first half of the century.The necessity for a gasket to have the ability to recover cannot beover emphasized. The effects of various pressure and temperaturefluctuations, the temperature differential across the flange face,together with bolt stress relaxation and creep, demand a gasket withadequate flexibility and recovery to maintain a seal even under thesevarying service conditions. The Flexitallic spiral wound gasket is theprecision engineered solution to such problems, meeting the mostexacting conditions of both temperature and pressure in flangedjoints and similar assemblies and against virtually every knowncorrosive and toxic media.This publication is designed to facilitate the specification andordering of standard Flexitallic spiral wound gaskets. Dimensionaldata for the basic styles – Style CG, Style CGI, Style R, and Style RIRare detailed on respective tables.2-295 Superior Blvd. Mississauga, Ontario L5T 2L6T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.com
flexitallic informationGasket IdentificationGaskets are colour coded to help expedite the selection and identity of the gaskets you need. Thecolour 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 designatedby colour stripes at equal intervals on the outside edge of the centering ring. Flexitallic colourcoding meets the industry standard for metal and filler materials listed in ASME B16.20.Solid Colour CodeStripe Colour xicarb(Maroon)317L(Pink)Flexite Super(Turquoise)321SS(Light Green)Ceramic(Blue)347SS(Light Blue)Thermiculite 835(No Colour)310SS(No Colour)304LSS(No Colour)309SS(No Colour)430SS(Black)Alloy 20(Purple)Titanium(Gold)Inconel 600/625(White)Incoloy 800/825(No Colour)Inconel X750(Beige)Hastelloy C276(Brown)Hastelloy B2(Red)Nickel 200(No Colour)Zirconium(Silver)Carbon Steel(Orange)Monel(No Colour)DuplexMulti-Class Spiral Wound GasketClass 150Class 300Outer RingGasketFlange One gasket accommodates both Class 150 and 300 flanges(Class 150 to 600 in NPS ½ through NPS 3) Reduces inventory requirements Easy to install Less than half the studs Multiple metal windings & fillers available Also available with inner rings2-295 Superior Blvd. Mississauga, Ontario L5T 2L6T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.com
Spiral Wound Gasketsflexitallic informationAvailable Gasket MaterialsMETAL WINDING STRIP AS STANDARDStainless Steeltype 304, 316LOTHERSStainless Steeltype 304L, 309, 310, 316Ti, 317L, 321,347, 430, 17-7PHALLOY 20MONELTITANIUMNICKEL 200INCONELtype 600, 625, X-750HASTELLOYtype B-2, B-3, C276INCOLOYtype 800, 825DUPLEXZIRCONIUMTANTALUMCOPPERPHOS-BRONZEFILLER MATERIALFlexicarb flexible graphiteThermiculite 835Flexite SuperPTFEMicaCeramicNon-sintered PTFEGUIDE RING MATERIAL AS STANDARDCarbon SteelThermiculite, Flexitallic’s proprietaryhigh-temperature, sealing material is comprised of chemically exfoliated and thermallyexfoliated vermiculite.This revolutionary patented product simulates the structure of exfoliated graphite butwith one notable exception gaskets madewith Thermiculite maintain their integrity,even at extreme temperatures.OTHERSStainless Steeltype 304, 304L, 316, 316L, 316Ti, 310,321, 347, 410, 600, 625INCONELMONELTITANIUMNICKELINCOLOYtype 800, 825ALLOY 20HASTELLOYtype B-2, B-3, C276Thermiculite is thermally stable, ensuringagainst thermal oxidation, at temperature inexcess of 1800 F (Thermiculite 835).notesSelected materials should be compatible with operating temperatures and chemicals. If in doubt, contact Flexitallic Technical Department. If PTFE issubjected to temperatures above 250 C (500 F) decomposition starts to occur slowly, increasing rapidly above 400 C (750 F). Care should be taken toavoid inhaling the resultant fumes, which may produce hazardous effects.identification requirements Inner ring material stamped on inner ring or outer ring Nominal Pipe Size and pressure class. Not shown when gasket ismanufactured to special dimensions Outer ring material when other than CS2-295 Superior Blvd. Mississauga, Ontario L5T 2L6 Winding metal and filler material Manufactured to ASME B16.20 latest edition or applicable dimensionaland quality specificationsT: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.com
flexitallic informationSelection 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 forgaskets with PTFE fillercorrosive or fluctuatingpressure or temperatureservice conditionsPublished as an indication of which Flexitallic spiral wound gasket best suits different pipe flange configurations and service 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-compressed resulting in failure. To provide a compression stop the depth of the tongue, groove or recess should be controlled to provide optimum compressed thickness with metal to metal contact on the flange faces.Gasket Selection: What Style Of Gasket Should I Select?STYLE CGSTYLE CGISTYLE RSTYLE RIRUtilizes an external ring whichaccurately centers gasket on flangeface, provides additional radialstrength to prevent gasket blow-outand acts as a compression stop. Ageneral purpose gasket suitable foruse with flat face and raised faceflanges up to and inclusive of class2500. See note towards end of document for inner ring requirements.A style CG gasket fitted with internal ring which gives an additionalcompression limiting stop andprovides heat and corrosion barrierprotecting gasket windings andpreventing flange erosion. Suitablefor use with flat face and raisedface flanges. See note towards endof document for inner ring requirements.Basic construction type. Inner andouter diameters are reinforcedwith several plies of metal withoutfiller to give greater stability andbetter compression and sealingcharacteristics. Suitable for tongueand groove or male and female orgrooved to flat face flange assemblies.Solid inner metal ring acts as acompression stop and fills theannular space between flange boreand the inside diameter of thegasket. Designed to prevent accumulation of solids, reduce turbulentflow of process fluids and minimizeerosion at flange faces. Suitable formale and female pipe flanges.2-295 Superior Blvd. Mississauga, Ontario L5T 2L6T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.com
Spiral Wound Gasketsflexitallic informationDimensional Datastyle cg & cgi gaskets to suit standard raised face and flat face flangesSpecial GasketsGaskets of special design can be engineered and fabricated using thesame basic fundamentals of Flexitallic spiral wound gasket designand construction to cover a wide range of applications in installationsfor which there are no industry-wide standards. Special gaskets havebeen designed for valves, pumps, compressors, turbines, boilers,heat exchangers, etc. Consult with Flexitallic engineers as early in thedesign stage as possible.Government SpecificationsFlexitallic spiral wound gaskets are available in accordance withmilitary specifications MIL-G-24716, and MIL-G-15342, latestrevisions. When making an inquiry, refer to the proper governmentspecification number.Flexitallic style CG and CGI Spiral Wound gaskets can bemanufactured in accordance with all relevant gasket standards tosuit the following flange designations. Please note that gaskets fornon-standard flanges are also readily available.ASME B16.5BS 1560BS 10ASME B16.47 SERIES B (API 605)ASME B16.47 SERIES B (MSS SP 44)BS 4504DIN 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 Material316L2-295 Superior Blvd. Mississauga, Ontario L5T 2L6T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.com
Standard style R gaskets embody all of the exclusive features of Flexitallicdesign for keeping all compression values in balance with bolting and forproviding the adequate resilience to compensate for the variable stressesencountered in service. Standard Style R gaskets are manufactured to anominal thickness of 0.125” (3.2mm). The optimum compression is in therange of 0.090” to 0.100” (2.3mm to 2.5mm) thick.Special Style R gaskets are adaptable to non-standard flanges and canbe designed and manufactured according to specifications for high andlow pressure applications and for severe corrosive conditions. Whenordering Special Style R gaskets for non-standard flanges and for specialapplications, furnish complete data on Flexitallic Gasket EngineeringData Form.There are three types of Style R gaskets:1) Style R-1 indicates gaskets for use with large male & female flanges2) Style R-3 indicates gaskets for use with large tongue & grooveflanges3) Style R-4 indicates gaskets for use with small tongue & grooveflanges.NOTE: The following style R gaskets are interchangeable:*As a general rule, the use of Flexitallic Spiral Wound gaskets with smallmale and female flange facings is not recommended.Dimensional limitations established by the proportions of the small tongueand groove facings limit the possibility of increasing gasket dimensions toimprove the load carrying capacity in the higher pressure series. For thisreason it is suggested that large tongue and groove facings be selected fornew construction when class 900, 1500 and 2500 flanges are to be used.Style R-4 gaskets may be compressed an additional amount whenexposed to the higher bolt loads, but not to the degree that the gasket willbe crushed due to the radial support provided by the confining groove.2-295 Superior Blvd. Mississauga, Ontario L5T 2L6Style R-1 and R-3 gaskets ¼” sizes – Classes 150, 300, 400, and 600 are interchangeable ½” sizes – Classes 150, 300, 400, 600, 900, 1500, and 2500 (R-3only) are interchangeable All R-1 and R-3 gaskets in Classes 300, 400, and 600 areinterchangeable within their size category All R-1 and R-3 gaskets in Classes 900 and 1500 are interchangeablewithin their size categoryStyle R-4 gaskets ½” sizes – interchangeable with all NPS ½” R-1 and R-3 gasketswithin the same pressure rating ¾” interchangeable with all ¾” R-1 and R-3 gaskets within the samepressure rating All R-4 gaskets in Classes 300 through 2500 are interchangeablewithin their size category.T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.comflexitallic informationStyle R (FOR USE WITH MALE AND FEMALE TONGUE AND GROOVE ASME B16.5 & BS 1560 FLANGES)
Spiral Wound Gasketsassembly techniquesflangesGasket Style SelectionEnsure that the correct style of gasket has been selected for theappropriate application.Check that the flange faces are clean, in goodcondition and with a turned surface finish withinthe following range Ra 3.2 to 6.3 micro metres(125 to 250 micro inches)Note: All PTFE filled Spiral Wound Gaskets for raised face and flatface flanges should utilize an inner and outer guide ring. When usingStyle R Spiral Wound Gaskets ensure that a compression stop isincorporated into the flange arrangement.REQUIRED GASKET COMPRESSIONFor optimum sealing performance Flexitallic Spiral Wound Gasketsshould be compressed to the following thicknesses:Initial Gasket ThicknessRecommended CompressedThickness0.0625in (1.6mm)0.050in/0.055in (1.3/1.4mm)0.100in (2.5mm)0.075in/0.080in (1.9/2.0mm)0.125in (3.2mm)0.090in/0.100in (2.3/2.5mm)0.175in (4.5mm)0.125in/0.135in (3.2/3.4mm)0.250in (6.4mm)0.180in/0.200in (4.6/5.1mm)0.285in (7.2mm)0.200in/0.220in (5.1/5.6mm)Stress Relaxation of Bolt Steels and Alloysat Upper Temperature Limits100Tightening ProceduresControlled tightening procedures should be usedwhen installing spiral wound gaskets. Flexitallicrecommends that the use of hydraulic tensioningequipment be considered where possible for boltdiameters 1-1/4” and above. Please refer toFlexitallic's Design Criteria for further technicalinformation.BoltingEnsure that the correct bolting material is utilizedto suit the operating conditions, taking into accountthe limitation of low yield strength bolts. Ensurethat the use of bolt lubrication is employed. Fortorque tightening methods Flexitallic recommendsthe use of molybdenum disulphide bolt lubricationor similar nickel based compound. Do not applyany lubricants when using PTFE coated fasteners,Consult with the coating manufacturers for productspecific friction coefficients.B8The Importance of Bolt LubricationB17/66075100 (10)B&MLubricated withmolybdenum disulphide50B80A2500212392572B16752932As recievedcondition frommanufacturer80 (8)60 (6)Dry bolt withno lubrication40 (4)B7Carbon SteelLoad KN (tons)Residual Stress (% of initial stress retainedafter 1000 hours)flexitallic informationTechnical Data20 (2)11121292 147227 (20)Temperature (F)2-295 Superior Blvd. Mississauga, Ontario L5T 2L654 (40)81 (60)108 (80)Torque Nm (lbft)T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.com136 (100)163 (120)
The LS gasket offers the same high integrity seal associated with thespiral wound gasket however, the LS and LSI has been designed insuch a way that compression and sealing requirements are achievedunder very low seating stresses. These gaskets are intended for useon class 150 and 300 applications, where customers traditionallydo not use spiral wound gaskets due to concerns about exceedingallowable design stresses.Colour coded and stamped centering ring foreasy product identificationSpiral wound design significantlyreduces gasket creepMetallic inner ringcontains and protectssealing elementsThe traditional spiral wound gasket has its steel windings protrudingabove the compression stop; this requires a significant loading stressto compress the gasket to its optimum operating thickness. The LSand LSI gaskets have only soft Flexicarb or PTFE filler protrudingabove metal windings and guide ring; therefore as the gasket iscompressed, the Flexicarb or PTFE filler is readily compressed thusproducing the sealing mechanism at an earlier stage as compared tothe conventionally manufactured spiral wound gasket.The LSI gasket retains more of its initial stress or tightness, evenwhen subjected to high temperatures, unlike PTFE sheet gaskets.Available in a variety of metals, engineered to suit specificapplications.Available with Flexicarb orPTFE fillerLow Stress construction seals at sheetgasket torquesMetallic centering ring provides blowout resistanceand compression stopLOWER BOLT STRESS-REDUCED FUGITIVE EMISSIONSFlexitallic recommended minimum bolt torque figures for use withthe "LSI" gasket on ASME/B16.5 flanges.NPS (IN.)TORQUE FT.LBS.NPS (IN.)TORQUE FT.LBS.1/2255833/4256831258831 1/425101331 1/22512133250142042 1/25016204350182953 1/25020296Note: Minimum required torques may be even lower dependingon gasket size and bolt materials. Please contact Flexitallic'stechnical department for more information.45024417*Above torque values are for class 150 ASME flanges.2-295 Superior Blvd. Mississauga, Ontario L5T 2L6T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.comflexitallic informationSTYLE LS & LSI LOW STRESS RANGE OF SPIRAL WOUND GASKETS
Spiral Wound Gasketsflexitallic informationThermiculite 835 Heat Treated Inconel X-750 Spiral Wound Gasketincreased safety. proven results. proven cost savings.Severe cyclic conditions? For the most demanding cyclic conditions,the choice is Flexitallic’s Thermiculite 835 Spiral Wound Gasket withHeat Treated Inconel X-750 winding. Differential thermal expansionand contraction of components in a bolted joint, due to the effects ofcyclic conditions, requires that extra resiliency be built into the jointor the gasket to compensate for fluctuating load conditions.Normal gasket materials do not provide sufficient resiliency, andtherefore cannot compensate for the adverse effects of cyclicconditions. Special Heat Treated Inconel X-750 gasket materialshave been developed by Flexitallic to ensure that joint integrity ismaintained during thermal cycles.In OEM and End User testing comparing the performance of standard316L SS windings vs. Heat Treated Inconel X-750 winding materialsignificantly increased the yield strength resulting in increased springback before leakage, or usable recovery.Thermiculite 835 Spiral Wound Gasket with heat treated Inconel X-750 WindingFull Scale Test Results (averaged)Gasket Dimensions 40-5/8" x 42" x 0.175"Winding Material316L SSHeat Treated Inconel X-750Initial Thickness0.178"0.179"Compressed Thickness0.122"0.121"Total Springback0.011"0.013"0.0038"0.0078"Springback to Leakage @2500psi Test PressureNote: When ordering this material it is important thatyou specify PRECIPITATION HARDENED INCONEL X750WINDINGS, OR INCONEL X750HT.Specify Flexitallic’s proprietary precipitation hardened Inconel X-750 windings inapplications where there are concerns about: Cyclic conditions Differential thermal expansion and contraction Radial shear Bolt relaxation Hot torqueing Mating flanges of dissimilar metals2-295 Superior Blvd. Mississauga, Ontario L5T 2L6T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.com
USAGE: Flat and raised faced diameter flanges up to and inclusive of class 2500Materials and Maximum T LimitsSpiral Wound Filler GuideMaximum TemperatureMinimum TemperatureFiller TypeThermiculite 835FlexicarbPTFEFlexite SuperCeramic1800 F842 F500 F480 F2300 F982 C450 C260 C249 C1260 C 400 F 400 F 300 F 150 F 150 F 240 C 240 C 184 C 101 C 101 CDesign ParametersGasket ThicknessMaximum InsideDimensionTolerance CapabilitiesRecommendedFlange WidthRecommendedCompressedThicknessGasket DiameterInside DiameterOutside Diameter0.125"up to 20"1"0.090"/0.100"up to 10" 1/64" 1/32"0.125"20" to 40"3/4"0.090"/0.100"10" to 24" 1/32" 1/16"0.175"up to 40"1"0.125"/0.135"24" to 60" 3/64" 1/16"0.175"40" to 60"1"0.125"/0.135"0.175"60" to 70"7/8"0.125"/0.135"0.175"70" to exicarb/SSFlexite/SS0.285"185"1"0.200"/0.220"Gb (psi)23002600a0.2370.230Gs (psi)1315required surface finish 125-250 Micro inch RaDesign Factorsapplicable standards ASME B16.20 BS3381 Suited for ASME B16.5 and B16.47 series flangesASME (AII)m3y10,000 psitechnical benefits Metallic winding suited for cyclic loadingOuter ring center gasketInner/outer ring provides additional blow-outstrengthInner/outer ring provides a compression stop Prevents flange erosionPrevents inward bucklingReduces turbulent flowRecommended for high pressure/temperatureapplicationsThis data sheet relates to the material as supplied. The information contained herein is given in good faith, but no liability will be accepted by the company in relation to same. The acquisition of additional information may necessitate revisions to partsor all of this data sheet, and such information will be supplied as it becomes available. As the company’s products are used for a multiplicity of purposes, and as the company has no control over the method of their application or use, the companyexcludes all conditions or warranties, express or implied, by statute or otherwise, as to their products and/or their fitness for any particular purpose. Any technical co-operation between the company and the customer is given for the customer s assistance only and without liability on the part of the company.2-295 Superior Blvd. Mississauga, Ontario L5T 2L6T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.comflexitallic informationProduct Profile: Style CGI
flexitallic informationProduct Profile: Style CGUSAGE: The style CG is a spiral wound gasket for flat and raised face diameter flanges up to and inclusive of class 2500Materials and Maximum T LimitsSpiral Wound Filler GuideMaximum TemperatureMinimum TemperatureFiller TypeThermiculite 835FlexicarbPTFEFlexite SuperCeramic1800 F842 F500 F480 F2300 F982 C450 C260 C249 C1260 C 400 F 400 F 300 F 150 F 150 F 240 C 240 C 184 C 101 C 101 CDesign ParametersGasket ThicknessMaximum InsideDimensionTolerance CapabilitiesRecommendedFlange WidthRecommendedCompressedThicknessGasket DiameterInside DiameterOutside Diameter0.125"up to 20"1"0.090"/0.100"up to 10" 1/64" 1/32"0.125"20" to 40"3/4"0.090"/0.100"10" to 24" 1/32" 1/16"0.175"up to 40"1"0.125"/0.135"24" to 60" 3/64" 1/16"0.175"40" to 60"1"0.125"/0.135"0.175"60" to 70"7/8"0.125"/0.135"0.175"70" to exicarb/SSFlexite/SS0.285"185"1"0.200"/0.220"Gb (psi)23002600a0.2370.230Gs (psi)1315required surface finish 125-250 Micro inch RaDesign Factorsapplicable standards ASME B16.20 BS3381 Suited for ASME B16.5 and B16.47 series flangesASME (AII)m3y10,000 psiThis data sheet relates to the material as supplied. The information contained herein is given in good faith, but no liability will be accepted by the company in relation to same. The acquisition of additional information may necessitate revisions to partsor all of this data sheet, and such information will be supplied as it becomes available. As the company’s products are used for a multiplicity of purposes, and as the company has no control over the method of their application or use, the companyexcludes all conditions or warranties, express or implied, by statute or otherwise, as to their products and/or their fitness for any particular purpose. Any technical co-operation between the company and the customer is given for the customer s assistance only and without liability on the part of the company.2-295 Superior Blvd. Mississauga, Ontario L5T 2L6T: (905)-564-0807F:(905)-564-4812E: sales@specialtygaskets.com
Spiral Wound: Flexitallic introduction The concept of spiral wound gasket construction was originated by Flexitallic in 1912, inaugurating the beginning of a new era in safe, effective sealing. The primary purpose for this development was the increasingly severe temperatures and pressures used by U.S refinery operators in the first half of the century. The necessity for a gasket to have the .
