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4300Catalog Seal-LokTMLiteO-RingFaceSealTubeFittings Seal-LokLiteIntroduction Parker'sSeal-LokLitefittingscombinethetraditionalversatility ofstainlesssteelSeal-Lokwiththeaddedfeatureofbeingadapt- abletothenewFlexFlangeproductline.Seal-LokLitefittings incorporatetheO-ringfacesealdesigntoformaleak-tightseal. Seal-LokLiteshapedfittingswithSAEstraightthreadadjust- ablestudsalsofeatureParker'snewRobustPortStud�,which provides improved reliability and easier assembly. Seal-Lok Litefittingsarenotadirectinterchangewithstandardindustrial O-ring face seal fittings. Seal-Lok Lite's leak-free, compact designmakesitsuitableforuseinapplicationsforlowpressure gasesandgenerallightdutyindustrialsystems. DesignandConstruction Fig.B1�Seal-LokLiteFittings TheSeal-LokLitefittingconsistsoffourmaincomponents:a body,asleeve,anO-ringandanut.Thebody,sleeve,andnut aremanufacturedfrom316stainlesssteel. The Seal-Lok Lite Fitting Body: Seal-Lok Lite fittings are manufactured in the most popular stainless steel sizes and configurations.ThebodyismanufacturedwithParker'sCORG (CaptiveO-ringGroove),whichkeepstheO-ringcaptiveduring installation.Straightbodiesaremachinedfromcolddrawnbar stock,ensuringconsistentdimensionaltolerances,improved strengthandbettersurfacefinish.ShapedSeal-LokLitefittings aremanufacturedfromaone-pieceforgedconstruction.This forgedconstructionprovidesaddedstrengthandlongerservice life,whileeliminatingthepotentialleakpathassociatedwith multi-componentbrazedfittings. TheSeal-LokLiteFittingNut:Seal-LokLitetubenutsare machinedfromcolddrawnbarstock.TheSeal-LokLitetube nutisnotinterchangeablewiththestandardORFStubenut, Fig.B2�CaptiveO-ringGroove(CORG) asitismuchshorter,morecompact,andincorporatesametric thread. TheSeal-LokLiteParflangeSleeve:Thepreferredmethod ofmakingaSeal-LokLiteconnectionisbyusingtheParker Parflangemachinetocreatethe90� flangeonthetubeend. O-ring Parflange Thesleeveprovidesacontactshoulderforthenutandsupports BrazeSleeve Sleeve theflangeandtubing.TheParflangeprocessprovidesthefol- lowingadvantages: � Severaltimesfasterthanbrazing � Nospecialpre-orpost-flangecleaning � Cleanerandsaferthanbrazing � Eliminatesapotentialleakpathassociatedwithbraze joints The Seal-Lok Lite fitting uses a standard Parflange sleeve andtooling.SeeEquipmentsectionfortheavailableParflange tooling. TheSeal-LokLiteBrazeSleeve:Asecondmethodofsleeve attachmentiswiththebrazesleeve.Thesleeveisbrazedtothe FittingBody tubeendasshowninFig.B3.Theflat,smoothsurfaceofthe Nut brazesleevesealsagainsttheO-ringwhenfullyassembled.The holdingpowerisprovidedbythebraze.Anadditionalmethodis abuttweldconnector(TLW1)thatisalsousedwithatubenut. Fig.B3�Seal-LokLiteunioncutawaywithflangedandbrazed Itisdesignedespeciallyfororbitalwelders. assemblies B3 ParkerHannifinCorporation TubeFittingsDivision Columbus,Ohio http://www.parker.com/tfd
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