The new dimension in mechanical seal technology - Etusivu 62 e.pdf · 6 The pairing of sliding...

DiamondFacesThenewdimensioninmechanicalsealtechnology

Your partner for sealing technology worldwide

ApplicationMechanical Seals

62 E

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070907df_handout62E.indd 1 10.09.2007 16:36:12 Uhr

�

Introduction 3

Applications 4

Maincausesofpumpdamage 5

DiamondFaces®technology 7

Manufacturingtechnology 1�

Customerbenefits 14

References 16

Table of contents


3

Introduction

Anysystemcanonlybeasfunctionalasthelifespanofitsweakestcomponent.

Thisruleappliestoallproductsingeneral–andtomechanicalsealsinparticular.Investigationshaveshownthatthemechanicalsealisacriticalcomponentinpumps.Themostfrequentcauseofdamagetomechanicalsealsisstillthedamagetotheslidingfacesduetoinadequatelubricationwhichresultsdry-running.

This is precisely where the DiamondFaces® innovation comes in.

EagleBurgmannhasdesignedtheinnovativeDiamondFaces®microcrystallinediamondcoatingformechanicalsealsespeciallytocounterthisoperatingconditions.Throughintensecollaborationwithourcustomers,suppliersandinthiscaseespeciallywiththeFraunhoferISTinBraunschweig,wehavenowdevelopedthismanufacturingtechnologyformassproduction.

WithDiamondFaces®,EagleBurgmannhaslaunchedadevelopmentonthemarkettoprovideoutstandingwearprotectioninconditionsofdry-running,mixedfrictionandabrasivemedia.Asaresult,theservicelifeofmechanicalsealshasbeenincreasedmanytimesoverforalargenumberofapplications,themaintenanceintervalscorrespondinglyextendedandthelifecyclecostssignificantlyreduced.

DiamondFaces® from EagleBurgmann – the innovation for longer running times and greater reliability for your pumps and mixers.


4

Applications

Oil, GasMultiphaseapplications

Slurry applications Chemical industryMaximumchemicalresistance

Refi neriesLow-boiling-pointmedia

Pharmaceutical industryDry-runningwithoutproductcontaminating

Building servicesHotwater

Recommended applications

MechanicalsealsfromEagleBurgmanncoveranextremelywiderangeofapplicationsinnumerousindustrialsectors.Theyareusedasshaftsealsinpumps,agitators,compressorsandotherrotarymachineswhichhandleliquidandgaseousmedia.Mechanicalsealsareusuallysafeandreliablecomponentswhich,whenworkingcorrectly,generallyoperatewear-free.

But,whenlubricationisinsufficientorwhenthesealsarerunningdry,theslidingfacesbecomeextremelyhotwithinashorttime,leadingtotheirdestructionandtotalbreakdown.

TheDiamondFaces®innovationcomesintoitsownwhenitisthereliabilityofpumpsandmixersthatmatters.Thespeciallydevelopedcrystallinediamond

coatingoffersthesameadvantagesasnaturaldiamondandiseminentlysuitableforapplicationsintheoilandgasindustries,thechemicalandpharmaceuticalindustries,refineries,buildingservicesandslurryapplications.


5

Internationalanalyseshaveclearlyshownthatmechanicalsealsareresponsiblefor39%ofthedamagetopumpsandarethereforethemostfrequentcause.Abreakdownofthecostsaccountedforbypumprepairsalsoclearlyshowsthatmechanicalsealsrepresentthelargestsinglefactorat44%.

Outofthekeycomponentsofapump,themechanicalsealhassofarbeentheonewiththeshortestaverageservicelife.ItthereforehasamajorinfluenceontheMTBF/MTBRvaluesofthesystemasawhole.

TheprimaryaimofalloperatorsmustbetosignificantlyimprovetheMTBF/MTBRvaluesofthepump/systemandminimizetheprocessdowntimecostswhichresultfromunplannedinterruptions.

Theproblem-freeoperationofpumpsisanessentialrequirementforcost-effectiveandreliableoperationofplantsandsystems.

Main causes of pump damage

n Mechanicalsealn Miscellaneousn Impellern Operationn Couplingn Housingn Rollerbearings

1% 3%

15%

39%

34%

3%5%

�%

5%

18%

44%

30%

1%

Causes of pump failure Pump repair costs

Source: OMV AG, Pumps in Process Engineering, 2002


6

Thepairingofslidingfacesremainsthemostcriticalpartofamechanicalseal.Insufficientlubricationandtheassociateddry-runningwillcauseimmediatedestructionoftheslidingfacesiftwohardmaterialsarepairedtogether.Thisriskcanbereducedtosomedegreebypairingasoftmaterialwithahardmaterial(carbon-SiC)but,inthiscase,thecarbonwearsignificantlycompromisestheservicelifeofthecomponent.

DamageanalysescarriedoutbyEagleBurgmannhaveshownthat55%ofallmechanicalsealdamagesarecausedbydry-running.Thus,approximately�1%ofallpumpdamagesarecausedbydry-runningofthemechanicalseal.

TheanalysesperformedbyGrundfos,who(accordingtotheirownpublications)examinedthecausesofaround1.3millionpumpfailures,concludedthatdry-runningthesealwasresponsiblefor18%oftheoverallmalfunctions.

Source: EagleBurgmann, damage analysis, 2006

n Dry-runningn Normalwearn Materialresistancen Installationfaultsn Miscellaneous

8%

�5%

7%

5%55%

Analysis for breakdown of mechanical seals

DiamondFaces® can increase the service life of mechanical seals many times over for a large number of applications because of the excellent wear protection this innovation provides where dry-running, mixed friction or abrasive media are concerned – and therefore considerably extend the maintenance intervals.


7

Graphitehas3covalentbonds,whereasdiamondhas4covalentbonds.Theincreasedhardnessresultsfromthehigherpackingdensityofthediamondstructure.Incontrasttodiamond,theatomiclatticestructureof,forexample,graphitecanbeshiftedslightly,whichisthereasonforthegoodlubricatingpropertiesofgraphiteassociatedwithhighwear(materialremoval).

DiamondFaces®isasyntheticallymanufactured,ultrapurediamondwiththesameoutstandingpropertiesasthenaturalstone.Amicrocrystallinecoatingof8µmthicknessonsiliconcarbidesealfaceswhichiscapableofperformancespreviouslyunheardofformechanicalseals.

What is a diamond?

Diamondisthehardestnaturalmaterialthatisknown.Thedifferencebetweendiamondandgraphiteliesinthenumberofbondsandthenumberofcovalentspacingsbetweentheatomiclattices.

Diamond is not DLC (Diamond Like Carbon)

DLCisacoatingprocesswhichEagleBurgmannusesingas-sealingtechnology.DLCcoatingshaveahighproportionofgraphite(ashighas60%insomecases)sothematerialpropertiescanbeanywherebetweenthoseofgraphiteandthoseofdiamond.DiamondFaces®technologyontheotherhandusespurecrystallinediamond.

DiamondFaces® technology

Diamond Graphite

sp3=4covalentbonds sp�=3covalentbonds


8

So why choose a diamond coating?

TheSiC/SiCmaterialpairingswhichhavebeenincreasinglyfavoredforsealfacesduringthelast10-15yearsofferexcellentchemicalresistance,highresistancetoabrasionandarevirtuallywear-free,butonlywhenadequatelubricationisprovidedinthesealinggap.

Anyformofinsufficientlubricationduetodry-runningresultsinmassivetemperatureincreasesanddamagestheslidingfacesandsecondaryseals(O-rings).Inextremecases,thetimetototalfailureoftheslidingfacesmaybejustamatterofafewseconds.

CombiningSiCsealfaces(seathousings)withtheDiamondFaces®coatingallowslongerdryperiods(uptoseveralhours)withareducedbuild-upofheat.

DiamondFaces®hasthefollowingoutstandingcharacteristics:1.Lowcoefficientoffriction�.Virtuallynowear3.Outstandingcoatingadhesion4.Optimumsurfaceevenness

1. Considerable reduction of the coeffi cient of friction

Extensivegeneralandapplication-specifictestshavebeenperformedinordertooptimizethecompositematerial,SiC-diamond.Themostimportantobjectivewastominimizethecoefficientoffrictionduringdry-running(gaslubricationusingN�)andwetfriction.TheoutstandingperformanceoftheinnovativeDiamondFaces®coatinghasbeenconfirmedduringtestsatEagleBurgmannandFraunhoferIST.

Thecoefficientoffrictionmeasuredwhendry-runningcoatedsiliconcarbidesealfaces(DiamondFaces®)waslowerthanthatmeasuredforanSiC/SiCstandardpairingbyafactorof5.Duetotheexcellentdry-runningproperties,themicrocrystallinediamondcoatingwithstooduptoseveralhoursofdry-runningwithreducedbuild-upofheat.Thishasbeenconfirmedbyextensivefieldtestsinvariousapplications.

Coef

ficien

toff

rictio

nµ

1,0

0,8

0,6

0,4

0,�

0,0

0 �000 4000 6000 8000 10000 1�000 14000

DiamondSiCuncoatedDLCSiC+graphite

TestparametersSlidingvelocity:�m/sContactpressure:0.3N/mm�

Medium:dry-runningwithN�

Runningtime[s]

Source: EagleBurgmann test-bench results, coeffi cient of friction for gas lubrication using dry nitrogen


9

The essential advantages:n Reducedsliding-facefrictionreduces

theheatgeneratedbyfrictionandthereforeincreasesdry-runningreliability.

n Theminimizedfrictionreducestheamountofheatgeneratedinthesealandthusprotectsthesecondarysealingelements(O-rings).

n Thereducedpowerconsumptionoftheslidingfacesallowsreducedcoolingofdoubleactingsystems.

n Highertemperatureapplicationlimitsforlow-boiling-pointmedia

nThepowerdemandsofthepumparelower

ThedifferencebetweenDiamondFaces®andSiC/SiCstandardpairingwasevengreaterwithliquidlubrication.Inthiscase,thecoefficientoffrictionwasupto8timeslower.

Source: Fraunhofer IST test-bench results, deionized water, vg = 7.6 m/s, p = 1 MPa

Coef

ficien

toff

rictio

nµ

0.10

0.08

0.06

0.04

0.0�

0.0000:00 04:00 08:00 1�:00 16:00 �0:00

Runningtime[s]

SiC/SiCuncoated

Running-inpeak

SiC/SiCcoated


10

2. Virtually no wear

Diamondisfamousforitsunsurpassedhardnessandexcellentchemicalandthermalresistance.Itisextremelyimportanttodistinguishbetweendiamond-likecarboncoatings(DLC)–whichEagleBurgmannhasbeenusingformanyyearsforanti-wearprotectioningas-lubricatedmechanicalseals–andthenewDiamondFaces®coating.TheDiamondFaces®coatingisacrystallinediamondcoating.

Thediamondcoatingischaracterizedbyvirtuallynowear,evenwhendiamondcoatingsarerunningagainsteachother.The8-µmthickmicrocrystallinediamondcoatingthereforeguaranteesanextremelylongservicelifecomparedwithuncoatedSiCsealfaces.

Wear rateTheaveragewearrateduringdry-runningconditions(N�)isbetween0.08µmand0.�µmperhourandisdeterminedbydifferentialmeasurementsbeforeandaftertribologicaltests.

Coef

ficie

nto

ffric

tion

µ(N

�)

0,8

0,7

0,6

0,5

0,4

0,3

0,�

0,1

0,00 �000 4000 6000 8000 10000 1�000 14000 16000

Runningtime[s]Wearrate0.08µm/h

300

�50

�00

150

100

50

0

Tem

pera

ture

[°C]

Source: Fraunhofer IST test bench results, random checking with N2 gas lubrication and wet medium deionized water

The essential advantages:n Virtuallynowear

(4extremelylongservicelife)n Outstandingwearprotectioneven

withmediawithhighsolidscontentsincediamondisthehardestknownmaterial

n Coatedhard/hardpairing4longservicelife(withacarbon/SiCpairingtheservicelifewouldbelimitedbythecarbonwear)

nNoreductionintheapplicationlimitsbecauseoftheinstabilityofcarbon,nosupportringsnecessary

n Longservicelifeevenduringpartialdry-running

nMaximumchemicalresistance4enablesstandardization

10.000HV Hardness 1.000…4.000HV1.150GPa Young‘s modulus 30…��0GPa�.000W/mK Thermal conductivity 0,1…10W/mK

Crystalline diamond coating

Crosssection

DLC (Diamond Like Carbon)

Crosssection

TopviewTopview


11

3. Outstanding coating adhesion

Thediamondformsachemicalbondwiththesiliconcarbideandtheresultantcoatingadhesionexceedsallknownpracticalrequirements.Thecoatingadhesioniscontinuouslycheckedwithtensiletestsandsandblastingtests.Duringlong-termteststoo,therewasnodetachmentofthecoating.

4. Optimum surface evenness

Theevennessofthesealingfacesisessentialforthefunctionalreliabilityofmechanicalseals.Inordertoguaranteefunctionalreliability,theevennessofthecoatedslidingfacesmustliewithinthetolerancerangeofuncoatedSICslidingfaces.WithDiamondFaces®,theoptimumevennessofthesealingfacesisguaranteed.

Source: EagleBurgmann, quality assurance

Source: EagleBurgmann, tensile test bench


1�

WeatEagleBurgmannhavebeenmakingsignificantcontributionstosealingtechnologyformorethan1�0years.Weoperateonthebasisofintensecooperationwithourcustomersandsuppliersaswellasresearchinstitutesinordertoprovidesolutionstodemandingchallenges.DiamondFaces®representsamilestoneinthedevelopmentofmechanicalsealtechnologyandisopeningupnewdimensionsintheperformanceofdynamicsealingsystems.

Manufacturing process for the diamond coating

Forthelarge-area,uniformcoatingofsealfaces,anoptimizedHF-CVD(HotFilamentChemicalVapourDeposition)processisusedinordertomeettheserequirements.Thesurfacesarecoatedinavacuumchamber.Whilethisishappening,thetopographyofthesurfaceandtheorientationofthediamondcrystalscanbeadjustedbyselectivelyvaryingtheprocessparameters.Adepositionprocesstakesplaceduringaperiodofapproximately�4–36hoursinareactor,duringwhichdiamondcrystalsareformedfromagasmixtureofhydrogenandmethane.ThesediamondcrystalsaredepositedontoaSiCsurface(sealface)atatemperatureof800°C.Thediamondcrystalscreatedinthiswaygrowtogethertoformaclosedlayer.Thedepositionprocessisinitiatedwithtungstenfilamentswhichare

stretchedhorizontallyacrossthereactorandheatedtoaround�000°C.

Thearrangementofthetungstenfilamentsisoneofthekeyfactorsforensuringthatthecoatedsealfacesareperfectlyflat.Onlythehorizontalfilamentarrangementmakesitpossibletoprovidethemechanicalsealswithauniformblanketcoating.

Manufacturing technology

Hydrogen99%

Methane1%

Gasatmosphereinvacuum

Activationbytungstenfilaments

Depositionofdiamondcrystals(0.�-1.0µm/h)

T≈�000°

Pressure, energy, gas fl ow and gas phase

Process diagram (source: EagleBurgmann)

Source: Fraunhofer IST, seal face layout in the EagleBurgmann process with horizontal fi lament arrangement


13

However,EagleBurgmannalsosuppliesalargenumberofservice-provenrangesofsealsforpumpsandagitatorswhichhavedesign-dependentloose-fittedsealfacesandseatsandarethereforeidealforDiamondFaces®.Thereisalsotheoptionofrelativelysimpledesignadaptationforawholeseriesofseals.

For which types of seal is DiamondFaces® suitable?n Forallsealswithhard/hardpairings

madeofsiliconcarbiden Singleandmultiplemechanicalsealsn Generallyallsealswithloose-fitted

sealfacesandseats,suchasM7,H7,Cartex®andMG1

n Forrangeswheredesignadaptationisrelativelysimple,e.g.BurgmannHRorSHorSeccoMix®

The right seal for each application

BecausesiliconcarbidepackingringscoatedwithDiamondFaces®haveanextremelyhardsurface,furthermachiningisalmostimpossible.Inotherwords,thecoatingprocesshastobethelaststepinthemanufacturingprocessbeforeassemblingtheseal.Theso-calledshrink-fittingofsealfacesintometalcarriersisnolongerappropriatesincethisimpairstheplanarityofthesurfaceandre-polishingtheslidingfacesisoutofthequestion.


14

Byoptimizingcrystallinediamondcoatings,itispossibletoincreasetheefficiencyofmechanicalsealsystemsconsiderablywhenthereisinsufficientlubrication,duringdry-runningorevenwhensealingagainstabrasivemedia.

1.Significantincreaseintheservicelifeoftheentiresystem

�.Returnoninvestmentwithinaveryshorttime

3.ExtensionoftheMTBFandMTBRvalues

4.Wideningoftherangeofapplications

1. Significant increase in the service life of the entire system

Thereducedsliding-facefrictionreducestheheatproducedbyfrictionandthereforeincreasesdry-runningreliability.Theminimizedfrictionalsoreducestheamountofheatproducedinthesealandthereforeprotectsthesecondarysealingelements(O-rings).

Sincethereisvirtuallynowearinthediamondcoating,evenwhenslidingfacescoatedwithDiamondFaces®arerunningagainsteachother,anextremelylongservicelifeisachievedevenduringpartialdry-running.Thediamondcoatingalsomakesforoutstandingwearprotection,evenagainstmediawithhighsolidscontent.

2. Return on investment within a very short time

Theinnovativecoatingtechnologymakesitpossibletoincreaserunningtimeandoperatingreliabilityconsiderablyandthereforedecreasetheoverallcostsoverthelifecycleofamechanicalseal.AnalyseshaveshownthattheROI(returnoninvestment)canbeobtainedafteronlyaveryshorttimeasresultofthesignificantlyincreasedservicelifeachievedbyadiamond-coatedmechanicalseal.

ThemaincostblockswhichcanbesignificantlyinfluencedwithDiamondFaces®are:- Serviceandmaintenancecostsofthe

machine- Serviceandmaintenancecostsofthe

seal- Costsduetodowntimeandloss-of-

productionorprecautioncosts(suchasredundantpumps)

Customer benefits

Return on Investment

Years 1 2 3 4 5 6 7

Life

Cyc

le C

osts

– Single seal with DiamondFaces– Single seal, API Plan 2 – Dual Seal, API Plan 53

Detailed ROI calculation using the FSA/ESA software “Life-Cycle Cost Estimator”


15

4. Widening of the range of applications

TheDiamondFaces®innovationcomesintoitsownwhenitisthereliabilityofpumpsandmixersthatmatters.DiamondFaces®isidealforapplicationsintheoilandgasindustries,chemicalandpharmaceuticalindustries,refineries,buildingservicesandslurryapplications.

3. Extension of the MTBF and MTBR values

Theaverageincreaseinservicelifecanbeexploitedtocombinemaintenanceactivitieswiththoseofotherengineeringorplantcomponentssuchasbearingsorcouplings.

Accordingtothisanalysisoftheaveragecomponentservicelife,pumprepairsandtheassociateddowntimesandproductionstopscanbeavoidedbysuccessfullyincreasingtheservicelifeofthemechanicalseals.

Duringnormaloperation,theamountoffrictionalheatproducedisalsoreducedbythereducedslidingfriction.Thelowerfrictionoutputoftheslidingsurfacespermitsreducedcoolingwithdoublesealsystemsandhighertemperaturelimitswithlow-boiling-pointmedia.Theuniversalchemicalresistancedemonstratedbytheproductanditsinsensitivitytomediawithhighsolidscontenthasmeantthatitcanbeusedinthechemicalandpharmaceuticalindustriesasstandard.Carbongraphitematerials,whichcanleadtoinadmissibleproductcontaminationunderabrasion,caninmanycasesbereplaced.

Example showing where the service life is increased from 1.5 years to 3 years

Without DiamondFaces® With DiamondFaces®

Mechanical seal1.5years

Bearing3years

Coupling4.5years

Shaft15years

0 3 6 9 1� 15Serviceintervalinyears

Shaft

Coupling

Bearing

Mechanicalseal


16

Total Deer Creek/ Bornemann, Canada

The challengeThenewSteamAssistedGravityDrainageprocessisusedtoexploitlargeoil-sandfieldsinCanada.Withthisprocess,oilcomponentsaredissolvedbyexposuretosteamandtransportedusingamultiphasepumpfromBornemann.Becauseoftheextremeabrasivepropertiesofthedeliverymediumandthedry-runningcondition,theaverageservicelifeofamechanicalsealis�weeks.

Operating conditionsn Substrate:Buka��nMedium(product):Hotwater,oil,gas

andsandn Productpressurep:1.0bar(abs)n Producttemperaturet:100°Cn Rotationalspeed:1300min-1

n Slidingvelocity:6m/s

The solutionTheservicelifewasincreasedmorethantenfoldbyusingtheinnovativeDiamondFaces®coatingincombinationwiththeBurgmannHJ4S1/80-G179.1mechanicalseal.Thenewcoatinginnovationistheoptimumsealingtechnologyforallmultiphaseapplications.

References


17

Refrigeration technology, screw compressor

The challengeTheoperationallyinducedevaporationofdissolvedcoolantinthesealinggapoftherefrigerationplantisunavoidable.Thescrewcompressoristhereforeforcedtorundry,whichinturnfrequentlyleadstoleaksatthemechanicalseal.Thisrequiredacost-effectivesolutionwithimproveddry-runningcapabilityforthemechanicalseal.

Operating conditionsn Substrate:Buka��nMedium(product):Oilwith1�%

R404A(dissolved)n Productpressurep:17.5bar(abs)n Producttemperaturet:45°Cn Rotationalspeed:3000min-1


The solutionTheleakageratewasreducedbyafactorof4to5byusingaBurgmannH75/N/85-00withDiamondFaces®.

Dry-running tests

The ChallengePerformanceofdry-runningtestsindifferent(high-temperature)applicationsinthelaboratoryofBT-BurgmanninbenchmarkwithQ6Q6withoutcoating.

Operating conditionsnMedium(product):Airn Productpressurep:1.0bar(abs)n Producttemperaturet:�5°Cn Rotationalspeed:3000min-1

n Slidingvelocity:�.3-3.3m/s

Results-Q6Q6withoutcoating,failureaftera

fewminutes.-DiamondFaces®,ingoodcondition

after60minutes.


18

Lapping and washing at EagleBurgmann, Atec Automatisierungstechnik

The challengeIncreasetheservicelifeofmechanicalsealsduringlappingandwashingofSiCsealfaces.Theproducthandledisanabrasivemedium,withthebarrierpressurebeingappliedintermittently.

Operating conditionsnMedium(product):Diamondand

SiCwatersuspensionsn Productpressurep:1.8bar(abs)n Producttemperaturet:�5°Cn Barriermedium:Watern Barrierpressurep:4-6bar(abs)n Rotationalspeed:300min-1

n Slidingvelocity:0.9m/s

The solutionTheBurgmanndoublesealCartex/40andM7N/40withDiamondFaces®onBuka�7wassuccessfullyusedandtheservicelifeextendedbyafactorof6.

Pump start-up without media

The challengePreventsealfailureduringdry-runningandinsufficientlubricationwhencommissioningapumpwithouttheproductmedium.

Operating conditionsn Substrate:Buka��nMedium(product):Water/airn Productpressurep:�.0bar(abs)n Producttemperaturet:�0°Cn Rotationalspeed:3000min-1


The solutionBurgmannMG/1�5withDiamondFaces®.Testsshowedsignificantimprovementduringdry-runningandwhentherewasinsufficientlubrication.

Without coating:Damage to sliding faces after 1500-2000 h, very high leakage

DiamondFaces®: Sliding faces in good condition after 11500 h, no leakage


19

Water pumps in swimming pools

The challengePreventsealfailuresduringdry-runningandwhenthereisinsufficientlubricationwhenrestartingaswimming-poolpumpwhichhas,forinstance,beenshutdownfortheseason.

Operating conditionsnMedium(product):Airn Productpressurep:�.4bar(abs)n Producttemperaturet:�4°Cn Rotationalspeed:1450min-1

n Slidingvelocity:�.5m/s

The solutionBurgmannMG/�8withBuka��DiamondFaces®madefor:improveddry-runningcapabilityunderconditionsinvolvinginsufficientlubricationandpermanentsealfailure.

Normal operation with occasional insufficient lubrication

Dry-running

Uncoated

after1�0min

DiamondFaces®

after1�0min

Normaloperation

Time/min

Tem

pera

ture

/°C

–––– SiC(uncoated)–––– DiamondFaces®

Insufficientlubrication

Tem

pera

ture

/°C

Time/min

–––– SiC(uncoated)–––– DiamondFaces®

Uncoated

after1min

DiamondFaces®

after15min


EagleBurgmann in your vicinity

All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications means, however, that they can serve only as guide values. We must be notified of the exact conditions of application before we can provide any guarantee for a specific case. Subject to change. 62

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Burgmann IndustriesGmbH & Co. KGÄußere Sauerlacher Str. 6–10D-82515 WolfratshausenPhone +49(0)8171 / 23-0Telefax +49(0)8171 / 23-1214www.eagleburgmann.com

ArgentinaChilicote S.A.Avda. Julio A. Roca 546C1067 ABN Buenos Aires, ArgentinaPhone +54 / 11 / 43 43 84 69Telefax +54 / 11 / 43 31 42 78

AustraliaEagleBurgmann Australia Pty. Ltd.16 Stennet t Road, Ingleburn, NSW 2565Phone +61/ 2 / 96 05 64 44Telefax +61/ 2 / 98 29 69 58

AustriaEagleBurgmann Austr ia GmbHVogelweiderstraße 44 aA-5020 SalzburgPhone +43 / 662 / 82 57 01Telefax +43 / 662 / 82 57 03

BelarusMetalkaUl. Obojnaja, dom 4, korpus 1 kv. 125220004 MinskPhone +375 17 211 0785Telefax +375 17 211 0785

BelgiumEagleBurgmann Belgium B.V.B.A.Zagerijstraat 11B-2960 Sint-Job-in't-GoorPhone +32 / 3 / 6 33 99 44Telefax +32 / 3 / 6 33 99 49

BulgariaKonstantin & SonsYantra Str. 13a, BG-SofiaPhone +359 / 2 / 9 43 41 90Telefax +359 / 2 / 9 43 41 99

BrazilEagleBurgmann do BrasilVedaçoes Industr iais Ltda.Av. Sta. Izabel, 1721CEP - 13084-643 Barao GeraldoCaixa Postal 65 60Campinas - Sao PauloPhone +55 /19 / 37 49 97 40Telefax +55 /19 / 37 49 97 42

CanadaNova Magnetics-Burgmann Ltd. One Research DriveDar tmouth, Nova ScotiaCanada B2Y 4M9 Phone +1/ 902 / 465 66 25Telefax +1 / 902 / 465 66 29

TG-Burgmann Ltd.3225 Mainway DriveBurlington, OntarioCanada L7M1A6Phone +1/ 905 / 3 35 14 40 Telefax +1/ 905 / 3 35 40 33

ChileSelloTecno Ltda.Luis Thayer Ojeda No. 0130OF 806 Providencia SantiagoChilePhone +56 / 2 / 333 33 03Telefax +56 / 2 / 333 25 19

ChinaBurgmann Shanghai Ltd.No. 127-8 Wenjing RoadMinhang, ShanghaiPeople's Republic of ChinaPhone +86 / 21/ 64 62 05 50Telefax +86 / 21/ 64 30 02 19

Burgmann Dalian Ltd.No. 86 Liaohe East Road, DD Por t116620 DalianPeople's Republic of ChinaPhone +86 / 411 8758 1000Telefax +86 / 411 8758 1418

EBI (Shanghai) Investment Management Co. Ltd.Room 205 B Cimic TowerNo. 1090 Century Ave. Pudong201120 ShanghaiPeople's Republic of ChinaPhone +86 21 58 36 15 99Telefax +86 21 58 35 48 38

ColombiaWilliam Tobon & Cia.Cr. 7 - 64 - 50 - Ex t . 301 Santafé de BogotaPhone +57 / 1 / 211 76 75Telefax +57 / 1 / 211 76 75

Cyprus & LebanonTRCI Ltd.122, Limassol Ave. PO Box 243711703 Nicosia, CyprusPhone+357 22 42 79 80Telefax +357 22 42 30 21

Czech RepublicEagleBurgmann Czech s.r.o.Na Drahach 1364CZ-15600 Praha 5 ZbraslavPhone +420 / 2 / 57 92 05 05Telefax +420 / 2 / 57 92 05 08

KE-Burgmann Czech s.r.o.V Láznich 395CZ-254 01 Jilove u PrahyPhone +420 / 2 / 41 02 18 11Telefax +420 / 2 / 41 02 18 30

DenmarkKE-Burgmann A/SExpansion Joints DivisionPark Allé 34, DK-6600 VejenPhone +45 / 75 36 18 11Telefax +45 / 75 36 15 32

KE-Burgmann A/SSeals DivisionIndustr isvinget 1, DK-6600 VejenPhone +45 / 75 36 49 88Telefax +45 / 75 36 39 88

KE-Burgmann Bredan A/SOdinsvej 1, Box 129DK-6950 RingkobingPhone +45 / 96 74 28 00Telefax +45 / 97 32 36 31

EcuadorPetroconsultant S.A.Fco. de Goya 262Urb. Los Cipresses IIEl CondadoP.O. Box 17-17-1254, QuitoPhone +593 / 2 / 49 17 52Telefax +593 / 2 / 49 35 09

EgyptAlimex Alexandria Impor t Expor t258 Abdel Salam Aref Str.Louran - El SarayAlexandria POB 313Phone +20 / 3 / 5 81 00 60Telefax+20 / 3 / 5 81 00 65

Estonia & LatviaFilter ASLäike tee 9, Peetri küla, Rae vald,EE-75312 HarjumaaPhone +00372 606 6606Telefax +00372 606 6650

FinlandKE-Burgmann Finland OyExpansion JointsP.O. Box 139, Ensimmäinen SavuSF-01510 VantaaPhone +358 / 9 / 82 55 01Telefax +358 / 9 / 82 55 02 00

Tiiv istetekniikka OyMäkituvantie 5, SF-01510 VantaaPhone +358 / 207 65 171Telefax +359 / 207 65 20 07

FranceEagleBurgmann France SASZone d’Activité les Perr iers106/108 Route de CormeillesBP 96, F-78505 Sar trouvillePhone +33 / 1/ 30 86 50 20Telefax +33 /1/ 39 15 16 07

GermanyKundenbetreuungs-Center Frankenthal Carl-Benz-Straße 15D-67227 Frankenthal

Service Center Rhein-MainPhone +49 / 62 33 / 770 89-120Telefax +49 / 62 33 / 770 89-131Werksbüro FrankenthalPhone +49 / 62 33 / 770 89-0Telefax +49 / 62 33 / 770 89-130Euroseals Customer ServicePhone +49 / 62 33 / 770 89-0Telefax +49 / 62 33 / 770 89-190

Kundenbetreuungs-Center Köln Gewerbegebiet RheinbogenVorgebirgsstr. 27D-50389 Wesseling

Service Center KölnPhone +49 / 2236 / 38 33 50Telefax +49 / 2236 / 38 33 70Werksbüro KölnPhone +49 / 2236 / 38 33 0Telefax +49 / 2236 / 38 33 20

Kundenbetreuungs-Center Nord Postweg 190 D-21218 Seevetal / Beckedor f

Service Center NordPhone +49 / 4105 / 6750-0Telefax +49 / 4105 / 6750-191Werksbüro BremenPhone +49 / 4105 / 6750-0Telefax +49 / 4105 / 6750-193Werksbüro Hamburg Phone +49 / 4105 / 6750-0Telefax +49 / 4105 / 6750-193Euroseals Customer ServicePhone +49 / 4105 / 6750-0Telefax +49 / 4105 / 6750-190Werksbüro OldenburgAugust-Wilhelm-Kühnholz-Str. 45D-26135 OldenburgPhone +49 / 4 41 / 5 46 39Telefax +49 / 4 41 / 5 54 28

Kundenbetreuungs-Center Ost Airpark MerseburgHans-Grade-Straße 4D-06217 Merseburg

Werksbüro CottbusPhone +49 / 3461 / 84 29 17Telefax +49 / 3461 / 84 29 30

Werksbüro LeipzigPhone +49 / 3461 /84 29 10Telefax +49 / 3461 / 84 29 30Service Center OstPhone +49 / 3461 / 84 29 20Telefax +49 / 3461 / 84 29 30

Kundenbetreuungs-Center Ruhr Am Piekenbrocksbach 8D-46238 Bottrop

Service Center RuhrPhone +49 / 2041 /1 88 51-50Telefax +49 / 2041 /1 88 51-70Werksbüro RuhrPhone +49 / 2041 /1 88 51-14Telefax +49 / 2041 /1 88 51-20

Kundenbetreuungs-Center Südwest Karlstraße 82D-72138 Kirchentellinsfurt

Werksbüro FreiburgPhone +49 / 7121 / 67 84 93Telefax +49 / 7121 / 96 30 44Werksbüro StuttgartPhone +49 / 7121 / 96 30 43Telefax +49 / 7121 / 96 30 44

Service Center BayernBurgmannstr. 1D-82547 EurasburgPhone +49 / 8171 / 23 17 37Telefax +49 / 8171 / 23 16 63

Service Center MarlGeb. 1192, PB 14Paul-Baumann-Str. 1D-45764 MarlPhone +49 / 2365 / 4 98 61 64Telefax +49 / 2365 / 4 98 61 60

Werksbüro FrankfurtDiezer Straße 108D-65549 Limburg/LahnPhone +49 / 6431 / 9 22 99Telefax +49 / 6431 / 9 22 98

Werksbüro MünchenPostfach 1240D-82502 WolfratshausenPhone +49 / 8171 / 23 12 71Telefax +49 / 8171 / 23 10 49

Werksbüro NürnbergRiedäckerweg 2D-90765 Fürth-StadelnPhone +49 / 911 / 7 67 00 87Telefax +49 / 911 / 76 76 23

Werksbüro RegensburgAussiger Str. 9 eD-93073 NeutraublingPhone +49 / 9401 / 52 22 77Telefax +49 / 9401 / 52 23 73

Espey Burgmann GmbHThomas-Edison-Str. 19D-47445 MoersPhone +49 / 2841 / 99827-0Telefax +49 / 2841 / 99827-55

Burgmann Automotive GmbHBurgmannstraße 1D-82547 EurasburgPhone +49 / 8171 / 23 15 10Telefax +49 / 8171 / 23 15 30

Great BritainEagleBurgmann Industr ies UK LP12, Welton RoadWedgnock Industr ial EstateGB-Warwick CV 34 5PZPhone +44 /1926 / 41 76 00Telefax +44 /1926 / 41 76 17

KE-Burgmann U.K .Eaton Bank, CongletonGB-Cheshire SW12 1NZPhone + 44 / 1260 / 29 12 89Telefax + 44 / 1260 / 29 13 03

GreeceA.G. Stambolidis & Co.Mitrodorou 22GR-10441 AthenPhone +30 /21/ 05 15 06 65Telefax +30 /21/ 05 15 08 10

HungaryEagleBurgmann Hungaria Kf t .Lejtö utca 6H-1124 BudapestPhone +36 /1/ 3 19 81 31Telefax +36 /1/ 3 19 81 25

IndiaBurgmann India PVT. LTD.A.K . Industr ial EstateMadina Manzil CompoundS.V. Road, Goregaon (West)Bombay 400 062Phone +91/ 22 / 28 74 15 34 Telefax +91/ 22 / 28 74 88 10

KE-Burgmann Flexibles India Pv t . Ltd. Survey No. 1426Nagappa Industr ial Estate,194 G.N.T. Road, PuzhalChennai 600 066 , IndiaPhone +91 / 44 / 6 59 06 32Telefax +91 / 44 / 6 59 09 17

IndonesiaPT EagleBurgmann IndonesiaJl. Jababeka Blok J6-EKawasan Industr i CikarangBekasi 17550 - Jawa BaratPhone +62 / 21/ 8 93 53 13 Telefax +62 / 21/ 8 93 53 15

IrakWTEUkba Sq., Mahala 929Zuhak 2, House No. 5P.O. Box No. 2421Al Jadria, BaghdadPhone +964 171 99033Telefax +964 171 93034

IranBurgmann Pars Sealing Systems Co.No. 1, Kokab Alley, Pasdaran Ave.TeheranPhone +98 / 21/ 2 86 28 19Telefax +98 / 21/ 2 85 44 81

IsraelETA Engineering Ltd.P.O. Box 890Ramat-Gan 5210818 Tushia St .Phone +972 / 3 / 6 24 19 45Telefax +972 / 3 / 5 62 84 75

ItalyEagleBurgmann Italia s.r.l .Viale Martiri della Liberazione, 12I-23875 Osnago (LC)Phone +39 / 039 / 95 22 501Telefax +39 / 039 / 928 94 83

BT-Burgmann S.P.A.Via Meucci, 58I-36057 Arcugnano (Vi)Phone +39 / 0444 / 28 89 77Telefax +39 / 0444 / 28 86 93

JapanEagle Industr y Co., Ltd.General Industry Overseas Sales Dept.Marketing & Sales Division1-12-15, Shiba-Daimon, Minato-kuTokyo, 105-8587Phone +81/ 3 / 3432-4771 Telefax +81/ 3 / 3438-2370

JordanEman Essa Trading Est .P.O. Box 840067Amman 11180 Phone +96 / 279 / 5 57 66 92Telefax +96 / 265 / 66 55 96

KazachstanGlobe InterstarFurmanova Street 240, Office 18050059 AlmatyPhone +7 / 327 / 264 34 86Telefax +7 / 327 / 264 33 82

KoreaEagleBurgmann Korea Co. Ltd.541, Suwolam-Ri, Seotan-MyonPyongtaek-Si, Kyongki-Do, -451-850-,Pyongtaek Yosu Busan Daegu Phone +82 / 31/ 664-40 95Telefax +82 / 31/ 664-40 94Branch Offices: Ulsan

KuwaitDan Trading & Contracting Co. W.L.L.P.O. Box 509213051 Safat , KuwaitPhone +965 / 2 43 25 53Telefax +965 / 2 43 78 33

LibyaUnited Technical & Engineering Miseran St.P.O. Box 81276 Tripoli G.S.P.L.A.J.Phone +218 21 4442 641 Telefax +218 21 4776 152

LithuaniaDmitr i MelnikowBalandziu 5 - 2LT-91188 KlaipedaPhone / Fax +370 46 31 29 49Mobile +370 69 82 14 27

MalaysiaEagleBurgmann (Malaysia) Sdn. Bhd.No. 7, Lorong SS13, 6 BOf f Jalan SS13/6Subang Jaya Industr ial Estate47500 Petaling JayaPhone +60 / 3 / 56 34 86 24Telefax +60 / 3 / 56 34 97 42

MexicoEagleBurgmann Mexico S.A. de C.V.Calzada de GuadalupeNum. 350-6, Col. El Cerr itoC.P. 54720, Cuautit lán Izcalli ,Estado de México, Mexico Cit yPhone +52 / 55 / 58 72 53 93Telefax +52 / 55 / 58 72 64 93

MoroccoPetro-MatAngle Rue Michel de l'Hôpitalet Rue Jules CesarCasablanca 05Phone +212 / 240 / 87 99 Telefax +212 / 240 /19 39

NetherlandsEagleBurgmann Netherlands B.V.Kruisboog 21bNL-3905 TE VeenendaalPhone +31/ 318 / 54 20 00Telefax +31/ 318 / 54 15 35

New ZealandEagleBurgmann New Zealand Ltd.P.O. Box 34285, Birkenhead, 3 Parity Place, Glenfield, AucklandPhone +64 / 9 / 4 43 57 72Telefax +64 / 9 / 4 41 27 66

NigeriaSealing Engineering Services Ltd.82 St. Finbarr's College RoadAkoka / Yaba, LagosPhone +234 /1/ 82 59 09Telefax +234 /1/ 82 59 09

NorwayEagleBurgmann Norway ASP.O. Box 143 Industriveien 25 DN-2021 SkedsmokorsetPhone +47 / 64 / 83 75 50Telefax +47 / 64 / 83 75 75

OmanOverseas PetroleumEquipment Co. L.L.C.P.O. Box 261, HamriyaPostal Code 131, Sultanate of OmanPhone +968 / 60 21 82Telefax +968 / 60 20 84

PakistanAzif Asim AssociatesSuit #02, 1st Floor, Sameer plaza Civic Center, 3-C1Faisal Town54660 Lahore, PakistanPhone +92 / 42 / 111 585Telefax +92 / 42 / 516 83 44

PeruCorporación Gamma S.A.C.Av. La Marina 1321, San MiguelLima - PeruPhone +51/12 / 63 76 70Telefax +51/12 / 63 02 86

PhilippinesBurgmann (Philippines) Inc.No. 9769 National Road, MaduyaCarmona, Cavite Phone +63 / 49 / 8 39 06 55Telefax +63 / 49 / 8 39 06 54

PolandKE-Burgmann Polska Spólka z.o.o.Ul. Technikow 40PL-02-468 WarsawaPhone +48 22 863 12 45Telefax +48 22 863 12 50

PortugalEagleBurgmann Ibérica S.A.Avda. de Quitapesares, 40E-28670 Villaviciosa de Odón, MadridPhone +34-91-616 66 01Telefax +34-91-616 66 81

QatarJaidah Motors and Trading Co.P.O.Box 150Doha / Qatar / Arabian GulfPhone +974 / 68 21 82Telefax +974 / 41 41 00

RomaniaVisand Impex S.R.L.Str. Apusului nr. 78, sector 6RO-776231 BucurestiPhone/Fax +40 / 21/ 4 34 46 46

RussiaEagleBurgmann OOO ul. Zheleznodorozhnaya, 1 , str. 45 606524 Zavolzhye Gorodetsky district, Nizhny Novgorod region Phone +7 / 831 / 6 93 05 58Telefax +7 / 831 / 6 93 05 59

Moscow Representation Ul. Novotcheremuschkinskaja 61RF-117418 MoskauPhone +7 / 095 / 7 97 20 14 Telefax +7 / 095 / 7 97 20 78

Saudi ArabiaBurgmann Saudi Arabia LimitedPO box No. 3422, Dammam Por t RoadDammam, Saudi ArabiaPhone +96 / 63 / 8 59 91 19Telefax +96 / 63 / 8 59 92 29

Gas Arabian Services EstP.O.Box 3422Dammam 31471, King Saud StreetKingdom of Saudi ArabiaPhone +96 / 63 / 8 35 15 00Telefax +96 / 63 / 8 32 28 22

SingaporeEagleBurgmann Singapore Pte. Ltd.52 Serangoon North Avenue 4, #03-02 Ever Tech Building555853 Singapore Phone +65 / 64 81 34 39Telefax +65 / 64 81 39 34

EBI Asia Pacif ic Pte. Ltd.29 International Business Park, Acer Blg, Tower B, #03-03609923 SingaporePhone+65 / 65 65 66 23 Telefax +65 / 65 65 96 63

KE-Burgmann Singapore Pte. Ltd.Expansion JointsBlk 7 Pioneer Road Nor thNo. 01-51, Singapore 628459Phone +65 / 62 61 85 81 Telefax +65 / 62 61 85 89

Slovenia (CRO, BIH, MAC, YU)Branch Of f ice SloveniaMalci Beliceve 37SLO-1000 LjubljanaPhone +386 / 1/ 4 23 15 57Telefax +386 / 1 / 2 57 40 57Mobile +386 / 41 / 66 13 15

Slowakian RepublicEagleBurgmann Czech s.r.o.Na Drahach 1364CZ-15600 Praha 5 ZbraslavPhone +420 / 2 / 57 92 05 05Telefax +420 / 2 / 57 92 05 08

Technosam s.r.o.Galvaniho 2/ASK-82104 BratislavaPhone +421 / 2 / 43 41 35 85Telefax +421 / 2 / 43 41 36 03

South AfricaEagleBurgmann SealsSouth Afr ica (PTY.) LTD.1 Brunton CircleFounders View South, Modder fonteinJohannesburg 2065, Gauteng, R.S.A.Phone +27 /11/ 4 57 90 00Telefax +27 /11/ 6 09 16 06Postal adress: P.O. Box 1210, Edenvale 1610, R.S.A.Also responsible for: Namibia, Botswana, Swaziland, Zambia, Zimbabwe, Mozambique, Mau-r it ius, Congo, Ethiopia, Uganda, Tanzania

SpainEagleBurgmann Ibérica S.A.Avda. de Quitapesares, 40E-28670 Villaviciosa de Odón, MadridPhone +34-91-616 66 01Telefax +34-91-616 66 81

SwedenEagleBurgmann Sweden AB Svärmaregatan 3 S-60361 NorrköpingPhone +46 /11 / 14 00 05Telefax +46 /11 / 14 00 15

Göteborg Of f iceExpor tgatan 73S-40123 GöteborgPhone +46 / 31 / 58 68 50Telefax +46 / 31 / 58 14 66

SwitzerlandEagleBurgmann (Switzerland) AGHofstrasse 21, CH-8181 HöriPhone +41 / 44 / 8 60 88 00Telefax +41/ 44 / 8 61 01 35

TaiwanEagleBurgmann Taiwan Co. Ltd.1F No. 7, Lane 144 Chi Lin Rd.TaipeiTaiwan, R.O.C.Phone +886 -2- 2581 0040Telefax +886 -2- 2523 2793

ThailandEagleBurgmann (Thailand) Co. Ltd.Banga Tower C, Floor 18th40/14 Moo 12 Banga-Trad Rd.Km. 6.5 Bangkaew, BangpleeSamutprakarn 10540 Phone +66 / 2 / 7 51 96 21Telefax +66 / 2 / 7 51 96 28

TrinidadEswil Equipment & Supply(W.I.) Ltd10 - 16 Lady Hailes AvenueSan Fernando, Tr inidad, W. I.P.O. Box 3585, La RomaineTrinidad, W. I.Phone +1/ 868 / 6 57 88 38Telefax +1/ 868 / 6 52 90 02

TunisiaIndus Serv S.A.R.L69 Rue Houcine BouzaieneApt. N°4, 2 éme Etage1001 Tunis Phone +216 / 71 / 337 215Telefax +216 / 71 / 337 214

Turkey

TurkmenistanGlobe InterstarAndaliba Street 8274011 AshgabatPhone +993 / 12 / 47 73 24Telefax +993 / 12 / 47 73 25

UkraineIRT-TechnogermUl. Komsomolskaja, 13040009 SumyPhone +380 542 610 324Telefax +380 542 610 326

United Arab EmiratesEagleBurgmann Middle East FZEP.O. Box 61310Jebel Ali Free ZoneDubaiPhone +971/ 4 / 8 83 88 41Telefax +971/ 4 / 8 83 88 43

UruguayBilpa S.A.Casilla Correo 889Código Postal 11800Santa Fé, 1.131 - Montevidéo- UYPhone +598 / 2 / 29 33 43Telefax +598 / 2 / 29 06 87

USAEagleBurgmann Industr ies LP10035 Brookriver Dr. Houston, Texas 77040Phone +1/ 713 / 9 39 95 15Telefax +1/ 713 / 9 39 90 91

KE-Burgmann USA Inc. 2100 Conner RoadHebron, Kentucky 41018Phone +1 / 859 / 746 0091Telefax +1 / 859 / 746 0094

UzbekistanGlobe InterstarNukus Str. 13 / 2100015 TashkentPhone +998 / 71 / 133 39 58Telefax +998 / 71 / 133 49 74

VenezuelaBurgmann de Venezuela C. A.Calle 6 contra Calle 9Edif icio Fant, Piso 2, La UrbinaCaracas, Dt to. Sucre, 1073Edo. Miranda, VenezuelaPhone +58 / 212 / 2 42 15 48Telefax +58 / 212 / 2 42 45 44

VietnamBavico Ltd. 97A Ly Tu Trong Street , Distr ict 1Ho Chi Minh Cit y, VietnamPhone +84 / 8 / 8 24 30 46Telefax +84 / 8 / 8 22 35 82

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The new dimension in mechanical seal technology - Etusivu 62 e.pdf · 6 The pairing of sliding...

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