Table Of Contents - Clark Seals
Table of ContentsIntroduction.1Catalog Guidelines.2Shaft Seal Features. 3Seal Numbering System. 4Seal Selection Process.5-14Seal Types. 5-9Operating Limits. 10Lip Material Selection. 11Properties of Basic Lip Materials. 11Fluid/Elastomer Compatibility.12Based Upon Shaft Speed. 13Metal Case and Garter Spring Selection. 14Standard Seal Width and Minimum Radial Cross Section. 14Shaft Recommendations.15-16Shaft Hardness.15Shaft Surface Finish.15Shaft Tolerance. 15Shaft Chamfer.15Shaft Eccentricity.16Housing Recommendations. 17-18Housing.17Housing Bore Chamfer. 17Housing Bore Finish. 17Housing Bore and Seal O.D. Tolerance. 18Installation Procedures.19Clark Seal Numbers.20-43Inch. 20-40Metric. 41-43Interchange Tables. 44-61Chicago Rawhide.44-50National.51-57NOK. 58-61Conversion Tables. 62-64Shaft Seal Selection Considerations.inside back covercustomerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240
IntroductionClark Seals , since 1956, has designed, manufactured and supplied oil and grease seals to protect all types of equip-ment. Clark Seals developed the original Sheave and Excluder Seals and was one of the pioneers in the development ofvacuum molding technology to reduce premature seal failure. Clark Seals continues to search for the latest innovative designtechnology to develop the highest quality seals for less. Clark holds patents on a variety of seal designs, including the Full–FaceCO and CN for ball and roller bearings, the CSL washing machine seals and the latest CSL PREMIUM that provides maximumprotection in harsh operating environments for bearings.Clark Seals is customer focused.Each customer is assigned an Account Manager, who coordinates allthe activities from design through delivery. Clark maintains a 90–day inventory for next day delivery on all blanket orderaccounts. Inventory control through company intranet guarantees up to date and reliable information to help meet customersneeds.Clark Seals is design (technology) oriented.Clark designs shaft seals to SAE, RMA, ISO and DIN3670 standards. AutoCAD design drawings and specifications are produced from application information supplied by thecustomer. Molds are produced with CNC/CAD controlled manufacturing to produce the most complicated seal design andassure precision to the smallest details. All critical seal dimensions are specific to the type of elastomer required. The latestSAE Optimum seal design standard is our most common design. The drawing and specification are supplied to our customersfor review before production. They can be electronically transmitted to the customer for their purchasing, inspection andengineering requirements.Clark Seals is ISO 9001 certified.Clark’s control and oversight of critical design, purchasing and manufacturing processes insure quality and repeatability. Our Tulsa manufacturing plant utilizes the latest inspection equipment toverify the seals are produced to the design specifications. A 20X optical comparator is used for precise measurement of the critical seal geometry. A radial lip force gauge is used to determine the seals ability to function properly over time. Rubber analyzing equipment confirms the important tensile strength and durometer requirements. Inspection equipment also identifies themetal case and spring materials. Electronic and digital measuring equipment accurately measures all the critical seal dimensions. An inspection report can be furnished with each shipment at the customer’s request.Our on–going objective is to grow our company by providing: Highquality seals using the latest engineering and manufacturing technologyprices Next day delivery CompetitiveAt Clark Seals we take pride in our ability to meet the design challenges presented by our customers. Weare an established company whose primary purpose has been to reduce the cost of quality for our customers. At Clark Seals better quality costs less!1customerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240
Catalog GuidelinesThe purpose of this catalog is to provide the user with a guideline for the selection of a standard seal in a general application.Many sealing requirements, however, require a seal to function beyond the design limits of a standard seal. This catalogidentifies factors to consider in selecting standard shaft seals and their design limits.Some Limits include:Shaft speedCavity pressureSealing lip temperaturesEccentricityOperating environmentFluid/Elastomer compatibilityTorque requirementsSpring back minimumsSeal size restrictionsLubrication restrictionsInstallation restrictionsBore and shaft configurationSeal lifeBi–directional rotationSealing surfaceThe “Shaft Seal Selection Considerations” page in the back of this catalog is used in the seal selection process. For assistance,contact Clark Seals, Ltd. r DesignonoitcSeleSENIELPL64-005870 (918) 6421-15657(800)) 664-1146FAX: (918mog.kseals.cthis catalowww.clarls listed in x pe r i e nce , andaesethet limited todesigneal.t line is no f pr od uct i o n & t y p e o f s h a f t scudroprkoladCsnreaTh4 5 y e a ally a n y s i zeirtumore thanWe have provide you with vnacewHcustomerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-112402
Shaft Seal FeaturesAIR SIDEFLUID SIDESeal WidthOuter Metal CaseHousing BoreSeal O.D.Metal CasethicknessInner MetalCaseSpring position(R Value)GarterSpringHead HeightFlex ngleShaftDiameterExcluder LipI.D.Primary sprungSealing lip I.D.3Beam Lengthcustomerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240
Seal Numbering SystemClark’s seal part numbers are created with letters designating the lip and case design followed by the shaft diameter,housing bore and the seal width in inches or metric. Example: a seal designated by rterSpringTB21.7502.500.312SSSLipSealMaterial CoatingVLTB2 designates a double lip, spring loaded, metal O.D., single case seal that seals against a 1.750” diameter shaft. It press fitsinto a 2.500” housing bore. The seal is .312” wide. The garter spring and metal case are stainless steel. The lip material isViton. The O.D. is covered with Latex.If the letter “U” is in front of the lip design letter designation, it identifies a unitized seal. The letter “T” and/or “P” following thecase designation letter indicates a Teflon ring molded to the sealing lip or a seal designed for pressure. The letter “L, R or W”following the case designation letter indicates a hydrodynamic sealing lip.Lip DesignsD – Two spring loaded lipsE – High dynamic eccentricity lipF – Felt lipK – Double lip, non–spring loadedL – Counter–clockwise rotation helixM – Mud excluder lipsP – Spring loaded pressure lipR – Clockwise rotation helixS – Single lip, spring loadedT – Double lip, spring loadedV – Single lip, non–spring loadedW – Bi–directional rotation helixWP – Wiper lipY – Single lip, non–spring loaded, flushing featureZ – Side lip sealing against a vertical surfaceLip MaterialsBlank – NitrileV – Viton (Fluoroelastomer)P – PolyacrylateT – TFE (Teflon)EP – Ethylene PropyleneE – NeopreneSi – SiliconeCase DesignsA – Additional metal caseA2 – Metal with inner metal caseB2 – Metal O.D.B – Metal O. D. rubberized inner caseBR – Metal O.D. rubberized inner case with nose gasketC – Rubber covered O.D.F – Completely rubber coveredG – Corrugated rubber O.D.H – Rubber covered O.D. and rubber covered exterior metal caseJ – Flanged metal case for positioningJ1 – Reinforced flanged metal caseHC – Metal O.D. install from either directionN – Partial rubber and partial metal case O.D.Case MaterialBlank – Carbon steelS – Stainless steelB – BrassMetal Case O.D. MaterialsBlank – No Latex coatingL – Latex coated O.D.Teflon is a registered trademark of Dupont.Garter Spring MaterialsBlank – Carbon steelSS – Stainless steelcustomerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-112404
Seal TypesGenerally, seals with spring–loaded lips are used for retaining oil lubricants and non–loaded lips are used for low–speed greaseretention. Metal O.D. seals are more suited for steel and cast iron housings. A press fit metal O.D. seal has greater holdingstrength and better alignment. As a general rule, the shaft surface speed of the “V” and “K” type seal should be less than 10M/s (33 feet/sec.)LipDesignSTVKWPCase DesignA2B2BBRCApplicationandDescriptionMetal O.D. designwith an inner casefor greaterstructural rigidity.Most common andeconomical metalO.D. design.Metal O.D. designwith fluid siderubber covered.Metal O.D. designwith a nose gasketfor face sealingand the fluid side isrubber covered.Rubber coveredO.D. design VA2VB2VBVBRVCKA2KB2KBKBRKCSingle lip springloaded. Lowpressure–fluidsealingapplications andsevere greasesealingconditions.Double lip springloaded. Lowpressure–fluidsealing andsevere greasesealingconditions withlight dustexclusions.Economicaldesign, singlelip for greaseretention orsealingviscous fluids.Double lipeconomicaldesign, greaseretention orsealing viscousfluids. Light dustexclusions.Dust wiper orscraper forhydraulic e@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240WPC
Seal TypesRubber O.D. seals are preferred for soft alloy or plastic housings and is the best choice for rough bore finishes above 100u inch(2.54µ M,) or for applications where the housing is subject to large thermal expansion.FGHB2JB2J1B2HCCompletely rubbercovered formaximumcorrosionprotection.Corrugated rubberO.D. for excellentO.D. sealing.Reducesspringback andinstallation force.Rubber coveredO.D. with exteriorrubber covering.Excellent O.D.sealing andcorrosionprotection.Metal O.D. designwith flange foreasy installation.Metal O.D. designwith a reinforcedlocating flange.Metal O.D.design.Installation fromeither rvice@clarkseals.com / www.clarkseals.com / 1-8800-5565-112406
Seal TypesThe “D” seal designs utilize two spring loaded lips to separatetwo fluids. Seals are generally wider to accommodate the twoworking lips. The bore depth will generally increase.DHDFDB2THPSCP1SCPTB2PTBP1TCP1The “P” and “P1” seal designs have spring–loaded lips and ashort beam length for medium pressure sealing. For applications up to 50 psi (3.5 kg/cm2) and shaft diameters under 2.5”.Maximum pressure depends upon shaft speed and total eccentricity. Stiffness ratio varies with shaft speed and cavity pressure. It is recommended to use a higher durometer rubber inpressure applications.The “HP” seal designs have backup rings of Teflon or steel.They have a greater reaction to shaft eccentricities and alonger beam length. Designed for higher pressures up to 150psi (10.6 kg/cm2). Maximum pressure depends upon shaftspeed and total eccentricity.VBRTHPTGLTB2HPSHRTCHPTA2WThe Hydrodynamic seal designs have molded rib projections on the airside of the primary sealing lip. They help pump oil back under the sealinglip toward the bearing cavity. A lower lip force allows for slightly highershaft speeds (greater than 32 m/sec.) The “L” type seals are used oncounterclockwise rotating shafts. The “R” type seals on clockwise rotatingshafts. The “W” type seals on bi–directional rotating shafts. The disadvantages are they help push contaminants toward the seal / shaft contact area.The “M” seal designs are for mud sealing. Extremely dirtyapplications at low rpm. Designed for irrigation and agriculturalequipment. When the seals are installed, the lips interfere withthe shaft and point away from the bearing cavity.MA2MB2KB2The “O” seal designs are like the standard designs except withan external lip. They are designed for sealing against a rotatinghousing such as a front wheel hub.SFO7TFOVFOcustomerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240
Seal TypesThe number “4” seal designs are for severe reciprocatingshaft applications where oil or oil–water fluid retention isdesired. Pressures up to 100 psi (7kg/cm2) can be sealed.Applications include shock absorbers.TC4TB24TB2J4The “Z” seal designs incorporate a side sealing lip to contact a vertical sealing surface. The excluder lip pointsaway from the bearing cavity and helps prevent dust fromentering.THZTH1ZTH3ZThe “WV” seal designs have a dust wiper or scraper lip toclean reciprocating shafts. It is used in hydraulic orpneumatic cylinder applications and is not recommendedfor pressures above 5 psi.WVB2WVC1WVBThe “Y” and “HC” seal designs are for light–duty dustexclusion and they allow spent grease to be flushed out ofthe bearing JUTB2HUT3HVUTB3HCVThe “U” unitized oil seal designs incorporate a sleeve.They are more expensive and are generally used in mudor very dirty applications. They are frequently used on ashaft made of soft material. If more than three lips of anunitized seal have standard interference with a sealingsurface the shaft speed should not exceed 10 ft/sec(3m/sec.) Unitized seals can be designed to accommodatea small amount of shaft end play. Because of confinement,the heat at the sealing surface and lip interference mustbe dissipated by the fluid. Sometimes referred to as an oilbath seal. Installation tools are required to position thetwo components properly.customerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-112408
Seal Types9A PTFE (Teflon ) wafer is bonded to rubber and the rubberis bonded to the metal case. PTFE lip seals are for sealingaggressive media and sealing areas under high thermalstress. PTFE is bonded to the flexible rubber lip face. Theyare used in high speed and high temperature applicationswhere there is sparse lubrication. In small water pump applications, a properly designed seal using a machined Tefloninsert can resist up to 15 psi and not sacrifice the normalstiffness ratio between the flex thickness and beam HPTA2FATA3DB2H1PTB2VJUWUSAUVUTB2AJ1DHJAUTCATeflon is a registered trademark of Dupont.TB2JLcustomerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240
Operating LimitsOperating limits for spring–loaded lip seals such as the S, T and D designsShaftDiameterNitrile lip maximumMaximum continuousContinuous shaft speedpressure3500 rpm7000 rpm6000 rpm4000 rpm3500 rpm2600 rpmGeneral0.500” (13 mm)1.500” (38 mm)2.500” (64 mm)3.500” (89 mm)4.500” (114 mm)Maximum .013”0.017”5 psi5 psi5 psi5 psi5 psi5 psiNote: Higher speeds are possible using high temperature elastomers. Higher eccentricity with slower speeds.Operating limits for non–sprung lip seals such as the V and K designsShaftDiameterNitrile lip maximumMaximum continuousContinuous shaft speedpressureGeneral0.500” (13 mm)1.500” (38 mm)2.500” (64 mm)3.500” (89 mm)4.500” (114 mm)2000 rpm3500 rpm2500 rpm2100 rpm1500 rpm1200 rpmMaximum totaleccentricity4 psi4 psi4 psi4 psi4 psi4 �Note: Higher eccentricity with slower speeds.Operating limits for wiper lip seals such as the WP designMaximumlinear velocityMaximum pressureMaximum strokelengthMaximum shaft tobore misalignment200 ft/min.(1 m/sec.)4 psi(0.28 kg/cm2)78”(2.0 m)0.004”(0.1 m)S type lipT type lipD type lipV type lipK type lipWP type lipThese limits are based on the assumption that the heat is being conducted away from the lip through the lubricating fluid andshaft. A delicate balance must be achieved in an optimum seal design between the lip force and the energy dissipation. Therate of energy dissipation at the sealing lip is the limiting factor between success and failure of all lip seal designs.customerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-1124010
Lip Material SelectionThe lip selection is generally based upon the operating temperature of the sealing lip, fluid compatibility, pressure in thecavity, shaft speed, cost, operating environment and seal life requirement.Properties of Basic Lip MaterialsNitrileBasic PolymersSump OilTemperature -40 F to 230 F-40 C to 110 CRangeOil ResistanceAcid ResistanceAlkali ResistanceHeat ResistanceCold ResistanceWater ResistanceSunlight ResistanceOxidation ResistanceWear ResistanceOzone ResistanceVery goodGoodGoodGoodGoodGoodGoodGoodVery thylene Acrylic-40 F to 275 F-40 C to 135 C-40 F to 302 F-40 C to 150 C-94 F to 302 F-70 C to 150 C-112 F to 392 F-80 C to 200 C-40 F to 302 F-40 C to 150 CVery goodFairPoorVery goodVery goodFairVery goodPoorVery goodVery goodVery goodFairFairVery goodFairGoodVery goodGoodVery goodVery goodFairFairPoorVery goodVery goodGoodVery goodVery goodGoodVery goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodVery goodFairVery goodFairGoodVery goodGoodGoodGoodFairVery goodFairVery goodNote: Water resistance includes steam. No elastomeric material is ideally compatible with water as it is a very poor lubricant.11Base PolymersAdvantagesDisadvantagesNitrileLow cost, low swell. Good wear and oilresistance at moderate temperaturesPoor resistance to EP additives. Poor high temperatureresistance.PolyacrylateGood oil resistance. Low swell. Generally resistant toEP additives.Fair wear properties. Poor dry running.Poor water resistance. May crack at low temperaturesFluoroelastomerExcellent oil and chemical resistance.Good wear properties. Low swell.Becomes stiff at low temperatures. Poor followability atlow temperatures.SiliconeVery wide temperature rangePoor dry running properties. Poor resistance to oxidizedoil and some EP additives.TeflonExcellent oil and chemical resistance.Excellent temperature range.Easily damaged. Becomes stiff at low temperatures.High cost. Poor followability at low temperatures.Ethylene AcrylicGood temperature range. Good moistureresistance. Fair abrasion resistance.Poor dry running characteristics. May have high swellin some fluids.Saturated Nitrile(HNBR)Good wear and oil resistance at elevated temperatures.Good low temperature properties.Higher cost than nitrile.customerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240
Lip Material SelectionFluid / Elastomer CompatibilityLip MaterialTypes of ine Oil SAE 30 Wt.Very goodVery goodVery goodVery goodEngine Oil SAE 10 Wt.Very goodVery goodGoodVery goodGear Oil Super GearVery goodVery goodFairVery goodGear Oil Hypoid GearGoodGoodPoorVery goodVery goodPoorGoodFairPoorGoodPoorVery goodVery goodVery goodFairVery goodFairPoorPoorVery goodAlcoholAmyl NaphthaleneAutomatic Transmission FluidCarbon TetrachlorideChrome Plating SolutionPoorPoorGoodVery goodCutting OilVery goodGoodFairVery goodDetergent SolutionsVery goodPoorVery goodVery goodDiesel OilVery goodVery goodPoorVery goodDry Cleaning FluidsFairPoorPoorVery goodE.P. LubricantsGoodVery goodPoorVery goodEthylene GlycolVery goodFairVery goodVery goodFuel OilVery goodGoodPoorGoodGasolineFairPoorPoorVery goodGreaseVery goodVery goodVery goodVery goodHydraulic OilVery goodVery goodFairVery goodHydrochloric Acid Solution 20%FairFairFairVery goodIsopropyl AlcoholGoodPoorVery goodVery goodLight Oil/KeroseneFairPoorPoorGoodVery goodVery goodVery goodVery goodGoodGoodFairVery goodMethaneVery goodVery goodPoorGoodMineral OilVery goodVery goodGoodVery goodNaphthaGoodGoodPoorVery goodPaint Thinner, DucoPoorPoorPoorGoodPetroleum Base Lubricating OilVery goodVery goodFairVery goodSAE–90 Wt. OilVery goodVery goodPoorVery goodSalt WaterVery goodGoodVery goodVery goodSoybean OilVery goodVery goodVery goodVery goodLinseed OilMachine Oil No. 2Sulfuric Acid Solution (30%)FairFairPoorVery goodTurbine Oil No. 2GoodGoodGoodVery goodTurpentineVery goodGoodPoorVery goodWaterVery goodPoorVery goodVery goodWater–GlycolVery goodPoorGoodFairPoorPoorPoorVery goodXylenecustomerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-1124012
Lip Material SelectionBased Upon Shaft SpeedThe following graph shows allowable shaft speeds relative to lip materials in non-pressure 07,00000RPMRPM008,010,9,000015,000RPMRPMM30,000 RP35RPMShaft - RPMm/s40(Multiply m/s by 3.281 to get ft / s)3032502,52002,0151,50101,000RPPM0RShaft - RPMSHAFT SURFACE SPEED m / sM0,00PM0RM0 RPRPMNITRILES500 RPM500102030405060708090100110120 130140150160 170180 190SHAFT DIAMETER in mm(Multiply mm by .03937 to get inches)Example: 100mm diameter shaft, turning at 1500 RPM would be in the nitrile area.DesignronoiSelectSENIELPL0587918) 664-0( 0421-17(800) 565) 664-1146FAX: (918mkseals.cocatalog.www.clarted in this r i e nce , andslilsaeseited to the.s i g n ex pe is not lim od uct i o n & d e e o f s h a f t s e a lnlitcudrropppyftrkoladsanThe C45 yearn y s i zemore than ou with virtually aevaheWvide ywe can proH13customerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240200
Metal Case and Garter Spring SelectionThe metal case and garter spring are important factors in the life of a seal. A carbon metal case is generally used in oil andgrease applications. In a corrosive environment, stainless steel is recommended. A rubber covered carbon steel metal case isan economical substitute for stainless steel.In a non–corrosive environment a carbon steel spring wire garter spring is generally used. Stainless steel is recommended incorrosive environments or where the temperature of the lubricating fluid exceeds 270 F. (Carbon steel spring wire can be stressrelieved to reduce the cost of a stainless steel spring, but the reduction is small compared to the benefits.)Metal CaseGarter SpringSAE StandardApplication1008 1010 Carbon Steel30302/30304 Stainless Steel1050 1095 Carbon Steel30302/30304 Stainless SteelGeneralCorrosive EnvironmentsGeneralCorrosive/High TemperatureStandard Seal Width and rStandardSeal WidthShaftDiameterUp to 1.2501.251 to 2.0002.001 to 3.0003.001 to 4.5004.501 to 6.0002.1253.1254.1255.7517.5000.3120.375 or 0.500*0.437 or 0.500*0.5000.562Up to 3031 to 6061 to 8081 to 130131 to 270Width tolerance on inch seals: E0.015”BoreDiameterStandardSeal Width527885110101601215270Width tolerance 11mm E0.30, 11mm E0.40*0.500” width is a seal design with a double metal caseStandard Seal Radial Cross SectionThe radial cross section is one–half of the difference between the shaft diameter and the bore RadialCross SectionShaftDiameterBoreDiameterRadialCross Section0.500 to 1.2501.251 to 2.1252.126 to 3.0003.001 to 3.7503.751 to 5.7505.751 to 6.0001.000 to 2.0002.001 to 3.1253.126 to 4.0004.001 to 5.0005.001 to 6.8756.876 to 7.5000.2500.3120.3750.4370.5000.5636 to 3031 to 5455 to 8081 to 100—110 to 24016 to 5253 to 7273 to 100101 to 125—140 to 270681012.5—15customerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-1124014
Shaft RecommendationsShaft and Seal Compatibility is dependent upon the shaft hardness, finish, tolerance and the lead–in chamfer.Shaft Hardness is important in preventing excessive wear and developing scratches or dings during handling. It allows foreasy machining of the required finish. Under normal conditions, the sealing lip contact surface should be a Rockwell C–30. Ifhandling damage is likely to occur, then additional hardening to Rockwell C–45 is recommended. Harder surfaces are moreliable to “grain boundary corrosion” and if this is a risk, then corrosion–resistant coatings or stainless steel shaft sleeves areused.Shaft Surface Finish influences the amount of lip wear. The recommended roughness for a rotating shaft is 10 to 20 µin.Ra (0.25 µm to 0.50 µm Ra) and for a reciprocating shaft, 5 to 10 µin. Ra (0.13 µm to 0.25 µm Ra). Ra is the roughnessaverage.Plunge Grinding is recommended for a rotating shaft and centerless grinding is acceptable for a reciprocating shaft. Therotating shaft finish must be free of machine leads as machine leads can pump fluid under the sealing lip. Hard chrome andnickel plating can provide a hard surface and also prevent corrosion in harsh environments.Shaft Tolerances are listed below. Shaft tolerances should be reduced for higher pressure and speed applications.Shaft Diameterin InchesTolerancesShaft Diameterin MillimetersTolerancesUp to 4.0004.001 to 6.0006.001 to 10.000E0.003E0.004E0.005Up to 100100.1 to 150.00150.1 to 250.00E0.08E0.10E0.13Shaft Chamfer free of burrs and sharp edges is required to prevent damage to the sealing lip or distortion resulting in adislodged garter spring.typicallyBurr–free15 25 rounded edgesShaft1D1S.D.Recommended Shaft ChamferInches15MillimetersShaft Diameter (S.D.)TolerancesD1Shaft Diameter (S.D.)TolerancesD1Up to 1.0001.001 to 2.0002.001 to 3.0003.001 to 4.0004.001 to 5.0005.001 to 6.0006.001 to 10.000S.D. –0.094S.D. –0.140S.D. –0.166S.D. –0.196S.D. –0.220S.D. –0.260S.D. –0.276Up to 2525.1 to 5050.1 to 7575.1 to 100100.1 to 125125.1 to 150150.1 to 250S.D. –2.4S.D. –3.6S.D. –4.2S.D. –5.0S.D. –5.6S.D. –6.6S.D. –7.0customerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240
Shaft RecommendationShaft Eccentricity:Measuring the shaft runout (TIR) and the shaft–to–bore misalignment determine eccentricity. Combine the two results for thetotal eccentricity. The lip must follow the sealing surface to function effectively. As eccentricity and/or shaft speed increases, itbecomes more difficult for the lip to follow the sealing surface.ShaftdeShaft centerlinerotation pathBore centerlineCenter of rotation2de TIRRunoutShaft offsetde dynamic eccentricityShaft to bore misalignmentShaft runoutHousingbore0.30SILICONE0.200.10NITRILES, VITON & POLYACRYLATE00100020003000400050006000 7000SHAFT REVOLUTION (RPM)SHAFT OFFSET (mm)0.40(Multiply mm by .03937 to get inches)SHAFT RUNOUT (mm)(Multiply mm by .03937 to get inches)Determine maximum total eccentricity by combining shaft runout (TIR) and shaft–to–bore misalignment (shaft offset) using themethod shown above.0.400.300.200.100020 406080 100 120 140 160 180 200 240SHAFT DIAMETER (mm)(Multiply mm by .03937 to get inches)Shaft runoutdynamic eccentricityShaft offsetstatic eccentricitycustomerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-1124016
Housing RecommendationsHousings made of cast iron and steel provide good surfaces for both rubber covered and metal O.D. seals. Metal O.D. sealsare more suited for steel and cast iron housings where corrosion is not a factor. A metal O.D. seal has greater holding strength,will not spring back after installation, and has better alignment and concentricity. Rubber O.D. seals are more suited for softalloy or plastic housings, for rough bore finishes above 100 µin. (2.
customerservice@clarkseals.com / www.clarkseals.com / 1-8800-5565-11240 1 Clark Seals ,since 1956, has designed, manufactured and supplied oil and grease seals to protect all types of equip- ment. Clark Seals developed the original Sheave and Exclude
experience in pump manufacturing to provide eco-friendly non-flushing seals, easy-maintenance cartridge seals, and a variety of other optimal mechanical seals for a diverse range of applications. Rubber bellows seals Rotating single-spring seals Rotating multi-spring seals Cartridge seals Split seals Stationary seals
The Journals of Lewis and Clark. By Meriwether Lewis and and William Clark, 1804-1806. Note: These Journals are from May 14, 1804, the day the expedition left the Mississippi River, to September 26, 1806, a day or two after they arrived back in St. Louis. It includes all possible Journal entries of Lewis and Clark. Most of the "courses andFile Size: 4MBPage Count: 1023Explore furtherJournal Entries from the Lewis and Clark Expeditionwww.lewisandclarkexhibit.orgThe Journals of Lewis and Clark, by Meriwether Lewis and .www.gutenberg.orgThe Journals of the Lewis & Clark Expedition Center for .www.unl.eduHome Journals of the Lewis and Clark Expeditionlewisandclarkjournals.unl.eduJournal Excerpts Discovering Lewis & Clarklewis-clark.orgRecommended to you b
seals, snap rings & rollers 329 bearing series bearing description page information seals, snap rings & rollers, general overview 330 p / n identification seals, snap rings & rollers 331 g metric single lip rubber seals 332 gr metric single lip rubber seals with steel od 332 sd metric double lip polyurethane seals 334 wr metric shaft retaining .
Chisholm, Paul & Michelle 72 Christie, Russell J. 114 Clanton, David 19 Clark, Eddie And Linda 19 Clark, Ernie 27 Clark, Fredrick 30 Clark, Geoffrey 29 Clark, Geoffrey 33 Clark, Jeff and Angie 15 Clark, Jonathan 76 Clark, Nick 16 Clay, Dixie H. 87 Clegg, Larry 61 Coghlan, Sr., F. H. 98 Coker, Randall 17 Cole, Bobby 106 Cole, Bobby 123 Cole .
al herrin advertising co. albers fred albers george. albert donald albertson george. aldrich dennis . clanton richard clanton wesley. clark anna clark frederick. clark charles clark cloes. clark joyce clark robert. . ford estate frieda ford susan. ford walter forsythe atwood. foster steven fowler james . fowler malcolm fox jason.
Fluid power seals — Hydraulic piston & rod seals, hydraulic scraper/wipers, hydraulic wear/guide rings Parker Chomerics — EMI shielding, conductive rubber, adhesives & sealants, shielding gaskets Rotary seals — Mechanical seals, seal repair, component & cartridge seals, polymer
The Garlock family of companies has developed countless products including gaskets and sheet material, metallic gaskets, resilient metal seals, KLOZURE oil seals, bearing isolators and mechanical seals, compression packing, expansion joints, elastomer seals, .
mathematics at an advanced level, including articulation to university degree study. The Unit will provide learners with opportunities to develop the knowledge, understanding and skills to apply a range of differential and integral calculus techniques to the solution of mathematical problems. Outcomes On successful completion of the Unit the learner will be able to: 1 Use differentiation .
