Merkel Double Wiper PU 11
Merkel Double Wiper PU 11
Merkel Double Wiper PU 11
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Rod Seals<strong>Merkel</strong> <strong>Double</strong> <strong>Wiper</strong> <strong>PU</strong> <strong>11</strong><strong>Merkel</strong> <strong>Double</strong> <strong>Wiper</strong> <strong>PU</strong> <strong>11</strong>Piston SealsProduct descriptionU-ring with wiper lip(double-lip wiper);sealing edge of wiper liplightly rounded.Product advantages<strong>Double</strong> wiper for improvementof total tightness; dimensionsalso for standardised housingsaccording to ISO 6195 type CApplicationIndustrial vehicles, injectionmoulding machines, standardcylinders.Guides<strong>Wiper</strong>sSealing lips<strong>Wiper</strong> lip■■■sealing lips pointing inwardsfulfil the function of a U-ringwiper lip with lightly roundedsealing edge reliably wipesaway dirt and leaves aresidual oil film on theretracting rodtightness, service life andfriction behaviour of theentire system are improvedRotary Seals<strong>PU</strong> <strong>11</strong> is preferably fitted incombination with our rod sealsOMS-MR. The double-lipwiper can take pressures up to1,6 MPa. If higher pressurescan build up we recommend apressure relieving bore betweenseal and wiper.MaterialMaterial Designation HardnessRotor SealsPolyurethane 95 AU V142 95 Shore AOperating conditionsSurface qualityMaterialTemperature range in °C95 AU V142SurfaceroughnessR aR maxSymmetric SealsHydraulic oils HL, HLP –30 … +<strong>11</strong>0HFA fluids +5 … +50HFB fluids +5 … +50HFC fluids –30 … +40HFD fluids –Sliding surface * *Groove base ≤1,6 mm ≤6,3 mmGroove flanks ≤3 mm ≤15 mm* The sliding surface must be matched to the sealing element being usedWater +5 … +50HETG (rapeseed oil) –30 … +60Static SealsHEES (synthetic esters) –30 … +80HEPG (glycol) –30 … +50Mineral greases –30 … +<strong>11</strong>0Sliding speed v in m/s 1Fitting Tools1© 2006 <strong>Merkel</strong> Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
<strong>Merkel</strong> <strong>Double</strong> <strong>Wiper</strong> <strong>PU</strong> <strong>11</strong>Rod SealsDesign notesPlease observe our general design notes in → Simrit Standard Catalogue, <strong>Merkel</strong> Hydraulics –Technical Principles.Tolerance recommendationPiston SealsNominal Ø d D D <strong>11</strong>2 … 200 H<strong>11</strong> H<strong>11</strong>The tolerance for the Ø d is defined by the buffer seal.Lead-in chamfersLength and angle are to be designed to suit the rod seal used.<strong>Wiper</strong>sFitting & installationCareful fitting is a prerequisite for the correct function of the wiper. Generally, wipers can be quicklyand easily fitted by deforming into a kidney-shape. → Simrit Standard Catalogue, <strong>Merkel</strong> Hydraulics –Technical Principles.Static SealsGuidesSymmetric SealsRotor SealsRotary Seals© 2006 <strong>Merkel</strong> Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG2Fitting Tools
Rod Seals<strong>Merkel</strong> <strong>Double</strong> <strong>Wiper</strong> <strong>PU</strong> <strong>11</strong>Article listPiston SealsHL 1L +0, 2R 2 0,5R 1 0,5<strong>Wiper</strong>sD D 1 d∅ ∅ ∅Rounded and free of burrsGuidesd D D1 Profile H L L1 min. Article No.12 18 14,5 3,0 6,0 4,0 6,0 2434868314 20 16,5 3,0 6,0 4,0 6,0 2434868416 22 18,5 3,0 6,0 4,0 6,0 2433868218 24 20,5 3,0 6,0 4,0 6,0 2433868322 28 24,5 3,0 6,0 4,0 6,0 24314567Rotary Seals25 31 27,5 3,0 6,0 4,0 6,0 4900302728 36 31,0 4,0 7,5 5,0 7,0 2429443236 44 39,0 4,0 7,5 5,0 7,0 243<strong>11</strong>42245 53 48,0 4,0 7,5 5,0 7,0 2433868450 58 53,0 4,0 7,5 5,0 7,0 4900302955 65 58,0 5,0 8,5 6,0 8,0 4900080356 66 59,0 5,0 8,5 6,0 8,0 24314566Rotor Seals60 70 63,0 5,0 8,5 6,0 8,0 4900303065 75 68,0 5,0 8,5 6,0 8,0 4900080470 80 73,0 5,0 8,5 6,0 8,0 2433868575 85 78,0 5,0 8,5 6,0 8,0 4900080690 100 93,0 5,0 8,5 6,0 8,0 24338686<strong>11</strong>0 125 <strong>11</strong>4,0 7,5 12,0 8,5 10,5 24338687Symmetric Seals140 155 144,0 7,5 12,0 8,5 10,5 24348685150 165 154,0 7,5 12,0 8,5 10,5 529428153 168 157,0 7,5 12,0 8,5 10,5 49018327170 185 174,0 7,5 12,0 8,5 10,5 24349427Ordering exampleArticle No. Type d D H MaterialStatic Seals24349427 <strong>PU</strong> <strong>11</strong> 170 185 12,0 PolyurethaneFitting Tools3© 2006 <strong>Merkel</strong> Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
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