© 2006 Merkel Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
Rod S
eals
Pisto
n Sea
lsW
ipers
Guide
sRo
tary
Seals
Roto
r Sea
lsSy
mm
etric
Seals
Stat
ic Se
alsFit
ting T
ools
Merkel Wiper PU 7
Merkel Wiper PU 7
Product advantagesPUR wiper for axially accessible housings
secure seating in housing (interference fit)made of highly wear-resistant polyurethaneno open ring gap to the outside (dirt pocket) between rod and housingeasy to manufacture housingno corrosion between housing and wiper cage.
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Product descriptionSingle-acting dirt wiper made of polyurethane with integrated metal cage.
ApplicationEarth moving equipment, industrial trucks, presses, mining, injection moulding machines, support cylinders, agricultural machinery, cranes, loading platforms, telescopic cylinders.
Material
Material Designation Hardness
Polyurethane 95 AU V149 95 Shore A
Operating conditions
Material 95 AU V149
Temperature range in °C
Hydraulic oils HL, HLP –30 … +110
HFA fluids +5 … +50
HFB fluids +5 … +50
HFC fluids –30 … +40
HFD fluids –
Water +5 … +50
HETG (rapeseed oil) –30 … +60
HEES (synthetic esters) –30 … +80
HEPG (glycol) –30 … +50
Mineral greases –30 … +110
Sliding speed v in m/s 2
Surface quality
Surface roughness
Ra Rmax
Sliding surface * *
Groove base ≤1,6 mm ≤6,3 mm
Groove flanks ≤3 mm ≤15 mm
* The sliding surface must be matched to the sealing element being used
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Metal cage
Wiper lip
© 2006 Merkel Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
Rod S
eals
Pisto
n Sea
lsW
ipers
Guide
sRo
tary
Seals
Roto
r Sea
lsSy
mm
etric
Seals
Stat
ic Se
alsFit
ting T
ools
Merkel Wiper PU 7
Design notesPlease observe our general design notes in → Simrit Standard Catalogue, Merkel Hydraulics – Technical Principles.
Tolerance recommendation
Nominal Ø d D
10 … 150 H8
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.
Fitting & installationCareful fitting is a prerequisite for correct function of the wiper. The wiper can be easily pressed into an axially open housing. → Simrit Standard Catalogue, Merkel Hydraulics – Technical Principles.
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© 2006 Merkel Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
Rod S
eals
Pisto
n Sea
lsW
ipers
Guide
sRo
tary
Seals
Roto
r Sea
lsSy
mm
etric
Seals
Stat
ic Se
alsFit
ting T
ools
Merkel Wiper PU 7
L+0, 2
H
C
20°
R <= 0,51
D d∅ ∅
Rounded and free of burrs
d D Profile L H C Article No.
10 20 5,0 5,0 8 1,0 24245001
12 20 4,0 4,0 6 0,8 24234908
12 22 5,0 5,0 8 1,0 24245152
14 20 3,0 4,0 5 0,8 24245101
14 24 5,0 7,0 10 1,2 24245151
15 25 5,0 5,0 8 1,0 24245103
16 22 3,0 3,5 5 0,8 24245003
18 28 5,0 7,0 10 1,2 24245150
20 28 4,0 3,5 5 0,8 24245102
20 30 5,0 7,0 10 1,2 24245002
22 32 5,0 7,0 10 1,2 24244937
22 32 5,0 5,5 7 1,0 24244936
25 32 3,5 5,0 7 1,0 24237353
25 35 5,0 7,0 10 1,2 24182670
28 38 5,0 7,0 10 1,2 24182671
28 40 6,0 7,0 10 1,2 24187185
30 40 5,0 5,0 8 1,0 24244938
30 40 5,0 7,0 10 1,2 24182672
32 42 5,0 7,0 10 1,2 24244939
35 45 5,0 7,0 10 1,2 24182674
36 46 5,0 7,0 10 1,2 24182675
40 50 5,0 7,0 10 1,2 24182676
42 52 5,0 7,0 10 1,2 24182677
45 55 5,0 7,0 10 1,2 24182678
50 60 5,0 7,0 10 1,2 24182679
55 65 5,0 7,0 10 1,2 24182680
56 66 5,0 7,0 10 1,2 24182681
60 70 5,0 7,0 10 1,2 24182682
63 75 6,0 7,0 10 1,2 24182683
65 75 5,0 7,0 10 1,2 24182684
70 80 5,0 7,0 10 1,2 24182685
75 85 5,0 7,0 10 1,2 24182686
Article list
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© 2006 Merkel Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
Rod S
eals
Pisto
n Sea
lsW
ipers
Guide
sRo
tary
Seals
Roto
r Sea
lsSy
mm
etric
Seals
Stat
ic Se
alsFit
ting T
ools
Merkel Wiper PU 7
L+0, 2
H
C
20°
R <= 0,51
D d∅ ∅
Rounded and free of burrs
d D Profile L H C Article No.
80 90 5,0 7,0 10 1,2 24182687
85 95 5,0 7,0 10 1,2 24182688
90 100 5,0 7,0 10 1,2 24182689
95 105 5,0 7,0 10 1,2 24182690
100 110 5,0 7,0 10 1,2 24182691
105 115 5,0 7,0 10 1,2 24182692
110 120 5,0 7,0 10 1,2 24182693
115 125 5,0 7,0 10 1,2 24182694
120 130 5,0 7,0 10 1,2 24182695
125 140 7,5 9,0 12 1,5 24182696
140 155 7,5 9,0 12 1,5 24182697
145 160 7,5 9,0 12 1,5 24182698
150 165 7,5 9,0 12 1,5 24182699
Ordering example
Article No. Type d D H Material
24182699 PU 7 150 165 12 Polyurethane
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