Claron Polyseal Single Acting Rod Wiper Seal EW

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Designed to preclude the ingress of contaminents into the system as well as assist in sealing the Rod. Produced in Polyurethane, the wiper is designed to fit into closed housings with pre-loading of the static face providing stability and sealing. The wiper is profiled such that the lip facing the media collects fluid passing the rod seal. The use of Polyurethane with it’s excellent properties combined with the proportioned design of the wiper will extend the service life of the rod seal.Claron Wiper Seals Style PWD should not be utilised in combination with double-acting Rod seals unless the housing design allows for pressure relief between the wiper and the seal.

Operating Conditions:

Optimum service conditions are affected by temperature, speed and surface finish.

Refer to Appendix 1 for further information.

AU Polyurethane
DIN Hydraulic Fluid Description °C
H Mineral oil without additives 100
H-L Mineral Fluid with anti corrosion and anti ageing additives 100
H-LP Mineral oil as HL plus additives reducing wear, raising load 100
H-LPD Mineral oil as H-LP but with detergents and dispersants 100
H-V Mineral oil as H-LP plus improved viscosity temp. 100
HFA E Emulsions of mineral oil in water. Water content 80-95% 40
HFA S Synthetic oil in water. Water content 80-95% 40
HFB Emulsions of water in mineral oil. Water content 40% 40
HFC Aqueous polymer solutions. Water content 35% ns
HFD R Phosphoric acid ester based ns
HFD S Chlorinated hydrocarbon based ns
HFD T Mixtures of HFD R and HFD S ns
HEPG Polyglycol based ns
HETG Vegetable Oil based 60
HEES Fully synthetic ester based 60


For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining

tolerances refer to the catalogue page of selected seal. Refer to Aappendix 4 for value of tolerance symbols.

Style PWD may be deformed and fitted into a closed groove.


For the wiper to function correctly, it is important that care be taken in fitting the wiper within its housing.

For a detailed checklist, refer to Appendix 3.

Part Number Refer Seal
Ød1 ØD1 ØD2 L1 L2
EW 275 2,750 3,187 2,980 0,187 0,437
EW 300 3,000 3,500 3,278 0,187 0,500
EW 350 3,500 4,062 3,850 0,187 0,582
EW 362 3,625 4,187 3,950 0,187 0,562
EW 437 4,375 4,908 4,697 0,187 0,533
EW 525 5,250 5,844 5,602 0,187 0,594
EW 631 6,312 6,906 6,665 0,187 0,594
EW 731 7,312 7,906 7,665 0,187 0,594
EW 837 8,375 8,969 8,665 0,187 0,594


Claron Polyseals


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