Characteristics and performance

The design of the Hallite 844  double-lipped, snap-in rod wiper minimises the oil transfer out of the ram on the cylinder rod by collecting traces of fluid passing the rod seal.

The Umbrella Wiper Technology™, a unique feature, is a protective debris guard flap on the wiping lip that entirely covers the gland housing and prevents the water/slurry trap that is common with conventional wipers. This feature offers added protection to the integrity of the hydraulic system by reducing corrosion and preventing the ingress of contamination into the wiper housing groove and hydraulic cylinder gland which will result in increased system life.

The standard Hallite 844 is moulded in Hythane® 361, Hallite’s high-performance polyurethane, for excellent durability in service. Some sizes of the Hallite 844 are offered in a Hythane® 181 polyurethane with a textured wiping lip to provide improved dry rod performance, particularly for long stroking cylinder applications.

Product details

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Temp range

-45°C
110°C

Max speed

4m/sec
Key:
  • Recomended
  • Possible
  • Not suitable

* For fluid types marked as possible, please call our team of experts on +91 80 2372 6000 to talk through your requirements and determine if this seal is the most suitable for your needs.

 Dynamic applicationStatic application
Fluids based on mineral oil  
AnyRecommendedPossible
Waterbased fluids  
HFA (5/95)PossiblePossible
HFB (60/40 invert emulsion)PossiblePossible
HFC (water glycol)Not suitableNot suitable
WaterPossiblePossible
Other fluid types  
Air/NitrogenPossiblePossible
HFD (Phosphate ester ARYL Type)Not suitableNot suitable
Synthetic esters (HEES, HFDU)RecommendedPossible