Characteristics and performance

The Hallite 764 double-acting piston seal is a compact, low friction seal for light to medium duty applications. The advanced face geometry gives the Hallite 764 single-acting capabilities making it an excellent choice for double-acting applications where minimal dynamic leakage is required.

Comprised of a tough, wear resistance-thermoplastic polyurethane face seal which is pre-loaded by a NBR O-ring, the housing width allows a narrow width piston to be used.

Product details

We recommend that an adequate bearing, such as the Hallite 506 or 87 bearing strip, is mounted on one or both sides of the seal. For further details of bearing grooves, please refer to the appropriate product data sheet.

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Max pressure

250 Bar

Temp range

-30°C
110°C

Max speed

1m/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  
AnyRecommendedRecommended
Waterbased fluids  
HFA (5/95)Not suitableNot suitable
HFB (60/40 invert emulsion)Not suitableNot suitable
HFC (water glycol)Not suitableNot suitable
WaterNot suitableNot suitable
Other fluid types  
Air/NitrogenPossiblePossible
HFD (Phosphate ester ARYL Type)Not suitableNot suitable
Synthetic esters (HEES, HFDU)RecommendedRecommended