Characteristics and performance

The Hallite 657 overcomes high pressure and shocking loading which commonly cause pumping problems when using O-rings in flange sealing applications preventing reliable sealing. It is moulded in Hythane® 181, Hallite’s high-performance polyurethane, for easy installation and excellent low temperature performance.

Product details

The Hallite 657 is also offered in an industrial standard grade of polyurethane. Also listed are two non-SAE seal sizes for metric flanges.

 

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Max pressure

600 Bar

Temp range

-45°C
110°C
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  
AnyNot suitableRecommended
Waterbased fluids  
HFA (5/95)Not suitablePossible
HFB (60/40 invert emulsion)Not suitablePossible
HFC (water glycol)Not suitablePossible
WaterNot suitablePossible
Other fluid types  
Air/NitrogenNot suitablePossible
HFD (Phosphate ester ARYL Type)Not suitableNot suitable
Synthetic esters (HEES, HFDU)Not suitableRecommended