The Hallite 673 is an asymmetric, single lip U-ring rod seal designed to provide a dry sealing solution in light and medium-duty applications. The seal can be considered for use in heavy-duty applications when used with a suitable full depth back-up ring. The seal profile has been developed to minimise friction and improve back pumping capability when used with a double-lipped wiper such as Hallite 839N, 844, and 864.

The standard material for the the Hallite 673 is Hythane® 591 which we recommend for heavier duty and earth-moving applications. As alternative, the seal is available in Hythane® 181 for easy installation and excellent low temperature performance.

The seal is ideal for applications that require a double-lipped wiper, such as the Hallite 839, Hallite 844, or Hallite 864.

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Unit of measurement:

Temp range


Max speed

  • Recomended
  • Possible
  • Not Suitable

* For fluid types marked as possible, please call our team of experts on +39 (0)58 642 8287 to talk through your requirements and determine if this seal is the most suitable for your needs.

  Dynamic application Static application
Fluids based on mineral oil    
Any Recommended Recommended
Waterbased fluids    
HFA (5/95) Possible Possible
HFB (60/40 invert emulsion) Possible Possible
HFC (water glycol) Not suitable Not suitable
Water Possible Possible
Other fluid types    
Air/Nitrogen Possible Possible
HFD (Phosphate ester ARYL Type) Not suitable Not suitable
Synthetic esters (HEES, HFDU) Recommended Possible