620 Rod Seal

The Hallite 620 is a twin lip rod seal designed with precision trimmed sealing lips to provide a dry sealing solution in light and medium-duty application. The seal is manufactured in a polyurethane shell energized by a high quality O-ring. The sealing lips are trimmed at an angle to give optimal rod sealing performance.

Like the Hallite 621 rod seal, the Hallite 620 is designed to have an interference in the seal housing groove and a secondary lip. The secondary sealing lip located behind the primary sealing lip improves stability of the seal in the gland. At zero or low pressure, the O-ring helps to increase the sealing force preventing any bypass. Under most conditions as the pressure rises, the sealing force increases and the O-ring ensures complete lip actuation. Together these features result in improved life and sealing.

In rod applications, the Hallite 620 provides a twin lip alternative to Hallite’s 511, 512, and particularly the 513 rod/piston seals.

The Hallite 620’s seal shell is molded in Hythane® 181, Hallite’s high-performance polyurethane, for easy installation and excellent low temperature performance. The Hallite 620 is also offered in other high quality Hythane® materials to match the needs of the application.

  • Unit of measurement:
Unit of measurement:

Max pressure

400 Bar

Temp range


Max speed

  • Recomended
  • Possible
  • Not Suitable

* For fluid types marked as possible, please call our team of experts on +1 248-668-5200 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) Recommended Recommended
HFC (water glycol) Possible Possible
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