755

The Hallite 755 double-acting piston seal is a compact, low friction seal for light to medium duty applications designed originally to fit North American NFPA groove standards.

The Hallite 755 is comprised of a tough, wear-resistant thermoplastic elastomer face seal which is pre-loaded by a square cross-section NBR expander. The face material comes in a number of material options to extend operating conditions. The housing width allows a narrow width piston to be used.

We recommend that an adequate bearing, such as the Hallite 506 or 87 bearing strip or the Hallite 533 molded bearing, is mounted on one or both sides of the seal. For further details of bearing grooves, please refer to the appropriate product data sheet.

  • Unit of measurement:
Unit of measurement:

Max pressure

350 Bar

Temp range

-40°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 (02) 9620 7300 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 Recommended
HFB (60/40 invert emulsion) Possible Recommended
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 Recommended