Characteristics and performance
The Hallite 714 double-acting piston seal is a compact seal for medium to heavy-duty applications.
In double-acting telescopic cylinders or phasing cylinders, the seal’s reinforced, heat-stabilized, thermoplastic sealing face with step-cut joint is an ideal choice because it allows the seal to pass over ports without damage. The rugged, extrusion resistant design also performs extremely well in high-pressure off-highway and earth-moving applications where the seal face can tolerate the large extrusion gaps which are required to prevent piston-to-bore contact.
The abrasion resistant glass-filled nylon (GFN) face seal material allows the seal to work well on super smooth inside diameter (SSID) as drawn tube. The precision moulded face has chamfers which coupled with a profiled NBR expander allows for easier cylinder assembly.
The expander material comes in a number of material options to extend operating conditions. Contact your local Hallite technical team to decide which is best for your application.Ask an expert
Max pressure *
* Max pressure stated is dependant on the material variant selected. Please consult the datasheet for further information.
- Not suitable
* For fluid types marked as possible, please call our team of experts on +86 (0)21 3351 7272 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|
|HFA (5/95)||Not suitable||Not suitable|
|HFB (60/40 invert emulsion)||Not suitable||Not suitable|
|HFC (water glycol)||Not suitable||Not suitable|
|Water||Not suitable||Not suitable|
|Other fluid types|
|Air/Nitrogen||Not suitable||Not suitable|
|HFD (Phosphate ester ARYL Type)||Not suitable||Not suitable|
|Synthetic esters (HEES, HFDU)||Recommended||Not suitable|