Characteristics and performance
The Hallite 730 double-acting piston seal in a four part assembly is designed for use in heavy-duty applications where position holding ability is important, such as longwall mining roof support applications using water-based fluids and large diameter crane cylinders using standard hydraulic oils.
Comprised of a tough, wear resistant thermoplastic polyester elastomer (TPE) face seal pre-loaded by a profiled nitrile rubber energiser, the Hallite 730 design also contains a pair of rectangular polyacetal anti-extrusion rings.
The standard TPE face material is suitable for both roller-burnished and honed tubing. While rarely used in alternate material, the face material can be provided in a number of material options including lubricated polyester and PTFE.
product details
For your reference, we have included an installation guide for the Hallite 730 double-acting piston seal which you can find after the part number range pages of this data sheet.
Ask an expertMax pressure *
Temp range
Max speed
* Max pressure stated is dependant on the material variant selected. Please consult the datasheet for further information.
- Recomended
- Possible
- Not suitable
* For fluid types marked as possible, please call our team of experts on +49 (0)40 73 47 48-0 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) | Recommended | Recommended |
HFB (60/40 invert emulsion) | Recommended | Recommended |
HFC (water glycol) | Not suitable | Not suitable |
Water | Possible | Possible |
Other fluid types | ||
Air/Nitrogen | Not suitable | Possible |
HFD (Phosphate ester ARYL Type) | Not suitable | Not suitable |
Synthetic esters (HEES, HFDU) | Recommended | Possible |