The Hallite 155 U-ring static seal designed to seal the joint between the gland and the cylinder bore. The Hallite 155 replaces the conventional O-ring and back-up ring combination.
Through its special design and polyester material compound, the seal will work with a maximum extrusion gap of 0.40 mm at 500 bar pressure.
Every nominal diameter of the Hallite 155 is suitable for a range of bore diameters, ØD₁. See part number range for details.
This seal was developed for water-based, HFA, applications, but can also be used with standard mineral oil fluids.
- Not Suitable
* For fluid types marked as possible, please call our team of experts on +44 208 941 2244 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||Recommended|
|HFB (60/40 invert emulsion)||Not suitable||Recommended|
|HFC (water glycol)||Not suitable||Not suitable|
|Other fluid types|
|HFD (Phosphate ester ARYL Type)||Not suitable||Not suitable|
|Synthetic esters (HEES, HFDU)||Not suitable||Possible|