The Hallite 839 wiper is precision moulded in Hallite’s high performance polyurethane – Hythane® 181 for maximum wear resistance, and is designed to exclude dirt and moisture from entering the cylinder and to collect traces of fluid passing the rod seal.
Opposite the wiper lip are two sealing lips accurately produced and proportioned to collect fluid passing the rod seal. To obtain stability and improve the seal the outside diameter is in interference with the housing.
The Hallite 839N wiper is designed to suit popular Asian housing and has a textured wiping lip for improved performance. A vent between the seal and the wiper is recommended to avoid a presure trap.
- 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|
|HFB (60/40 invert emulsion)||Possible||Possible|
|HFC (water glycol)||Possible||Possible|
|Other fluid types|
|HFD (Phosphate ester ARYL Type)||Not suitable||Not suitable|
|Synthetic esters (HEES, HFDU)||Recommended||Possible|