U Seals
U-seals, or rod u-seals, are regarded as one of the most important seals on any type of fluid power equipment, as they work to prevent fluid from within the cylinder from seeping out. Rod u-seals are seen as critical components, as leakage through the rod u-seal can reduce equipment performance and, in some extreme situations, can result in environmental problems.
U-rings must provide an excellent resistance to friction, abrasion and wear. The use of a u-seal is recommended with the following:
- Lubrication oils
- Mineral oil-based hydraulic fluids
- Hydraulic oils
- HFA fluids
- HFB fluids