additional to the machined seals Stepseal®2K and rim seal for housings to ISO 7425/2 (rubber energised plastic seals) the u-Cup type ru6 has been developed as an injection molded seal of polyurethane material to fit in the same ISO housings.
The integrated nbr O-ring (only available for series ru62 - ru64) improves the performance at low pressure and low
temperature applications. Polyurethane (Zurcon®Z20) is a proven material for u-cups due to their good mechanical
The u-Cup type ru6 can be installed as a single seal for low to medium duty applications; for sealing systems, the u-Cup ru6 shall be installed mainly as a secondary seal together with the Turcon®Stepseal®2K as primary seals.
METHOD OF OPERATION:
The sealing effect of the u-Cup ru6 comes from the intrusive preload of the seal body and from the compression of the seal lip and the O-ring during installation. in operation conditions, the radial contact forces are superimposed by the system pressure.
Due to the special design and the integrated O-ring the ru6 u-Cups have an excellent sealing behavior with and without pressure activation. The short sealing lip gives better friction values compared to common u-Cups.
Pressure: Max. 25 MPa (as single element)
Speed: up to 0.5 m/s Temperature: use in mineral oils: -35 °C to +110 °C
Media: Mineral oil-based hydraulic fluids.