Rod U-Ring R01

U-Ring R01 is a U-seal with an asymmetric profile and shortened inner lip. The recommended working pressure is up to 10 MPa. If the protective ring is installed, the working pressure will increase to 16 MPa. It has very good static and dynamic tightness and it is a good choice for specific requirements, wide operating temperature range and easy installation.

Light hydraulic cylinders.
Pneumatic cilinders
Earth moving equipment
Industrial vehicles
Agriculture equipment

Standard material
Material base NBR 85 NBR 85 NBR 80 FPM 85
Material code N4280 N5185 N7272 F9193

Alternate materials:
For applications that may require alternative materials or for verification current availability of tools and part numbers, contact us.

Pressure, Speed
Working pressure, P 10 MPa
Running speed, v 0,5 m/s
Medium, Working Temperature
Material code N4280 N5185 N7272 F9193
Hydraulic oils HL, HLP -30 to 100˚C -50 to 90˚C -60 to 80˚C -15 to +200˚C
HFA, HFB fluids +5 to +60˚C +5 to +60˚C +5 to +60˚C
HFC fluids -30 to +60˚C -30 to +60˚C -30 to +60˚C
HFD fluids -15 to +200˚C
Water +5 to +90˚C +5 to +90˚C +5 to +80˚C
Mineral greases -30 to +100˚C -50 to +90˚C -60 to +80˚C -15 to +200˚C
Max. permissible gap dimension, emax
Max operating pressure
S ≤ 7,5mm S > 7,5mm
5 Mpa 0,30 0,35
10 Mpa 0,20 0,25
Surface quality*
Surface roughness Ra Rmax
Sliding surfaces 0.05 .. 0,3μm ≤ 2,5 μm
Groove base ≤ 1,6 μm ≤ 6,3 μm
Groove flanks ≤ 3,0 μm ≤ 15 μm

*Contact area Mr = 50% to 90% at cutting depth c=Rz/2 and reference line Cref=0%