139 Series: Rod Seal
The 139 Series U-cup seal is typically used in high-clearance applications as a primary seal and functions well in moderate to high pressures.
139 Series
The 139 Series U-cup seal is typically used in high-clearance applications as a primary seal and functions well in moderate to high pressures.
Installation Drawing
Material Ranges
The 139 Series rod seal features high-grade polyurethane. Standard materials are MP03 machined H-PU, available up to 2100mm in diameter, and MP50 injection-molded TPU. To suit a variety of applications the series is also available in NBR, H-NBR, EPDM and high temperature-resistant FPM. The backup ring materials include POM, Polyamide and PEEK.
| Polyurethane H-PU | MP03 |
| Polyurethane TPU | MP50 |
Temperature Ranges
MP03
MP50
°C
°F
Hydraulic oil
-20° + 115°
Hydraulic oil
-5° + 240°
Water oil emulsions (HFA)
+5° + 55°
Water oil emulsions (HFA)
+40° + 130°
Water-glycol fluids (HFC)
-20° + 55°
Water-glycol fluids (HFC)
-5° + 130°
Water
+5° + 55°
Water
+40° + 130°
Speed
0.5 m/s (1.6 ft/sec)
Speed
Pressure
400 bar (6000 psi)
Pressure
Hydraulic oil
-30° + 110°
Hydraulic oil
-20° + 230°
Water oil emulsions (HFA)
+5° + 50°
Water oil emulsions (HFA)
+40° + 120°
Water-glycol fluids (HFC)
-30° + 40°
Water-glycol fluids (HFC)
-20° + 100°
Water
+5° + 50°
Water
+40° + 120°
Designed for flexibility across materials, sizes, and performance requirements. Standard and custom diameters ensure optimal integration into your system.
Engineered Performance
Built to Perform
Engineered for demanding hydraulic environments, this sealing solution delivers reliable performance under high pressure, wide temperature ranges, and aggressive media—helping extend service life and reduce downtime.
Benefits
- Designed specifically for large clearance applications
- High pressure capability and wide temperature range
- Excellent fluid compatibility including water-based fluids (H-PU)
- Exceptional abrasion resistance
- Highly extrusion resistant
- Available in diameters up to 2100mm
Applications
- Forging and extrusion presses
- Stamping presses
- Mining
- Agriculture
- Construction equipment
- Injection molding machines
