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207 Series: Piston Seal U-Cup – Symmetrical – OR Loaded
The 207 Series Energized Symmetrical Piston U-Cup is a popular and versatile design with a wide range of applications.
207 Series
The 207 Series Energized Symmetrical Piston U-cup Seal is one of System Seals’ most popular designs used in standard-duty applications. The symmetrical design utilizes an O-ring loader to maximize lip force, making it the preferred choice in lower-pressure applications. The symmetrical design ensures that the seal lip forces are equal for every cross section and diameter. The 207 is widely used in standard-to moderate-duty hydraulic applications. Manufactured in a variety of materials and sizes from 6 mm up to 2100 mm in standard and custom diameters
Installation Drawing
Material Ranges
The 207 Series Energized Symmetrical Piston U-Cup features high-grade polyurethane. Standard materials are MP03 machined H-PU, available up to 2100 mm 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.
| 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
0.5 m/s (1.6 ft/sec)
Pressure
400 bar (6000 psi)
Pressure
400 bar (6000 psi)
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
Speed
5 m/s (16.5 ft/sec)
Speed
5 m/s (16.5 ft/sec)
Pressure
400 bar (6000 psi)
Pressure
400 bar (6000 psi)
CAD Files
Engineered Performance
Built to Perform
The 207 Series Energized Symmetrical Piston U-Cup is ideal for applications requiring high sealing forces. This seal is available in a wide range of materials to cover applications where specialty fluids are present. Often used in conjunction with an anti-extrusion ring particularly when seal material has insufficient extrusion resistance. The seal is a symmetrical design allowing use as either for dynamic OD or ID sealing
Benefits
- High pressure capability and wide temperature range
- Excellent fluid compatibility including water-based fluids (H-PU)
- Exceptional abrasion resistance
- Available in diameters up to 2100mm
Applications
- Oil & Gas
- Mobile Hydraulics
- Hydraulic Cylinder Rebuild
- Agricultural Hydraulics
- Construction Equipment
- Hydraulic Presses
- Injection Molding Machines
