Symmetrical Piston U-Cup
Series 206: Symmetrical Piston U-Cup
The 206 Series Symmetrical Piston U-cup is a popular System Seals design used in standard duty applications. Its symmetrical design creates equal seal force across both seal lips. This gives the seal the capability to function as both a piston seal and rod seal or alternatively to seal dynamically on both the outside and inside diameters. This feature is often appreciated when reduced product inventories are desired. Manufactured in a variety of materials and sizes from 6 mm to 2100 mm in standard or custom diameters.
Installation
Benefits
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 2100 mm
Applications
The 206 Symmetrical Piston Series U-cup, due to its versatility as both a piston and rod seal, can be used in a wide variety of applications. Recommended where dynamic sealing action is required simultaneously on the inside and outside diameters. Examples are often encountered in specialty sensors, bolt tension equipment and hollow cylinders.
Typical applications include:
- Mobile Hydraulics
- Hydraulic Cylinder Rebuild
- Agricultural Hydraulics
- Construction Equipment
- Hydraulic Presses
- Injection Molding Machines
The 206 Series Symmetrical Piston U-cup seal features high-grade polyurethane. Standard materials are MP03 machined H-PU, available up to 2100 mm in diameter, MP50 and MN01 injection-molded TPU. To suit a variety of applications, the series is also available in NBR, H-NBR, EPDM and high temperature-resistant FPM.
| Material | Code |
|---|---|
| Polyurethane H-PU | MP03 |
| Polyurethane TPU | MP50 |
| Temperature | MP03 °C |
°F |
MP50 °C |
°F |
|---|---|---|---|---|
| hydraulic oil | -20…+115 | -5…+240 | -30…+110 | -20…+230 |
| water oil emulsions (HFA) | +5…+55 | +40…+130 | +5…+50 | +40…+120 |
| water-glycol fl uids (HFC) | -20…+55 | -5….+130 | -30…+40 | -20…+100 |
| polyol esters (HFD) | - | - | - | - |
| water | +5…+55 | +40…+130 | +5…+50 | +40…+120 |
| Speed | 0.5 m/s (1.6 ft/sec) | |||
| Pressure | 400 bar (6000 psi) | |||
Note:for other materials or fluids please contact our engineering department.
