Rod U-Cup Seal with Full-Face Backup Ring
Series 137: Rod U-Cup Seal with Full-Face Backup Ring
The 137 Series U-cup seal is a high-performance, double-lipped seal for use in high-clearance applications, typically in moderate to high-pressure environments. Its asymmetrical design ensures that the seal lip forces are optimized for every cross section and diameter. The full-face backup ring supports the seal and ensures maximum extrusion resistance in a larger than normal clearance application. Manufactured in a variety of materials and sizes from 6 mm up to 2100 mm in diameter in standard or custom sizes.
Installation
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 2100 mm
Applications
The 137 Series U-cup seal is typically used in high-clearance applications as a primary seal and functions well in moderate to high pressures.
Typical Applications
- Mining
- Agriculture
- Construction equipment
- Presses
- Injection molding machines
The 137 Series rod seal 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. The backup ring materials include POM and PEEK
| 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.
