Rod Seal U-Cup – Asymmetrical – AE Ring



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


The 135 Series U-cup seal is typically used in high-clearance applications as a primary seal and functions well in moderate to high pressures. It is a popular choice to replace V-packing sets.

Typical Applications

  • Steel and aluminum processing
  • Mining
  • Agriculture
  • Construction equipment
  • Presses
  • Injection molding machines


The 135 Series rod seal features high-grade polyurethane. Standard materials are MP03 machined H-PU, available up to 2100 mm in diameter. 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, PTFE with bronze filler and PEEK.

Material Code
Polyurethane H-PU / POM MP30
Hydrogenated NBR-PTFE/Bz MN32
Temperature MP30
hydraulic oil -20…+115 -5…+240
water oil emulsions (HFA) +5…+55 +40…+130
water-glycol fluids (HFC) -20…+55 -5…+130
polyol esters (HFD)
water +5…+55 +40…+130
speed 0.5m/s (1.6 ft/sec)
pressure <1380 bar (20000 psi)

Note: for other materials or fluids please contact our engineering department.

Download Line Sheet
Download CAD Inches
Download CAD Metrics

Learn more about System Seals

Download the System Seals Steel and Metal Processing catalog to learn more about our proprietary seals and how we help steel and aluminum mills save millions of dollars in uptime and productivity.