U-Cup NOR221

Design Sketch
Installation Sketch

  • Compact design
  • Symmetrical
  • Single acting
  • O-ring as sealing and preloading element
  • Good static and dynamic sealing effect
  • Simple snap-on assembly
  • Wide range of application (as piston or rod seal)
  • Wide range of applications (alternative to U-cups of other manufacturers)
Most commonly used in the following applications:
  • For radially narrow installation spaces
  • Symmetrical profile enables use as piston and rod seal
  • Use with one-sided pressure load
  • O-ring clamps sealing lips for low-pressure sealing
  • Static sealing by O-ring in the low-pressure range, change to lip seal on activation
  • As system pressure increases, activated O-ring presses lips outward, behavior changes from pinch to lip seal
PRD() - 20240417.1