PU187-1.875-375B Polyurethane Piston U-Cup


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  • Model: PU187-1.875-375B
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1-7/8" ID X 2-1/4" OD X 3/8" HT

High Performance Polyurethane Piston U-Cup Seal

The PU Piston U-Cup is an asymmetric piston seal designed to offer effective bore sealing in a wide variety of applications. The outer dynamic lip is shorter and more robust to provide improved sealing and compression set characteristics over conventional U rings. The seal can be used by itself as a single acting seal or fitted back to back in separate grooves for double acting applications.

Piston Seal U-Cup Features:

  • Flexible for easy installation
  • Excellent wear resistance
  • High resistance to extrusion
  • Robust design
  • Wide temperature range

Seal Materials:

  • High Performance Polyurethane
  • 92A Urethane

 Operating conditions:

  • Maximum Speed: 3.0 ft/sec (1.0m/sec)
  • Temperature Range: -65°F +230°F ( -45°C +110°C )
  • Maximum Pressure: 6,000 p.s.i. (400bar)
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