Double-Lipped Rod U-Cup Seal

double lipped rod u-cup seal

Series 117: Double-Lipped Rod U-Cup Seal

The 117 Series U-cup seal is a high-performance, double-lipped seal for use as a primary seal, typically in moderate to high-pressure applications. Its asymmetrical design ensures that the seal lip forces are optimized for every cross section and diameter. When used within a sealing system, the 117 plays a key component of System Seals’ Zero Leak Technology. Manufactured in a variety of materials and sizes from 6 mm up to 2100 mm in standard or custom diameters.

Double-lipped Seal

Extremely strong lipped seal that is optimized for maximum performance.  See why our System Seals Zero Leak Technology is so effective today by calling us with your order.



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

Double-lipped seal


The 117 Series U-cup seal is typically used as a primary seal in moderate to high-pressure applications. In applications using a sealing system, it is often used as a secondary seal with the 124 Series buffer seal.

Typical applications include:

  • Mining
  • Agricultural Hydraulics
  • Construction Equipment
  • Presses
  • Injection Molding Machines

The 117 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.

Material Code
Polyurethane H-PU MP03
Polyurethane TPU MP50
Temperature MP03


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.