Static Seal



No twisting or rolling during installation

Direct retrofit to O-Ring and backup ring designs

Extrusion resistant

Abrasion-resistant polyurethane


The 261 Series Mill-Duty Static Seal is used as the primary static seal in heavy duty steel and aluminum applications and severe conditions.

Typical Applications

  • Steel and aluminum processing
  • Mobile Hydraulics
  • Hydraulic Cylinder Rebuild
  • Agricultural Hydraulics
  • Construction Equipment


The 261 Series Mill-Duty Static Seal features high-grade polyurethane. Standard materials are MP03 machined H-PU available up to 2100 mm in diameter.

Material Code
Polyurethane H-PU MP03
Nitrile NBR MN01
Fluoroelastomer FPM MF01
Temperature MP03
hydraulic oil -20…+115 -5…+240
water oil emulsions (HFA) +5…+55 +40…+130
water-glycol fl uids (HFC) -20…+55 -5….+130
polyol esters (HFD)
water +5…+55 +40…+130
Speed 0.5 m/s (1.6 ft/sec)
Pressure 1380 bar (20000 psi)

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

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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.