Rotary Seal – HD – PF



Optimal seal life through consistent lip force through the range of available sizes

One-piece molding lip design

High-retention, press-fit installation design

Works in a wide range of temperatures

Excellent fluid compatibility

Exceptional abrasion resistance

Available in diameters up to 2100 mm


The 442 Series Rotary Seal is used in industrial rotary applications with large deflections or very high speeds.

Typical Applications

  • Steel and Aluminum Processing
  • Pulp and Paper
  • Pumps and Gear Boxes
  • Electrical generation
  • Wind Energy
  • Bearing Manufacturers


The 442 Series Rotary Seal is commonly available in both high-grade NBR compound and a high-temperature FPM compound. For extremely low temperatures, the seal can be supplied in silicone. The internal springs are constructed from 316 stainless steel.

Material Code
Nitrile rubber NBR + steel MN40
Fluoroelastomer FPM +steel MF30
Temperature NBR/metal MN40
NBR -20…+120 -4…+248
FPM +20…+220 +4…+428
Silicone -60…+180 -76…+428
Max Speed 35 m/s (115 ft/sec)
Max. Misalignment 2.5mm
Shaft Hardness >50 HRC

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.