Suitable for a wide range of services conditions.


  • For use with extremely corrosive chemicals, chemical, and refinery processing pump applications.
  • For process services requiring corrosion resistance.

The DS-85N seal is the ideal for general purpose applications. Its Alloy 20, Hastelloy C, Titanium, AM 350 bellows provide corrosion resistance in a board rang of services. Its cost-effective design, combined with a reliable performance.

 View Sheet

Operating Conditions

  • Max. Operating Pressure : 25 kg/cm 2 *
  • Temperature Range : -40 to 220 *
  • Max. Rubbing Speed : 20 m/s

*(Depend on combination of materials)

Design Features/Benefits

  • Results in even stress distribution with benefits of greater strength and higher rate of flexibility: seal is bi-rotational and inherently pressure balanced.
  • Is resistance to clogging and therefore ideal for slurries and fibrous liquids. Similarly, seal unit is easy to clean and sterilize in place.
  • Ensures a simple-to-fit seal, with superior heat dissipation paths, Seal unit is reliable and does not wear the shaft.


Standard Materials

  • Metal Bellows : Alloy 20, Hastelloy C, Titanium, AM 350
  • Adaptive Hardware: Alloy 20, Hastelloy C, Titanium, SUS 316
  • Rotary Face : Silicon Carbide/Tungsten Carbide/Carbon
  • Stationary Face : Silicon Carbide/Tungsten Carbide/Carbon
  • Secondary Seals : Fluoroelastomer/Per-Fluoroelastomer/Chemraz

*(Other configuration of materials also available on request)