Non-Metalic Mechanical Seals

The DSNM™ is designed to suit the Flowserve Polychem 'S' Series non-metalic process pump.


  • Non-metallic wetted components in Silicon Carbide for use with corrosive chemicals
  • Non-Shaft-fretting design to reduce cost in equipment overhaul
  • Cartridge design for ease of installation
  • Hydraulically balanced seal faces
  • FI-DSNM Incorporates pumping ring to maximize cooling and increase seal life with a directed barrier fluid flow path to both sets of seal faces
Non-Metalic Mechanical Seal
Fi-DSNM - Cross Section

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Suitable for the following industries

  • Biodiesel
  • Ethanol