Type 5840 Slurry Seals | John Crane Mechanical Seals
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Type 5840

Cost-effective Cartridge Slurry Seal

Our Type 5840 single-cartridge seal encompasses many of the advantages associated with heavy-duty seal design, encased in a cost-effective package. Designed for the volume requirements associated with general mining processing duties, it contains robust primary and secondary seal face materials, making it the perfect general-purpose seal for slurry applications.



  • California Residents: PROPOSITION 65 WARNING
  • Non-clogging, elastomer-encased cone spring applies constant spring load, eliminating dynamic O-rings.
  • Hydraulically balanced design with no sliding O-rings to cause hang-up.
  • Operates without flush, removing the need for circulation plans.
  • Operates with or without water quench.
  • Cartridge configuration allows for ease of installation.
  • Standard materials specified to meet the requirements of many duties; alternatives available where required.
  • Fully interchangeable with many designs already installed in the field.


Temperature Limits

167°F to 248°F/75°C to 120°C with water quench

Pressure Limits

300 psi(g)/21 bar(g)

Speed Limits


Standard Materials

Wetted metal components: Duplex, Stainless steel

Other metal components: 302 stainless steel, 316 stainless steel

Sealing rings: Silicon carbide

Elastomers: Tetrafluoroethylene/propylene, copolymer (TFE/P)

Recommended Applications

  • 流程泵
  • 其他转动设备

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