Slurry seals | Heavy-duty Cartridge Seal for Boiler Feed Circuit Applications


Features mechanical seal Type 5840

  • 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.

Recommended Applications Type 5840

  • Process pumps
  • Other rotating equipment

About Mechanical seal Type 5840

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.

Design Features mechanical seal Type 5840

  • Robust cartridge arrangement, with six (6) group sizes
  • Accommodates shafts 1.37″ to 8.66″/35mm to 220mm
  • Modular construction for reduced inventory and ease
    of reconditioning
  • Hydraulically balanced design with interchangeable
    seal faces
  • Abrasion resistant seal faces in silicon or tungsten carbide
  • Non-clogging cone spring eliminates dynamic O-rings
  • TFE/P standard elastomers
  • No flush is required
  • Anti-rotation pin with O-ring

Material mechanical seal Type 5840

  • Gland Plate Duplex Stainless Steel (wrought) Super Duplex
  • Shaft Sleeve CD4MCU-N Cast 28% Hard Chrome Iron (1.436/1.438)
  • Primary Ring Carrier Alloy C-276
  • Drive Collar 316 Stainless Steel 304 Stainless Steel
    Duplex Stainless Steel
  • Cone Spring AFLAS® (TFE/P)
  • Primary Ring Silicon Carbide Tungsten Carbide
  • Mating Ring (to 5.715″/135mm)
  • Secondary Containment Tungsten Carbide
  • Mating Ring
  • Soc. HD. Capscrew Alloy Steel (Grade 12.9) Zinc PLT
  • Spiral Retaining Ring 302 Stainless Steel
  • Setting Piece 316 Stainless Steel 304 Stainless Steel
  • Hex. HD. Screws 316 Stainless Steel
    • Pin
    • Drive Disc
  • Elastomer AFLAS® (TFE/P

Operating range mechanical seal Type 5840

  • 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 50fps/15m/s

Product Description Type 5840

ype 5840 is a cartridge seal design, suitable for abrasive slurry duties and capable of operating without a quench. A modular construction incorporates a cone spring which avoids clogging and eliminates the dynamic O-ring and risk of hang-up. Seal faces are silicon or tungsten carbide and identical. Adaptive hardware is alloyed stainless steel or high chrome iron to provide both excellent corrosion and abrasive resistance of wetted components. A quench seal option  available of improve service life