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4MC Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4MC

For the Movitec pump type series. Single, balanced cartridge seal designed for installation in vertical pumps for applications with high pressures and speeds.

Main Applications

  • Hot water and cooling water recirculation
  • Boiler feed applications

Technical Data

Cartridge seal
Yes
Design
Stationary
Balancing
Balanced mechanical seal
Sealing type
Single
Maximum allowable fluid temperature
200 °C

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Benefits

  • Single cartridge mechanical seal, stationary design.
  • Designed for installation in vertical pumps for applications with high pressures and speeds.
  • The stationary design ensures that the sealing clearance is positioned closer to the impellers. This lowers the risk of dry running in the event of a gas pocket forming in the seal chamber.

Technical Data

Maximum allowable axial movement
1.5 mm
Minimum allowable axial movement
-1.5 mm
Component type series
KSB Movitec [A]
Cartridge seal
Yes
Maximum allowable dynamic pressure
40 bar
Design
Stationary
Balancing
Balanced mechanical seal
Sealing type
Single
Mtrl metallic compon.mech.seal
X6CRNIMOTI17-12-2
Mtrl mech.seal spring
X6CRNIMOTI17-12-2
Mtrl Secondary seal inboard
FLUORINATED RUBBER,
ETHYLENE-PROPYLENE-DIENE-RUBBER
Mtrl Mating ring inboard
A [CARBON, METAL-IMPREGNATED],
B [CARBON, RESIN-IMPREGNATED],
Q1 [SIC, DRUCKLOS GESINTERT]
Mtrl Primary ring inboard
Q1 [SIC, DRUCKLOS GESINTERT]
Direction of rotation
Bi-directional
Maximum allowable sliding velocity
8 m/s
Spring design
Multiple springs,
Single spring
Maximum allowable static pressure
45 bar
Maximum allowable fluid temperature
200 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

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