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4KST Component mechanical seal

Component mechanical seal 4KST

For the HPH/RPH-HW pump type series. Single, balanced component seal, stationary design. Optimised for operating conditions with extremely high pressures.
Spare Parts

Main Applications

  • Hot water

Technical Data

Cartridge seal
No
Design
Stationary
Balancing
Balanced mechanical seal
Sealing type
Single
Maximum allowable fluid temperature
320 °C

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Benefits

  • The perfect match for hot water applications. The design is tailored to the cooled pump cover.
  • This robust seal is designed for operating conditions with extremely high pressures and temperatures.
  • The solid seal faces abut the metal components and are thus axially secured, which prevents tilting of the seal faces. This ensures reliable sealing and low wear also in extreme conditions.

Technical Data

Maximum allowable axial movement
1 mm
Minimum allowable axial movement
-1 mm
Component type series
KSB HPH [A]
Cartridge seal
No
Maximum allowable dynamic pressure
100 bar
Design
Stationary
Balancing
Balanced mechanical seal
Sealing type
Single
Mtrl metallic compon.mech.seal
1.4122
Mtrl mech.seal spring
1.4571
Mtrl Secondary seal inboard
EPDM
Mtrl Mating ring inboard
Q2 [SIC-C-SI, COMPOSITE]
Mtrl Primary ring inboard
A [CARBON, METAL-IMPREGNATED]
Direction of rotation
Bi-directional
Maximum allowable sliding velocity
40 m/s
Spring design
Multiple springs
Maximum allowable static pressure
100 bar
Maximum allowable fluid temperature
320 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

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