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4ES Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4ES

For the Etanorm-R pump type series. Single cartridge seal in stationary design. The large springs are located outside the fluid handled and thus protected from contamination.

Main Applications

  • Drinking water
  • Service water
  • Hot water

Technical Data

Cartridge seal
Yes
Design
Stationary
Balancing
Balanced mechanical seal
Sealing type
Single
Maximum allowable fluid temperature
140 °C

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Benefits

  • Stationary, robust seal design
  • The large springs with high axial mobility are located outside the fluid handled and thus protected from contamination.
  • The mechanical seal cover is centred on the pump cover and confines the gasket.

Technical Data

Maximum allowable axial movement
1.5 mm
Minimum allowable axial movement
-1.5 mm
Component type series
KSB Etanorm-R [B]
Cartridge seal
Yes
Maximum allowable dynamic pressure
16 bar
Design
Stationary
Balancing
Balanced mechanical seal
Sealing type
Single
Mtrl metallic compon.mech.seal
1.4571
Mtrl mech.seal spring
1.4571
Mtrl Secondary seal inboard
FKM,
EPDM
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
16 m/s
Spring design
Multiple springs
Maximum allowable static pressure
24 bar
Maximum allowable fluid temperature
140 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

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