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4RD/4RDB Component mechanical seal

Component mechanical seal 4RD/4RDB

For the RDLO pump type series. Single, balanced component seal, dynamic design.
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Main Applications

  • Raw water
  • Pure water
  • Service water

Technical Data

Cartridge seal
No
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Single
Maximum allowable fluid temperature
130 °C

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Benefits

  • The primary ring is shrink-fitted into the metal primary ring carrier. This ensures even and stable contact.
  • Easy to install, no adjusting dimension required Together with the shaft protecting sleeve and the seal cover, the mechanical seal can be installed like a cartridge.
  • 4RD – torque transmission by key

Technical Data

Maximum allowable axial movement
2.5 mm
Minimum allowable axial movement
-2.5 mm
Component type series
KSB RDLO [A]
Cartridge seal
No
Maximum allowable dynamic pressure
25 bar
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Single
Mtrl metallic compon.mech.seal
1.4501,
1.4571
Mtrl mech.seal spring
2.4610
Mtrl Secondary seal inboard
FKM,
EPDM
Mtrl Mating ring inboard
Q1 [SIC, DRUCKLOS GESINTERT]
Mtrl Primary ring inboard
A [CARBON, METAL-IMPREGNATED],
B [CARBON, RESIN-IMPREGNATED],
Q1 [SIC, DRUCKLOS GESINTERT]
Direction of rotation
Bi-directional
Maximum allowable sliding velocity
16 m/s
Spring design
Multiple springs
Maximum allowable static pressure
37.5 bar
Maximum allowable fluid temperature
130 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

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