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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
X2CRNIMOCUWN25-7-4,
X6CRNIMOTI17-12-2
Mtrl mech.seal spring
NIMO16CR16TI
Mtrl Secondary seal inboard
FLUORINATED RUBBER,
ETHYLENE-PROPYLENE-DIENE-RUBBER
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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