Mechanical seal KSB
4KBL
Technical Data Mechanical seal 4KBL
- Operating pressure Up to 25 bar, dynamic
Up to 37.5 bar, static - Temperature 0 °C to 100 °C
- Bearing bracket
(seal size) P03 (031), P04 (038)* - Business type Standard (KSB EasySelect)
For seal size 038, two versions are available: “G” version = cast, “V” version = turned
Technical Description Mechanical seal 4KBL
- Design Single mechanical seal
- Type Dynamic, balanced
- Springs Multi-spring arrangement
- Direction of rotation Bi-directional
Specifications
- Robust
Single mechanical seal, bi-directional and balanced. Tailored to the seal installation space of the pump, suitable for fluids with high solids content. - Dependable
Dynamic design, multiple springs located outside the fluid handled. The springs are insensitive to contamination and provide uniform surface pressure across the seal faces, thus ensuring a long service life. - Different material variants
The mating ring can be made of tungsten carbide or, alternatively, silicon carbide. Elastomers are available in FKM or, alternatively, perfluoroelastomer (FFKM). - Service-friendly
Easy to install, no adjusting dimension required - Compact
The pump’s shaft protecting sleeve is integrated in the mechanical seal.
The space between the two mechanical seals is flushed with a buffer or barrier fluid, depending on the application. This completely absorbs any leakage of the fluid pumped. In addition, the heat is transported away from this area. The double pressure balanced mechanical seal can be operated with pressurised barrier fluid or unpressurised buffer fluid.
Applications Seal 4KBL
waste water containing stringy material and abrasive particles
Suitable for pump
Suitable for KSB’s KWP-Bloc
Materials Seal 4KBL
- Primary ring SiC (Q1) / tungsten carbide (U), shrink-fitted
- Mating ring SiC (Q1) / tungsten carbide (U), shrink-fitted
- Elastomers FKM (V) / FFKM (K)
- Springs 1.4571 (G)
- Other Components 1.4462 (G1)
Other material combinations on request