Mechanical seal KSB
4EYS
Technical Data Mechanical seal 4EYS
- Operating pressure Up to 16 bar dynamic, Up to 24 bar static
- Temperature Up to 350 °C
- Seal size (bearing bracket)”
- Etabloc SYT, Etaline SYT 028 (shaft unit 25)
- Etanorm SYT 033 (shaft unit 25), 048 (shaft unit 35/55)
Temperature limits depending on the operating mode of the pump
Technical Description Mechanical seal 4EYS
- Design Single mechanical seal*
- Type Dynamic, unbalanced
- Springs Multi-spring arrangement
- Direction of rotation Bi-directional
In tandem arrangement also for use as double mechanical seal
Benefits
Benefits Mechanical seal 4EYS
The axial spring force is evenly distributed over the entire circumference of the primary ring. This minimises wear and contributes to a long seal life.
Open design of the area around the springs to prevent the springs from being blocked by deposits.
Large dynamic O-ring; flexible and less sensitive to start-up conditions. High resistance to modern, synthetic thermal oils.
Applications Seal 4EYS
Heat transfer engineering and hot water recirculation
Suitable for pump
Suitable for KSB’s Etanorm SYT, Etabloc SYT, Etaline SYT
Materials Seal 4EYS
- Primary ring “A” carbon (A), “B” carbon (B),
- SiC (Q1), SiC porous (Q7))
- Mating ring SiC (Q1), SiC porous (Q7)
- Elastomers FKM (V7), EPDM (E)
- Springs 1.4571 (G)
- Metallic components 1.4571 (G)
Further material combinations and certificates on request