Mechanical seal 4KSBM6T

Technical Data Mechanical seal IS4KSBM6T

Shaft diameter Up to 110 mm
Pressure Up to 42 bar
Temperature -10 to 176 °C
Bearing bracket (seal size) B02 (050), B03 (060), B05 (079), B06 (100)
Sliding velocity Up to 23 m/s

Brand

KSB

Configurable flange connections
For API Plans 11, 12, 21, 22, 23, 31, 32, 41, +53 (A, B, C), +54, +61 (62).
Fixed throttling bush
Optionally floating.
Three strong torque transmitting elements
For transmitting the rotation and for vibration damping.
Seal face material
Combination of hard and soft materials, e.g. silicon carbide (versus carbon graphite), highly resistant to blistering.
Multi-spring arrangement
Made of C276 alloy
Rotating flexible elements
With O-ring as secondary seal.
Optional cooled gland packing chamber
(Plan 02) and connections for Plan 23 with high-efficiency pumping ring

Technical Description

Technical Description Mechanical seal 4KSBM6T

Design Double cartridge seal
Type Stationary, balanced
Springs Multi-spring arrangement
Direction of rotation Bi-directional

Applications

Applications Seal 4KSBM6T

API 682 applications in the chemical and petrochemical industries

Materials

Materials Seal 4KSBM6T

Inboard Primary and mating ring SiC (Q1)
Outboard Primary ring: “B” carbon (B)
Mating ring: SiC (Q1)
Elastomers EPDM (E), FKM (V)
Springs 1.4571 (G)
Other Components 1.4571 (G) / 1.4462 (G1) / 1.4539 (G3)

Benefits

The double cartridge seal can be connected to all common API Plans, such as 01, 02, 11, 31, 32 + 52, 53 (A, B, C) and 23 + 52, 53 (A, B, C). The seals are available for all of KSB’s API pumps.

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.