Mechanical seal 4RD

Technical Data Mechanical seal IS4RD

Operating pressure Up to 25 bar, dynamic
Up to 37.5 bar, static
Temperature 0 °C to 140 °C
Shaft unit (seal size)
110 (125), 125 (135),
140 (155), 160 (175)
Business type Standard

Brand

KSB

Dependable mechanical seal 4rd
Dynamic type, multi-spring arrangement, bi-directional and balanced. Sturdy and practical seal design.
Robust mechanical seal 4rd
The primary ring is shrink-fitted into the metal primary ring carrier. This ensures even contact, also under fluctuating pressure and temperature conditions.
Different material
variants mechanical seal 4rd
Elastomers made of EPDM also available with WRAS approval. Metal parts available in super duplex stainless steel (1.4501) for seawater applications.
Service-friendly mechanical seal 4rd
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.
Compact mechanical seal 4rd
The primary ring is kept in position in the torque-transmitting element for transport and installation.

Technical Description

Technical Description Mechanical seal 4RD

Design Single mechanical seal
Type Dynamic, balanced
Springs Multi-spring arrangement
Direction of rotation Bi-directional
Additional information Various wear part kits available,
see ZN3302

Applications

Applications Seal 4OM

raw water
clean water
service wate

Materials

Materials Seal 4OM

Primary ring SiC (Q1)
Mating ring SiC (Q1) / “A“ carbon (A) / “B“ carbon (B)
Elastomers EPDM (E) / FKM (V)
Springs 2.4610 (M)
Other Components 1.4571 (G) / 1.4501 (G4)

Benefits

Dynamic type, multi-spring arrangement, bi-directional and balanced. Sturdy and practical seal design.

The primary ring is shrink-fitted into the metal primary ring carrier. This ensures even contact, also under fluctuating pressure and temperature conditions.

Together with the shaft protecting sleeve and the seal cover of the pump, the mechanical seal can be installed like a cartridge