Mechanical seal 4HG

Technical Data Mechanical seal IS4HG

Operating pressure Up to 6 bar, dynamic
Up to 25 bar, static
Temperature 0 °C to 70 °C
Bearing bracket (seal size) R06 (100), R08 (120)
Business type Engineered

Brand

KSB

Compact
Single mechanical seal, bi-directional and balanced.
Tailored to the seal installation space and pump
requirements. The shaft protecting sleeve is integrated
in the mechanical seal.
Applications
The materials selected are optimally suited to seawater
applications. Springs made of Hastelloy, all metal
components made of super duplex stainless steel.
Versatile
For all operating conditions the pump is approved for.
Reliable
Dynamic design with multi-spring arrangement. Sturdy
and practical seal design
Service-friendly
The modular design facilitates installation without
assembly fixtures or adjusting dimensions, ensuring
optimal pre-loading of the mechanical seal and
low wear

Technical Description

Technical Description Mechanical seal 4HG

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 4HG

API 682 applications in the chemical and petrochemical industries

Materials

Materials Seal 4HG

Primary ring: “A“ carbon (A) / SiC-Si (Q2)
Mating ring: SiC-Si (Q2)
Secondary sealing elements: Statotherm® (G)
Metal bellows: Inconel® 718 (M6)
Other Components: Carpenter® 42 (T4)

Benefits

The throttling bush enables connection to a gas, steam or liquid quench, depending on the seal variant. This prevents outboard incrustations at the seal.

The mechanical seal is available in a hard-soft combination of silicon carbide and carbon graphite, or in a hard-hard combination of silicon carbide and silicon carbide. The bellows made of Inconel® 718 and the secondary sealing elements made of pure graphite have an excellent chemical resistance and are especially suited for applications with high temperatures.