Stuffing box seal for gear pumps

Stuffing box

The stuffing box is a comparably simple and extremely robust shaft seal for WITTE gear pumps. This can be designed, if necessary, as a double seal with buffering medium. A braided packing made of expanded pure graphite with textile fiber is normally used; other materials are available depending on the application.


Single stuffing box

Can be used for the following pumps:

Operating parameters

Pressure suction side:
1 max. 10 ba
Viscosity:
1 – 10,000,000 mPas
Temperature:
max. 300 °C

Double stuffing box

Can be used for the following pumps:

*only as special variation

Operating parameters

Pressure suction side
Vacuum up to max. 15 bar
Viscosity:
1 – 10,000,000 mPas
Temperature:
max. 300 °C