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Seals for Contaminated Liquids

Whether for the steel industry, for sewage treatment plants, for power stations or for the paper industry, with our range of seals for pumping either low or high levels of contaminated liquids, we consistently rely on protected spring chambers without direct contact with the medium (the liquid) itself.

If at all possible in the system and considering their longer duration service life and ease of maintenance, we recommend stationary, cartridge-mounted mechanical seals. We adapt our seals to each individual installation location and, as a manufacturer, always find an economical solution for the requirements of your plant.

Contaminated Liquids
CS 20

CS 20
Cartridge mounted seals, single-acting mechanical seals with higher radial and axial tolerances and external spring assembly

CS 20

Characteristics:

  • pressure balanced, stationary construction type
  • externally-flushed and self-flushed depending on requirements
  • multiple spring-loaded
  • Spring outside of pumped medium
  • independent of rotational direction
  • temperature dependent on the auxiliary seals
  • applicable up to 25 bar
  • V umax. = 15 m/s

Different Versions for Individualisation

Construction Materials:
1.4571, 1.4462, HC4
Materials Rotary and Stationary Ring:
Silicon Carbide, Tungsten Carbide, A/B Carbon
Materials Auxiliary seals:
NBR, Viton (FDA), EPDM (FDA), Kalrez, PTFE
Other Materials:
subject to enquiry
Dimensions / Sizes:
30-340 mm
CS 21

CS 21
Cartridge mounted, double-acting mechanical seals for special applications e.g. in the chemical industry

CS 21

Characteristics:

  • pressure balanced, stationary construction type
  • externally-flushed and self-flushed depending on requirements
  • multiple spring-loaded
  • Spring outside of pumped medium
  • independent of rotational direction
  • temperature dependent on the auxiliary seals
  • applicable up to 25 bar
  • V umax. = 15 m/s

Different Versions for Individualisation

Construction Materials:
1.4571, 1.4462, HC4
Materials Rotary and Stationary Ring:
Silicon Carbide, Tungsten Carbide, A/B Carbon
Materials Auxiliary seals:
NBR, Viton (FDA), EPDM (FDA), Kalrez, PTFE
Other Materials:
subject to enquiry
Dimensions / Sizes:
24-125 mm
HD 21

HD 21
Dynamic, single-acting mechanical seals, multiple spring-loaded

HD 21

independentCharacteristics:

  • pressure balanced, dynamic construction type
  • externally-flushed and self-flushed depending on requirements
  • multiple spring-loaded
  • Spring outside of pumped medium
  • independent of rotational direction
  • temperature dependent on the auxiliary seals
  • applicable up to 25 bar
  • V umax. = 15 m/s

Different Versions for Individualisation

Construction Materials:
1.4571, 1.4462, HC4
Materials Rotary and Stationary Ring:
Silicon Carbide, Tungsten Carbide, A/B Carbon
Materials Auxiliary seals:
NBR, Viton (FDA), EPDM (FDA), Kalrez, PTFE
Other Materials:
subject to enquiry
Dimensions / Sizes:
in accordance with DIN norm up to 100 mm, above that subject to enquiry
MD 11

MD 11
Dynamic, single-acting mechanical seals

MD 11

Characteristics:

  • dynamic construction type
  • externally-flushed and self-flushed depending on requirements
  • temperature dependent on the auxiliary seals
  • applicable up to 10 bar
  • V umax. = 12 m/s
  • Installation length acording to DIN 24960

Different Versions for Individualisation

Construction Materials:
1.4571, 1.4310
Materials Rotary and Stationary Ring:
Silicon Carbide, Tungsten Carbide, A/B Carbon
Materials Auxiliary seals:
NBR, Viton (FDA), EPDM (FDA), Kalrez, PTFE
Other Materials:
subject to enquiry
Dimensions / Sizes:
in accordance with DIN norm up to 100 mm
MD 17

MD 17
Dynamic, single-acting mechanical seal, independent of rotational direction

MD 17

Characteristics:

  • dynamic construction type
  • externally-flushed and self-flushed depending on requirements
  • temperature dependent on the auxiliary seals
  • applicable up to 10 bar
  • V umax. = 12 m/s
  • Installation length acording to DIN 24960

Different Versions for Individualisation

Construction Materials:
1.4571, 1.4310
Materials Rotary and Stationary Ring:
Silicon Carbide, Tungsten Carbide, A/B Carbon, Chrome Steel
Materials Auxiliary seals:
NBR, Viton (FDA), EPDM (FDA), PTFE, Kalrez
Other Materials:
subject to enquiry
Dimensions / Sizes:
in accordance with DIN norm up to 100 mm, above that subject to enquiry
MD 31

MD 31
Dynamic, single-acting bellow seal, independent of rotational direction

MD 31

Characteristics:

  • dynamic construction type
  • externally-flushed and self-flushed depending on requirements
  • independent of rotational direction
  • temperature dependent on the auxiliary seals
  • applicable up to 10 bar
  • V umax. = 12 m/s
  • Installation length acording to DIN 24960

Different Versions for Individualisation

Construction Materials:
1.4571, 1.4310
Materials Rotary and Stationary Ring:
Siliciumkarbid, Tungsten Carbide, A/B Kohle
Materials Auxiliary seals:
NBR, Viton, EPDM
Other Materials:
subject to enquiry
Dimensions / Sizes:
in accordance with DIN norm up to 100 mm, above that subject to enquiry
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