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Cartridge seals

On average, only 10% of mechanical seals will last for their entire service life. The remaining 90% will fail prematurely, mostly due to improper operation, assembly or selection. Much better operating characteristics can be achieved by using cartridge seals. A cartridge seal is a compact unit ensuring its easy replacement and preventing mistakes during assembly. This type of design allows considerable axial shifts, whereas its hydraulic relief makes it possible to use it at high operating pressures.

Design:

- the springs are installed in the mating part of the seal, which allows high rotation speeds;

- the dynamically loaded secondary seals are installed in the 'atmospheric' part of the seal, which prevents blocking their operation due to working liquid sediments;

- the dynamically loaded secondary seals do not contact the shaft sleeve and, therefore, do not influence the sleeve alignment in relation to the shaft;

- the compact design of the sealing surfaces ensures optimal torque transfer even at maximum allowable angle and axial shaft deviations;

- the design of the multi-spring seals ensures even load distribution on the sealing surface;

- the springs are not subjected to permanent dynamic load and do not contact the working  liquid, which prevents their blocking and ensures reliable operation.

The double hydraulic relief makes the seal reliable, ensures its unencumbered operation even in case of sharp pressure fluctuations, and completely prevents the seal from failing unexpectedly. 


  Manual for operation of mechanical seals UCA, UCB, UCC, UCD 1.42 MB

  Cartridge seals UCA, UCB 214.03 kB

  Cartridge seals UCC, UCD 217.08 kB





  $0.00
Description


Analog:

AESSEAL CII / SCUSI / SISS, Burgmann CARTEX-SO


Design:

  • - single seal design;
  • - relieved;
  • - does not depend on the direction of rotation.

Application:

  • - low viscosity liquids which do not contain solid particles;
  • - in the equipment where the process fluid does not contaminate the environment.

Materials:

  • Sealing surfaces: silicon carbide; tungsten carbide; carbographite
  • Secondary seals: Viton; EPDM; NBR; PTFE
  • Springs: X12CrNi17.7
  • Other metal parts: stainless steel.

Operating conditions:


Pressure:

  • p = 25 bars

Temperature:

  • t = 40 … 120ВєРЎ (NBR)
  • t = 50 … 150ВєРЎ (EPDM)
  • t = 40 … 250ВєРЎ (Viton)

Speed:

v = 25 m/s

 

Name
Cartridge mechanical seals series UCA
pcs.
  $0.00
Description


Analog:

AESSEAL CURC / SMSS, Burgmann CARTEX-SN, Chesterton 150


Design:

  • - single seal design;
  • - relieved;
  • - does not depend on the direction of rotation;
  • - equipped with a flush pipe assembly.

Application:

  • - low viscosity liquids which do not contain solid particles;
  • - in the equipment where the delivery fluid does not contaminate the environment;
  • - liquids with residues.

Materials:

  • Sealing surfaces: silicon carbide; tungsten carbide; carbographite
  • Secondary seals: Viton; EPDM; NBR; PTFE
  • Springs: X12CrNi17.7
  • Other metal parts: stainless steel.

Operating conditions:


Pressure:

  • p = 25 bars

Temperature:

  • t = 40 … 120ВєРЎ (NBR)
  • t = 50 … 150ВєРЎ (EPDM)
  • t = 40 … 250ВєРЎ (Viton)

Speed:

v = 25 m/s

 

Name
Cartridge mechanical seals series UCB
pcs.
  $0.00
Description


Analog:

AESSEAL CURE / SMSR, Burgmann CARTEX-QN, Chesterton 150


Design:

  • - double seal design;
  • - double relief;
  • - does not depend on the dirstion of rotation;
  • - use of quench liquids is specified.

Application:

  • - liquids with low lubricating properties;
  • - liquids which can have sediments;
  • - chemically aggressive liquids.

Materials:

  • sealing surfaces: silicon carbide; tungsten carbide; carbographite
  • secondary seals: Viton; EPDM; NBR; PTFE
  • springs: X12CrNi17.7
  • other metal parts: stainless steel.

Operating conditions:


Pressure:

  • p = 25 bars

Temperature:

  • t = 40 … 120ВєРЎ (NBR)
  • t = 50 … 150ВєРЎ (EPDM)
  • t = 40 … 250ВєРЎ (Viton)

Speed:

v = 25 m/s

 

Name
Cartridge mechanical seals series UCC
pcs.
  $0.00
Description


Analog:

AESSEAL CDSA / DISP, Burgmann CARTEX-DN, Chesterton 250


Design:

  • - double seal design;
  • - double relief;
  • - does not depend on the direction of rotation.

Application:

  • - liquids with low lubricating properties;
  • - liquids which may have sediments;
  • - chemically aggressive liquids.

Materials:

  • sealing surfaces: silicon carbide; tungsten carbide; carbographite
  • secondary seals: Viton; EPDM; NBR; PTFE
  • springs: X12CrNi17.7
  • other metal parts: stainless steel.

Operating conditions:


Pressure:

  • p = 25 bars

Temperature:

  • t = 40 … 120ВєРЎ (NBR)
  • t = 50 … 150ВєРЎ (EPDM)
  • t = 40 … 250ВєРЎ (Viton)

Speed:

v = 25 m/s

 

Name
Cartridge mechanical seals series UCD
pcs.