Cartridge Unbalanced Single Mechanical Seals

LPS-181-U & LPS-183-U

LPS-181-U & LPS-183-U series are single acting cartridge design unbalanced Mechanical Seals suitable for Slurries, Sludge’s, Syrup, Water, Oil & Chemicals used in moderate pressure pumps. These seals are independent of direction of rotation, pre assembled cartridge unit easy to install with different PCD’s pumps due to slots provided on gland plate and these seals can be offered in balanced and unbalanced configuration. As all parts are Interchangeable, one can convert this series LPS-181-U to LPS-183-U by changing only the dynamic ring and the secondary seal, this principle is ideal for stock rationalization, this seals are comfortable to use in wide range of application as below:

Material of Construction:

Seal Faces: (Dynamic & Stationary Ring)

Carbon, Ceramic (99.5%), Silicon Carbide, Tungsten Carbide & which are suitable for fluid

Secondary Seal:

LPS-181-U: Viton, Silicon, Aflas, Kalrez


Hardware & Spring:

SS 316, SS 304, Carpenter-42, Alloy-20, Hastelloy – C


  • Slurry pumps
  • Food industries
  • Water treatment
  • Pulp & Paper industries
  • General & light chemicals

Seal Characteristics:

  • Unbalanced / Balanced
  • Single acting
  • Inside mounted
  • Independent of direction of rotation

Operating Parameter:

  • Shaft diameter : 16 mm to 66 mm (0.65” to 2.6”)
  • Pressure : Up to 10 bar (kg/cm²)
  • Temperature : -45 °C to 180 °C
  • Shaft Speed : Up to 3000 RPM

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