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Conical Single Spring Unbalance Seals

Conical Mechanical Seal - we are biggest Exporter, Manufacturer, and Supplier of Conical Spring Mechanical Seal supplier in India.

Series : U3

We offer the U3 series of

conical single spring unbalance seals

The seal contains the secondary seal, the ‘o’ ring. The face materials and elastomers can be varied as per requirement of the application. The conical helical springs transmits the torque. The seals depend on the direction of the rotation. The conical helical spring can be fitted easily by pushing on the shaft and twisting as the spring winding. So, the spring diameter enlarges easily to make easy fitting. One can judge the direction of the rotation from the drive end of the shaft.

The clockwise rotating shaft requires the right handed spring and anti-clockwise rotating shaft requires left handed spring.

The conical single spring unbalance seals are used in central heating system in circulation pumps. It’s also used in the chemical process pumps, sewage and submersible pumps and chemical process pumps.


Globe Star Standard Style

  • Face Materials : (Dynamic Ring & Stationary Ring ) Carbon, Ceramic (99.5%). Silicon Carbide, Tungsten Carbide, Chrome Cast Steel & Which Are Suitable For Fluid.
  • Elastomer : (Secondary Seal) Viton, EPDM, Silicon, Aflas, PTFE, GFT & Grafoil, Kalrez, FEP, TCV
  • Hardware : SS 316, SS 304, Hast - C, Monel, Alloy -20.


  • Circulation Pumps For Central Heating.
  • Water Pumps
  • Sewage & Submersible Pumps
  • Chemical Process Pumps

Operating Limits

  • Shaft Diameter : (10 mm to 100 mm) (0.5" to 4.0")
  • Pressure : 10 Bar (kg/cm 2)
  • Temperature : -60°c to 180°c
  • Shaft Speed : Upto 6000 RPM According to Shaft Size & Pressure.

Seal Characteristics

  • Inside Mounted
  • Single Acting
  • unbalanced
  • Dependent Of Direction Of Rotation

Other Available Single Conical Spring Seal