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Single Spring Balance Unbalance Seal U71 Series

SKU ABGNV Category Mechanical Seals Brand ESPL Condition New

Specifications

Pressure Unbalance 10 Bar (kg/cm 2) & Balance upto 35 bar (kg/cm 2)
Temperature -60 C to 260 C
Shaft Diameter 12 mm To 100 mm
Shaft Speed Upto 6000 RPM According To Shaft Size & Pressure.
Hardware SS 316 SS 304 Hast - C Monel Alloy -20.
Face Material (Dynamic Ring & Stationary Ring ) Carbon Ceramic (99.5%). Silicon Carbide Tungsten Carbide Chrome Cast Steel & Which Are Suitable For Fluid.
(Secondary Seal) Viton EPDM Silicon Aflas EPR Kalrez TCV

Key Features

  • High Durability
  • High performance

Product Description

U71 Series of Seals are Single Helical Coil Spring Seals  Developed for Dirty Media & Clogging type applications. Torque Transmission from Retainer Shell to Dynamic Ring is done through Drive Lugs. All components are held together by a Snap Ring which helps in Easier Installation & Removal. As all Parts are  Interchangeable one can convert series  U71  by changing only the  Dynamic  Ring and the Secondary Seal. This Principle is ideal for Stock Rationalisation.Seal CharacteristicsInside MountedSingle ActingUnbalanced & BalancedIndependent Of the Direction Of RotationApplication Light Hydrocarbon, Dirty, Media. Petrochemicals Petroleum Refinery General Chemicals
Single Spring Balance Unbalance Seal U71 Series
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Frequently Asked Questions

The U71 Series seals have an unbalance pressure rating of 10 Bar (kg/cm²) and a balance pressure rating of up to 35 Bar (kg/cm²).

This model can operate within a temperature range of -60°C to 260°C.

The maximum shaft speed for the U71 Series seals is up to 6000 RPM, depending on the shaft size and pressure.

The face materials for the dynamic and stationary rings include carbon ceramic (99.5%), silicon carbide, tungsten carbide, and chrome cast steel, all suitable for fluid applications.

The secondary seals can be made from Viton, EPDM, silicon, Aflas, EPR, Kalrez, or TCV materials.

The U71 Series seals are suitable for light hydrocarbons, dirty media, petrochemicals, petroleum refining, and general chemicals.

All components are held together by a snap ring, which facilitates easier installation and removal.

Yes, the U71 Series can be converted by changing only the dynamic ring and the secondary seal, as all parts are interchangeable.

The hardware for the U71 Series seals is made from SS 316, SS 304, Hast-C, and Monel Alloy -20.

Yes, the U71 Series seals are designed for both unbalanced and balanced applications, independent of the direction of rotation.

The design principle involves torque transmission from the retainer shell to the dynamic ring through drive lugs, making it ideal for stock rationalization.

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