A Beginners Guide to Mechanical Seals

Good to see your interest in mechanical seals, we have come up with an article for clearing your queries regarding it, and hope you enjoy reading.!

What is Mechanical Seal?

Mechanical seals are primarily used for leakage control devices, which are seen on rotating equipment such as pumps and mixer stoppers. Ideal for prevention of leakage in liquids and gasses from escaping into the environment. A mechanical seal consists of two principal components of the stationary ring and stationary elements, the stationary ring is used to seal non-moving pump components and the secondary seal as in stationary elements rotates against the shaft to achieve a seal.

Working Of Mechanical Seal

Mechanical Seal is a sum of mechanical engineering and physical property technology. Dive deep down, it has a tribology core of friction, wear, and friction-reducing. It helps to keep control of the surfaces where the stationary and rotary rings rub (slide) against each other. Its improved functionality doesn’t benefit with only handling leak prevention of liquid and gas from outside but also enhances machine operating efficiency, it also contributes to energy conservation and pollution prevention. These functions and roles make mechanical seals important and in-demand parts in the mechanical industries.

Types Of Mechanical Seals

Balanced seals

Refers to applicants whose forces acting at seal faces are balanced, it is used typically above 200 PSIG. Good choice for handling liquids with low lubricity and higher volatility.

Unbalanced seals

Used more as an economical option due to complexity in balance seal, it has tighter control on leakage face films but is not recommended for most hydrocarbon applicants or high-pressure machinery

Pusher seals

One or multiple seal closing forces are used in pusher seals. Ideal for high or untidy applications can provide sealing at high pressures but due to the elastomer behind the primary seal face might wear down as the face travels along the shaft/sleeve during operation

Non-pusher seals

It requires metal or elastomeric bellows to maintain seal closing forces, limited to lower to medium pressure applications

Conventional seals

Conventional seals often get installed on general service equipment and are usually lower in cost. As these seals get fitted as independent components, they need more operator expertise to service.

Cartridge Type Seals

Mechanical seals in the cartridge type combine all of the seal parts into a single assembly. This drastically minimizes the chances of an assembly error and the time it takes to adjust seals.

What does a mechanical seal do?

Mechanical seals are manufactured to deter a machine’s working fluid (water or oil) from leaking into the surrounding environment. Mechanical seals help to avoid environmental pollution, energy savings, and machine safety by improving machine operating efficiency and safety.

Why are mechanical seals important?

Because mechanical seals benefits multiple industries with its following features:

  • Can handle wide range of corrosive fluids
  • Prevent leakage
  • Long working life
  • Huge speed trips
  • Low power consumption

Properties of Mechanical Seals

  • Temperature constraints
  • Chemical resistance properties
  • Thermal expansion and conductivity properties
  • Low leakage And friction properties
  • Excellent thermal properties
  • Corrosion-resistant

Applications Of Mechanical Seal

  • Automobiles industry
  • Ships
  • Rockets
  • Industrial plant equipment
  • Residential devices


Popular Pump Seals is a leading manufacturer of mechanical seals, suitable sealing methods that make it useful for many industries. It doesn’t just improve the applicant device but also sounds useful because of its environmentally friendly and low power consumption that benefits with less waste, reduction of pump failures, and easy maintenance components. In short an ideal creation to drive your pump process smoothly without any hassle and also with health and environment benefits association.

To upgrade your applications with mechanical seals, or request a quote reach us at: sales@popularpumpseals.com

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