What is the Difference Between Mechanical Seal and Gland Packing?

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What is the Difference Between Mechanical Seal and Gland Packing?

Difference Between Mechanical Seal and Gland Packing

Here we describe the difference between mechanical seal and gland packing. With the development of technology, new and advanced sealing methods are getting introduced. The sealing technology is also evolving and improving every year. For many years, gland or packing seals have been the first choice. However, in recent years, mechanical seals are also being considered for operational benefits.

What are the key differences between these two types of seal seals?

Both gland packing and mechanical seals are effective and useful. It depends on economic viability, personal preference, and requirement specification; which one will be preferred? Here you know the difference between mechanical seal and gland packing.

Gland Packing Seals

As mentioned before, gland packing seals have been widely used for many years. These seals use rope-like material, which is wrapped around the shaft of the pump. It fills in dead space and minimizes fluid loss.

When the gland packing material wears out with age, fluid loss increases. It will result in impaired lubrication and reduced ease of replacement needed for proper functionality.

Mechanical Seals

They are preferred over traditional packing seals in diverse applications where leakage avoidance is crucial. These seals are more durable as compared to Gland Packing Seals. Also, they are designed to take more punishment. Since there are multiple sealing points to eliminate leakage issues, they are better than gland packing seals.

One sealing point stays fixed here, whereas, the other rotates with the shaft. As the lapped faces collapse, the fluid leakage is stopped by an O-ring, V-ring, or wedge.

When is a packing seal used?

Packing seals are typically the most economical choice for sealing solutions. It is the reason they are widely used. They are easier to install than mechanical seals. There is no need to decouple the driver shaft. Hence, you have a considerably shorter installation time as compared to other types of seals.

These seals can adapt to the conditions and maintain the integrity in pumps and agitators where a large amount of radial movement is there. In mining and ore processing, packing seals are an economic choice.

When is a Mechanical Seal used?

Mechanical seals are ideal when seal leakage is not an option for application or equipment. It is usually the case when pump leakage may cause safety hazards or environmental issues. These are more durable than packing seals. Hence, a better choice for long-term operation.

Though mechanical seals are costlier than packing seals, you save on the cost of constant packing seal repair and replacement. Mechanical seals minimize sleeve damage.

Both types of seals have pros and cons. It is important to check the sealing requirement before picking one. Based on the needs of the application, a suitable type of seal is selected.

Beston Seals is ISO certified company specializing in providing solutions to all types of leakages by manufacturing mechanical seals and sealing components as per customers’ drawings, samples, or requirements. We are one of the best rotary union and mechanical seal manufacturers in India based in Mumbai, Maharashtra. To know more about mechanical seals call on +91-9820007401 or email info@bestonseals.com.

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