Dry Gas Seal vs Mechanical Seal: Key Differences Explained

Difference Between Dry Gas Seal and Mechanical Seal: Key Design and Operational Distinctions

The Difference Between Dry Gas Seal and Mechanical Seal primarily lies in their lubrication mechanisms: dry gas seals utilize a non-contacting gas film, while traditional mechanical seals typically rely on a liquid-based lubricating film on the seal faces. Thus, traditional mechanical seals and dry gas seals differ in their design, method of operation, and intended use. The different designs of traditional mechanical and dry gas seals affect their reliability, ability to control leakage, maintenance requirements, and the type of configuration required to incorporate into existing systems.

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Advantages of Difference Between Dry Gas Seal and Mechanical Seal

Low Contamination

There is no liquid barrier fluid in this type of seal; therefore there is less chance of contamination.

High-Speed Suitability

This type of seal allows for the use of high rotational speeds due to usage of a gas as the film between parts to eliminate the possibility of contact.

Pressure Balance Seal Reliability

By maintaining a pressure balance at the sealing faces, the reliability of the seals is improved.

Application Scenarios

Technical Training and Documentation

Educational and Technical manuals for explanation of sealing systems.

Specification and Equipment Selection

To assist Engineering teams with their project planning for comparison of dry gas seals with other sealing technologies.

Maintenance and Diagnostics Procedures

Used by service personnel to examine the relationships of the operating conditions with the behavior of seals.

System Engineering and Design

To aid in determining the appropriate type of sealing technology for a particular type of compressor application.

FAQ

Why does the seal gas need to be clean/dry?

Any contaminants present in the seal gas will create problems with failure of the sealing surfaces and the creation of the necessary gas film for sealing.

How is a dry gas seal different from a mechanical seal?

A mechanical seal relies on the use of liquid to lubricate the sealing surfaces, while a dry gas seal utilises a gas film for separation.

Why is operating a dry gas seal in a non-contact fashion important?

Operating in a non-contact mode will significantly reduce the heat and friction generated between the sealing surfaces, resulting in more extended service intervals.

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What Our Customers Say

John

“There are many operational advantages dry gas seals have over contact seals in high-speed applications.“

Alen

”Increased efficiency and reduced maintenance are benefits of dry gas seals.”

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Why Choose Us

Jiangsu Golden Eagle Fluid Machinery Co. Ltd. is a leading global manufacturer of fluid sealing products, and one of China's earliest companies to engage in the mechanical seal industry. We have more than 50 years of manufacturing experience and full capability to supply our customers with a wide range of sealed products.

Jiangsu Golden Eagle's engineering team also provides complete engineering support from the initial design through the final installation, to ensure every customer has an efficient, secure, and easy-to-use sealing system.