Pusher vs Non-Pusher Mechanical Seals: Key Differences & Selection Guide

High-Quality Pusher and Non Pusher Seal Structures and Their Functional Differences

The design of pusher and non pusher sealing devices that allow for an axial movement by the Seals' movement will determine if it is constructed to achieve axial movement through the use of a secondary dynamic seal or a main dynamic seal . As a result of these differences in materials and designs, there will be a difference in the seal's ability to accommodate variations in temperature or axial shaft movement. Consequently, the determining factor in selecting the type of sealing device will be based on the level of operational stability and the need for maintenance.

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Advantages of Pusher And Non Pusher Seal

Reduced Wear on Secondary Seal

Bellows Design Eliminates Sliding Elastomer Components In Contact With Shaft.

Axial Movement Compensation

Allows For Axial Movement And Thermal Movement Of The Shaft.

Clean Structural Design

Simplifies Sealing In Certain Applications.

Application Pusher And Non Pusher Seal

Component Type Mechanical Seal Including Pusher And Non-Pusher Seals Are Widely Used In Pumping Of Clean And Mildly Aggressive Fluids. Bellows Based Structures Are Commonly Selected For Chemical Processing, Light Industrial Pumping And Equipment Where Axial Flexibility Or Thermal Adaptation Is A Requirement For Stable Sealing With Minimal Movement Of The Shaft.

FAQ

What is a Non-Pusher Seal?

A Non-Pusher Seal Utilises Bellows Element As An Alternative To Dynamic Sealing Elements Secured With Secondary Seals.

Why Choose Bellows Type Design?

Bellows Type Design Provides Less Sensitivity To Axial Movement, Temperature Change.

Can Bellows Type Seal(s) Be Used In Standard Pump(s)?

Yes, Bellows Type Seals Are Ideal For Heating Applications Or Other Stable Operating Conditions.

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International Bio-Fermentation Exhibition

Discover how Jiangsu Golden Eagle showcased cutting-edge fluid machinery at the 2025 Jinan Bio-Fermentation Exhibition, driving innovation and industry collaboration. Learn more about our solutions.

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Precise Collaboration, Navigating New Frontiers

How cross-departmental teamwork drove success in a high-stakes mechanical seal project. Discover our proven process for on-time, precision delivery. Learn more now.

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The 9th China (Zibo) Chemical Technology and Equipment Exhibition

Discover how Golden Eagle showcased cutting-edge chemical technology solutions at Zibo's premier industry event, earning acclaim and new partnerships. Learn more about our innovations in chemical, power, and petroleum sectors.

What Our Customers Say

Paul D

"Bellows Type Seals Experienced Excellent Performance In Continuous Operation."

Emily R

"The Predictable Maintenance Requirements Were Fewer."

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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.