NBR Quad Ring

The NBR Quad Ring, also known as an X-Ring, is a four-lobed sealing element designed to provide superior sealing performance compared to traditional O-rings.

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Key Advantages of NBR X ring

Anti-Twisting Performance

The X-shaped profile prevents spiral failure and twisting during reciprocating or rotary movement.

Lower Friction

Reduced contact surface decreases friction compared to O-rings, especially in dynamic applications.

Better Sealing Stability

Two sealing lines improve leak prevention and pressure resistance.

Quad Ring vs O-Ring Comparison

Feature	NBR Quad Ring (X-Ring)	NBR O-Ring
Cross Section	Four-lobed (X-shaped)	Circular
Sealing Lines	Double sealing lines	Single sealing line
Anti-Twisting	Excellent	Moderate
Friction Level	Lower	Higher
Dynamic Applications	Highly suitable	Limited
Lubrication Retention	Excellent	Limited
Service Life	Longer	Standard
Cost	Slightly higher	Lower

Structure & Working Principle Of Quad Ring

With its unique four-lip geometry, the Quad Ring provides improved sealing stability, reduced friction

Two independent sealing lines per side

Reduced twisting and rolling in dynamic motion

Unlike standard O-rings with a circular cross-section, the Quad Ring features a four-lobed (X-shaped) cross-section.

Improved lubricant retention between the sealing lips

Lower contact surface area for reduced friction

FAQ

01/

Can Quad Rings replace O-rings directly?

Yes, in most groove designs for dynamic applications. However, groove dimensions should be checked for optimal performance.

02/

Are Quad Rings suitable for rotary applications?

Yes, they perform better than O-rings in low-speed rotary applications due to reduced twisting.

03/

What is the main advantage over O-rings?

The biggest advantage is anti-twisting performance and lower friction in dynamic systems.

04/

Do Quad Rings require backup rings?

For high-pressure applications, backup rings are recommended.

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