VA 80 V-Ring 72x6x11 NBR Rotary Axial Seal

What is the VA 80 V-Ring?

The VA 80 V-Ring 72x6x11 is a flexible axial rotary shaft seal manufactured from NBR (Nitrile Butadiene Rubber). Unlike conventional radial shaft oil seals, a V-Ring rotates together with the shaft while its flexible sealing lip maintains axial contact with a stationary counterface. This design effectively prevents dust, dirt, water, mud and other contaminants from entering bearings and rotating equipment while helping retain lubricant inside the assembly.

With dimensions of 72 × 6 × 11 mm, the VA 80 V-Ring is widely used in electric motors, pumps, gearboxes, agricultural machinery, industrial drives and many OEM applications requiring reliable environmental sealing.

Design and Construction

The VA Series V-Ring features a one-piece flexible elastomer construction that combines excellent sealing efficiency with simple installation.

Key construction features include:

• VA profile
• One-piece sealing element
• Flexible axial sealing lip
• NBR (Nitrile Butadiene Rubber)
• Excellent elasticity
• Self-retaining design
• Suitable for rotating shafts

The seal is installed directly onto the shaft and rotates together with it, while the sealing lip runs against a stationary surface.

Technical Specification

Manufacturer: GRN

Product Type: V-Ring Rotary Axial Seal

Profile: VA 80

Material: NBR (Nitrile Butadiene Rubber)

Nominal Shaft Diameter: 80 mm

Dimensions: 72 × 6 × 11 mm

Colour: Black

Lip Type: Axial sealing lip

Installation: Shaft mounted

How Does a V-Ring Work?

A V-Ring provides sealing by rotating together with the shaft while maintaining constant axial contact between its flexible sealing lip and a stationary counterface.

During operation, the elastic lip creates a light but continuous sealing force that effectively excludes contaminants such as:

• Dust
• Water
• Mud
• Sand
• Moisture
• Industrial debris

Because the sealing lip generates very low friction, V-Rings provide excellent service life while minimizing wear on the counterface.

Why Choose NBR?

NBR (Nitrile Butadiene Rubber) is the most widely used elastomer for industrial rotary sealing applications.

Its main advantages include:

• Excellent resistance to mineral oils
• Good grease compatibility
• High abrasion resistance
• Good mechanical strength
• Excellent elasticity
• Reliable long-term performance
• Cost-effective sealing solution

These properties make NBR the preferred material for standard industrial operating conditions.

Selecting the Correct V-Ring

Proper V-Ring selection should consider:

• Shaft diameter
• Profile type
• Material
• Operating temperature
• Rotational speed
• Environmental conditions
• Presence of contaminants
• Counterface design

Correct sizing ensures optimum sealing performance and long service life.

Installation Recommendations

For reliable operation:

• Clean the shaft before installation.
• Inspect the counterface for damage.
• Stretch the V-Ring evenly during assembly.
• Avoid twisting the sealing lip.
• Ensure correct axial positioning.
• Verify free shaft rotation after installation.

Proper installation helps maximize seal performance and equipment reliability.

Common Causes of Seal Failure

Typical causes include:

• Incorrect shaft size
• Wrong material selection
• Improper installation
• Excessive shaft speed
• Chemical incompatibility
• Damaged counterface
• Excessive heat
• Mechanical damage

Correct engineering practice significantly extends seal life.

Industrial Applications

The VA 80 V-Ring 72x6x11 NBR is commonly used in:

• Electric motors
• Gearboxes
• Industrial pumps
• Bearing housings
• Conveyor systems
• Agricultural machinery
• Construction equipment
• Industrial fans
• Mining equipment
• OEM machinery
• Industrial MRO maintenance

OEM and Industrial Maintenance

V-Rings are widely used as secondary protective seals that significantly extend bearing and oil seal life.

They help:

• Prevent contamination
• Extend bearing service life
• Reduce maintenance costs
• Improve equipment reliability
• Reduce unexpected downtime
• Support predictive maintenance programs

Their simple design and easy installation make them an economical solution for both OEM production and industrial servicing.

Why Engineers Choose VA Series V-Rings

• Reliable protection against contaminants
• Simple one-piece construction
• Excellent elasticity
• Low friction operation
• Easy installation
• Long service life
• Suitable for OEM and industrial maintenance
• Cost-effective shaft sealing solution

Frequently Asked Questions (FAQ)

What is a V-Ring used for?

A V-Ring protects bearings and rotating equipment against dust, water, mud and other contaminants while helping retain lubricants.

What does VA 80 mean?

VA identifies the standard V-Ring profile, while 80 indicates the nominal shaft diameter for which the seal is designed.

Is NBR resistant to oil?

Yes. NBR offers excellent resistance to mineral oils, lubricating greases and many petroleum-based fluids.

Does the V-Ring rotate with the shaft?

Yes. Unlike radial oil seals, the V-Ring rotates together with the shaft while its sealing lip contacts a stationary counterface.

Can a V-Ring replace a radial shaft oil seal?

Not always. V-Rings are primarily designed as axial exclusion seals and are often used together with radial shaft oil seals to improve overall sealing performance.

Where are VA V-Rings commonly installed?

They are widely used on electric motors, pumps, gearboxes, conveyors, agricultural machinery, industrial equipment and OEM applications.