V-RING VA 100 NBR 98-105 mm - Axial Shaft Seal

V-RING VA 100 NBR 98-105 mm - Axial Rotary Shaft Seal

V-RING VA 100 NBR is an elastomeric axial shaft seal designed for shaft diameters of 98-105 mm. The VA designation identifies the standard V-ring sealing profile, 100 indicates the nominal size, and NBR specifies nitrile butadiene rubber. The seal has a nominal free-state inside diameter of 90 mm, a cross-section height of 6 mm and a free-state axial width of 11 mm. It rotates with the shaft and helps protect mechanical assemblies against external contamination.

Technical Specifications - V-RING VA 100 NBR

The dimensional values correspond to the standard VA 100 profile. The manufacturer of the supplied product has not been specified. For applications requiring precise dimensional tolerances, the actual seal dimensions and operating limits should be confirmed against the relevant manufacturer's technical documentation.

What Does V-RING VA 100 NBR Mean?

V-RING - Axial Shaft Seal

A V-ring is a flexible elastomeric sealing ring installed directly onto a rotating shaft.

Unlike a conventional radial shaft oil seal, its sealing lip does not operate against the cylindrical shaft surface.

Instead, sealing contact takes place against a stationary axial surface perpendicular to the shaft axis.

This construction allows the V-ring to provide additional protection for bearings and other mechanical assemblies against external contamination.

VA - Standard V-Ring Profile

VA identifies the standard axial V-ring sealing profile.

The seal consists of a flexible elastomeric body and an integral sealing lip.

Its construction allows direct installation onto the shaft without requiring the conventional housing bore used for a radial shaft oil seal.

The VA profile must be distinguished from VS and other V-ring designs because their cross-sectional geometries and installation requirements may differ.

100 - Nominal Seal Size

The number 100 identifies the nominal seal size.

The standard VA 100 V-ring is designed for shaft diameters of 98-105 mm.

However, this designation does not mean that the uninstalled seal has an inside diameter of 100 mm.

The nominal free-state inside diameter is 90 mm.

This smaller diameter allows the elastomeric body to stretch during installation and grip the shaft through elastic tension.

NBR - Nitrile Butadiene Rubber

NBR is a synthetic elastomer commonly used in industrial sealing applications.

It provides flexibility and resistance to many mineral oils and greases.

Actual chemical and temperature resistance depend on the specific NBR compound.

Material selection should take the operating medium, temperature and application conditions into account.

Construction and Operating Principle of V-RING VA 100 NBR

Elastomeric Seal Body

The seal body is manufactured from nitrile butadiene rubber.

Its nominal free-state inside diameter is 90 mm.

During installation onto a shaft with a diameter of 98-105 mm, the elastomer stretches.

The resulting elastic tension helps retain the seal on the shaft and allows it to rotate with the shaft during operation.

Flexible Sealing Lip

The sealing lip is an integral part of the elastomeric body.

When correctly installed, it contacts a stationary axial counterface.

This contact helps restrict the entry of dust, moisture and other contaminants into the protected mechanical assembly.

Axial Sealing Principle

The sealing lip operates against a surface perpendicular to the shaft axis.

This is the fundamental difference between a V-ring and a conventional radial shaft oil seal.

A V-ring does not require the standard housing bore used for radial shaft seals.

Rotation with the Shaft

The seal rotates together with the shaft.

Its sealing lip contacts a stationary component, such as the axial face of a bearing housing, cover or another appropriately prepared mechanical surface.

Correct axial positioning is important for sealing performance and lip service life.

Additional Deflector Action

During rotation, a V-ring can help deflect water and contaminants away from the sealing area.

This action supplements the contact sealing function.

However, a standard V-ring should not be considered suitable for arbitrary liquid pressure conditions.

Dimensions and Selection of V-RING VA 100 NBR

The actual shaft diameter is the primary selection parameter.

Why Is the Inside Diameter of VA 100 Only 90 mm?

A V-ring is an elastic sealing component installed directly onto the shaft.

Its free-state inside diameter is smaller than the intended shaft diameter.

During installation, the elastomeric body stretches and conforms to the shaft surface.

This allows the seal to remain positioned on the shaft and rotate with it.

Therefore, VA 100 should not be selected as if it were a rigid ring with a 100 mm bore.

Does V-RING VA 100 NBR Fit a 100 mm Shaft?

Yes.

A shaft diameter of 100 mm falls within the standard mounting range of 98-105 mm.

The available axial installation space, counterface geometry and operating conditions must also be checked.

What Is the Recommended Installed Width?

The recommended installed axial width is 9 +/- 1.2 mm.

This dimension is important for achieving correct contact between the sealing lip and the stationary axial counterface.

Incorrect axial compression may increase friction, accelerate wear or reduce sealing effectiveness.

What Counterface Dimensions Are Required?

For the standard VA 100 profile, the following dimensional relationships apply:

• Maximum counterface inside diameter: shaft diameter + 3 mm.

• Minimum counterface outside diameter: shaft diameter + 18 mm.

For a shaft diameter of 100 mm, this corresponds to:

• Maximum counterface inside diameter: 103 mm.

• Minimum counterface outside diameter: 118 mm.

The counterface should be appropriately prepared and free from damage that could accelerate sealing lip wear.

V-RING VA 100 NBR vs Other Variants

VA 100 vs VA 95

The standard VA 95 is designed for shaft diameters of 93-98 mm.

VA 100 covers the range of 98-105 mm.

Despite their similar construction, the two seals have different free-state inside diameters.

They should not be considered automatically interchangeable.

VA 100 vs VA 110

The standard VA 110 is designed for shaft diameters of 105-115 mm.

VA 100 covers the range of 98-105 mm.

Selecting the correct size requires checking the actual shaft diameter and the manufacturer's recommendations, particularly at the boundaries of the mounting ranges.

VA 100 vs VS Profile

VA and VS are different axial V-ring sealing profiles.

The VS profile has a different cross-sectional geometry and may require more axial installation space.

Replacing a VA profile with a VS design requires verification of the mounting dimensions and counterface geometry.

VA 100 NBR vs VA 100 FKM

NBR and FKM are different elastomeric materials.

NBR is commonly used in standard industrial applications involving compatible mineral oils and greases.

FKM may be suitable for selected applications requiring different chemical or temperature resistance.

Material substitution requires verification of operating conditions and dimensional compatibility.

Alternative Designations and Search References

The product may be encountered under the following written forms:

• V-RING VA 100 NBR

• V-ring VA 100

• VA 100 NBR

• VA100 NBR

• V-RING VA100

• V-ring type A 100

• VA 100 axial shaft seal

• V-ring 100 NBR seal ring

These are natural written variations and descriptive references.

They are not confirmed OEM part numbers and do not establish complete interchangeability between products from different manufacturers.

Typical Applications of V-RING VA 100 NBR

VA-type axial V-rings are used in mechanical assemblies requiring protection against external contamination.

Typical applications based on the seal construction include:

• Protection of rolling bearings against dust and moisture.

• Additional sealing of bearing housings.

• Industrial rotating shafts.

• Mechanical drive assemblies.

• Rotating machinery components.

• Equipment operating in dusty environments.

• Assemblies exposed to water and grease splashes.

These are typical applications of the V-ring sealing design, not confirmed installations of this particular product in specific machine models.

Rolling Bearing Protection

A V-ring can provide an additional barrier against contaminants entering the bearing area.

It may operate together with other sealing components within the assembly.

Dust Protection

The flexible sealing lip helps restrict the entry of dust and fine contaminants.

Its effectiveness depends on correct installation and the condition of the axial counterface.

Moisture Protection

A V-ring can help reduce the ingress of moisture and water splashes.

However, it should not be treated as a universal pressure seal.

Selection and Interchangeability of V-RING VA 100 NBR

Before ordering, verify:

1. Complete designation V-RING VA 100 NBR.

2. VA sealing profile.

3. Shaft diameter within 98-105 mm.

4. NBR elastomer material.

5. Free-state inside diameter of 90 mm.

6. Cross-section height of 6 mm.

7. Free-state axial width of 11 mm.

8. Recommended installed axial width of 9 +/- 1.2 mm.

9. Available installation space.

10. Counterface dimensions and surface condition.

11. Shaft rotational speed.

12. Operating temperature.

13. Chemical compatibility between NBR and the operating medium.

14. Type of external contamination.

15. Requirements of the complete sealing arrangement.

Are VA 100 V-Rings from Different Manufacturers Interchangeable?

Not always.

Profile geometry, dimensional tolerances, elastomer compounds and installation requirements must be compared.

An identical nominal designation does not guarantee complete technical compatibility.

Can VA 100 Replace a Conventional Radial Shaft Oil Seal?

Not automatically.

A V-ring provides axial sealing, while a conventional radial shaft oil seal provides radial sealing.

The two designs have different operating principles and installation requirements.

A V-ring often provides additional protection against contamination rather than serving as a direct replacement for a primary radial shaft oil seal.

Installation and Operation of V-RING VA 100 NBR

Shaft Preparation

Clean the shaft thoroughly before installation.

Remove burrs, sharp edges and contaminants that could damage the elastomer.

Installing the Seal

Stretch the V-ring evenly and slide it onto the shaft.

Avoid twisting the seal body or damaging the flexible sealing lip.

Axial Positioning

The sealing lip must face the stationary axial counterface.

Maintain the recommended installed axial width.

Counterface Condition

The stationary axial counterface should be clean, appropriately prepared and free from damage.

Incorrect geometry may accelerate sealing lip wear.

Operating Conditions

Before starting the machine, verify rotational speed, operating temperature and compatibility between NBR and the operating medium.

Permissible operating conditions depend on the specific elastomer compound and the complete sealing arrangement.

Storage

Store the seal in a clean, dry environment, protected from direct sunlight, excessive heat and substances that may damage the elastomer.

Frequently Asked Questions - V-RING VA 100 NBR

What Shaft Diameter Is V-RING VA 100 NBR Designed For?

The standard VA 100 V-ring is designed for shaft diameters of 98-105 mm.

What Are the Dimensions of V-RING VA 100 NBR?

The free-state inside diameter is 90 mm, the cross-section height is 6 mm, and the free-state axial width is 11 mm. The recommended installed axial width is 9 +/- 1.2 mm.

What Does VA Mean in a V-Ring Designation?

VA identifies the standard axial V-ring profile with a flexible sealing lip that contacts a stationary axial counterface.

What Does NBR Mean?

NBR stands for nitrile butadiene rubber, an elastomer commonly used in industrial seals because of its flexibility and resistance to many mineral oils and greases.

Does V-RING VA 100 NBR Rotate with the Shaft?

Yes. The seal body is mounted directly onto the shaft and rotates with it, while the flexible sealing lip contacts a stationary axial counterface.

Does VA 100 Fit a 100 mm Shaft?

Yes. A 100 mm shaft diameter falls within the standard mounting range of 98-105 mm. The available axial installation space and counterface requirements must also be checked.

Can a VA 100 V-Ring Replace a Conventional Oil Seal?

Not automatically. A V-ring provides axial sealing, whereas a conventional radial shaft oil seal provides radial sealing. The designs have different installation requirements and may perform different functions.

Can VA 100 NBR Be Replaced with VA 100 FKM?

Only after confirming dimensional compatibility and operating requirements. NBR and FKM differ in their chemical and temperature resistance characteristics.

V-RING VA 100 NBR - Quick Technical Overview

V-RING VA 100 NBR is an elastomeric axial shaft seal designed for shaft diameters of 98-105 mm. The standard VA profile has a 90 mm free-state inside diameter, a 6 mm cross-section height and an 11 mm free-state axial width. Manufactured from nitrile butadiene rubber, the seal rotates with the shaft while its flexible lip protects the assembly against external contamination.

V-RING VA 100 NBR at simmering.pl

V-RING VA 100 NBR is available to order from simmering.pl, a specialist supplier of industrial seals, V-rings, rotary shaft oil seals, O-rings and rolling bearings.

We serve manufacturing companies, maintenance departments, machinery service providers and B2B customers.

Our warehouse and order processing operations are located in Lublin, Poland.

We supply customers throughout Europe and offer worldwide shipping.

We assist customers in identifying industrial seals by profile, dimensions, material and operating requirements.