V-RING VA 190 NBR 185-195 - Axial Shaft Seal

V-RING VA 190 NBR 185-195 mm - Axial Shaft Seal

V-RING VA 190 NBR is an elastomeric axial shaft seal designed for shaft diameters of 185-195 mm. The VA designation identifies the standard V-ring sealing profile, 190 specifies the nominal size, and NBR indicates nitrile butadiene rubber. The seal has nominal free-state dimensions of 171x187x14.5 mm. It rotates with the shaft, while its flexible sealing lip contacts a stationary axial counterface to protect mechanical assemblies against external contamination.

Technical Specifications - V-RING VA 190 NBR

The dimensions correspond to the standard VA 190 profile. Since the manufacturer of the specific product has not been identified, exact dimensional tolerances and permissible operating conditions should be confirmed against the manufacturer's technical documentation.

What Does V-RING VA 190 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 surface of the shaft.

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

This construction allows the V-ring to provide additional protection for bearing assemblies against external contamination.

VA - Sealing Profile

VA identifies a standard V-ring profile with a compact cross-section and a flexible axial sealing lip.

The profile is designed for direct installation onto the shaft.

Compared with the VS profile of the same nominal size, the VA design requires less axial installation space.

VA and VS profiles should not be considered automatically interchangeable.

190 - Nominal Seal Size

The number 190 identifies the nominal seal size.

The standard VA 190 V-ring is designed for shaft diameters of 185-195 mm.

However, the designation does not mean that the uninstalled seal has an inside diameter of 190 mm.

The actual free-state inside diameter is 171 mm.

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

NBR - Nitrile Butadiene Rubber

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

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

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

Construction and Operating Principle of V-RING VA 190 NBR

Elastomeric Seal Body

The seal body is manufactured from flexible nitrile rubber.

During installation onto a shaft with a diameter of 185-195 mm, the elastomer stretches.

The resulting elastic tension helps retain the seal on 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 conventional housing bore used for a radial shaft seal.

Rotation with the Shaft

The V-ring rotates together with the shaft.

Its sealing lip contacts a stationary component, such as the axial face of a bearing housing or cover.

Correct axial positioning is essential for maintaining appropriate sealing contact.

Additional Deflector Action

During rotation, the seal can also 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 190 NBR

The actual shaft diameter is the primary selection parameter.

Why Is the Free-State Inside Diameter 171 mm?

A V-ring is an elastic sealing component.

Its inside diameter before installation is smaller than the intended shaft diameter.

When the seal is installed, the elastomer stretches and conforms to the shaft surface.

This allows the seal body to rotate with the shaft.

Therefore, VA 190 should not be selected as if it were a rigid ring with a 190 mm bore.

Does V-RING VA 190 NBR Fit a 190 mm Shaft?

Yes.

A shaft diameter of 190 mm falls within the standard mounting range of 185-195 mm.

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

What Is the Recommended Installed Width?

The recommended installed axial width is 12 +/- 1.8 mm.

Correct positioning ensures that the sealing lip contacts the stationary counterface as intended.

Incorrect axial compression may cause excessive friction, accelerated wear or insufficient sealing performance.

V-RING VA 190 NBR vs Other Variants

VA 190 vs VA 180

VA 180 is designed for shaft diameters of 175-185 mm.

VA 190 covers shaft diameters of 185-195 mm.

Both profiles have a nominal free-state axial width of 14.5 mm, but their ring diameters differ.

They should not be considered automatically interchangeable.

VA 190 vs VA 199

VA 199 is designed for shaft diameters of 195-210 mm.

VA 190 covers the 185-195 mm range.

Selection at the boundary diameter of 195 mm should take the manufacturer's recommendations and installation requirements into account.

VA 190 vs VS 190

Both seals belong to the axial V-ring family.

The VS profile has a wider cross-section than VA.

Identical shaft diameter ranges do not establish complete interchangeability between VA and VS profiles.

VA 190 NBR vs VA 190 FKM

NBR and FKM are different elastomeric materials.

NBR is commonly used in standard industrial sealing applications.

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

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 190 NBR

• V-ring VA 190

• VA 190 NBR

• VA190 NBR

• V-RING VA190

• V-ring type A 190

• VA 190 axial shaft seal

• V-ring 190x171 NBR

These are alternative written forms and descriptive references, not confirmed OEM part numbers.

When replacing a seal from another manufacturer, the actual dimensions and elastomer material must be compared.

Typical Applications of V-RING VA 190 NBR

VA-profile 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 this seal design, not confirmed installations of the specific product in particular 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 mechanical assembly.

Dust Protection

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

Sealing performance 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 190 NBR

Before ordering, verify:

1. Complete designation V-RING VA 190 NBR.

2. VA sealing profile.

3. Shaft diameter of 185-195 mm.

4. NBR elastomer material.

5. Free-state inside diameter of 171 mm.

6. Free-state outside diameter of 187 mm.

7. Free-state axial width of 14.5 mm.

8. Recommended installed axial width of 12 +/- 1.8 mm.

9. Available installation space.

10. Counterface geometry.

11. Shaft rotational speed.

12. Operating temperature.

13. Material compatibility with the operating medium.

14. Type of external contamination.

15. Requirements of the complete sealing arrangement.

Are VA 190 V-Rings from Different Manufacturers Interchangeable?

Not always.

The profile geometry, dimensional tolerances, elastomer material and installation requirements must be compared.

An identical nominal designation does not automatically guarantee complete compatibility.

Installation and Operation of V-RING VA 190 NBR

Shaft Preparation

Clean the shaft before installation.

Remove burrs and sharp edges 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 counterface should be clean, properly prepared and free from damage.

Incorrect geometry can 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 190 NBR

What Shaft Diameter Is V-RING VA 190 NBR Designed For?

The standard VA 190 V-ring is designed for shaft diameters of 185-195 mm.

What Are the Dimensions of V-RING VA 190 NBR?

The nominal free-state dimensions are 171x187x14.5 mm. The cross-section height is 8 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 used in industrial seals because of its flexibility and resistance to many mineral oils and greases.

Does V-RING VA 190 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.

What Is the Difference Between VA 190 and VS 190?

Both profiles are designed for shafts measuring 185-195 mm, but their widths differ. VA 190 has a free-state axial width of 14.5 mm, compared with 20.5 mm for VS 190.

Can VA 190 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 installation requirements and may perform different functions.

Can VA 190 NBR Be Replaced with VA 190 FKM?

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

V-RING VA 190 NBR - Quick Technical Overview

V-RING VA 190 NBR is an elastomeric axial shaft seal designed for shaft diameters of 185-195 mm. The standard VA profile has nominal free-state dimensions of 171x187x14.5 mm. Manufactured from nitrile butadiene rubber, the seal rotates with the shaft while its flexible lip contacts a stationary axial counterface to protect mechanical assemblies against external contamination.

V-RING VA 190 NBR at simmering.pl

V-RING VA 190 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.