75x95x10 VMQ TC Silicone Double-Lip Radial Shaft Seal

75x95x10 VMQ TC - Technical Characteristics

The 75x95x10 VMQ TC is a radial shaft seal designed to seal the interface between a rotating shaft and a stationary housing.

The primary sealing lip maintains dynamic contact with the shaft surface and restricts leakage of the sealed medium. The auxiliary dust lip helps prevent external contaminants from reaching the primary sealing area.

This specific version is identified by three essential characteristics: 75x95x10 mm nominal dimensions, VMQ silicone rubber and TC double-lip construction.

Correct selection requires consideration of all three characteristics, rather than dimensional compatibility alone.

75x95x10 Oil Seal - Dimensions

The 75 mm inside diameter corresponds to the nominal diameter of the rotating shaft.

The 95 mm outside diameter corresponds to the nominal housing bore diameter.

The 10 mm width defines the axial dimension of the seal.

These nominal dimensions do not independently specify manufacturing tolerances, required shaft surface finish or permissible shaft misalignment.

What Does 75x95x10 VMQ TC Mean?

The product designation consists of the following elements:

75x95x10 - Nominal seal dimensions in millimetres, expressed as inside diameter, outside diameter and axial width.

VMQ - Technical designation for silicone rubber used as the sealing elastomer.

MVQ - Alternative commercial designation encountered for silicone rubber.

TC - Double-lip radial shaft seal profile incorporating a primary sealing lip and an auxiliary dust lip.

AO - Alternative profile designation used in certain European sealing catalogues for a comparable double-lip construction.

Although AO and TC may describe similar sealing arrangements, the designations do not automatically guarantee identical geometry across different manufacturers.

TC Double-Lip Construction

The TC profile incorporates two sealing lips with different functions.

Primary sealing lip

The primary lip forms the dynamic sealing contact with the rotating shaft. Its function is to restrict leakage of the sealed medium from the housing.

Auxiliary dust lip

The additional lip is positioned towards the external side of the sealing arrangement. It helps limit the entry of dust and other contaminants into the primary sealing area.

Many conventional radial shaft seals use a garter spring to maintain contact pressure at the primary sealing lip. However, the exact spring arrangement, metal reinforcement and outside surface construction of this specific product require confirmation from the manufacturer's technical documentation.

The TC designation alone does not confirm a directional hydrodynamic lip design or a particular shaft rotation direction.

VMQ / MVQ Silicone Rubber Material

VMQ is the technical designation for silicone rubber used in industrial sealing applications. MVQ is also encountered as an alternative commercial designation.

Silicone rubber has material characteristics that differ from those of nitrile rubber (NBR) and fluorocarbon rubber (FKM).

General properties associated with VMQ elastomers include low-temperature flexibility and resistance to ozone and atmospheric ageing.

However, the operating temperature range, chemical compatibility, mechanical properties and service life of a finished seal depend on the specific silicone compound.

Therefore, the exact operating limits of this 75x95x10 VMQ TC seal cannot be established from the material designation alone.

In particular, VMQ does not automatically confirm food-contact approval or compatibility with every oil, fuel or solvent.

How the Radial Shaft Seal Works

During operation, the primary sealing lip remains in contact with the rotating shaft surface.

Under suitable conditions, a very thin lubricating film may develop at the contact interface. This film influences friction, wear and sealing performance.

The behaviour of the sealing system depends on several interacting factors:

• Sealing lip geometry

• Elastomer properties

• Shaft surface condition

• Shaft concentricity and alignment

• Lubrication conditions

• Rotational speed

• Operating temperature and pressure

The auxiliary dust lip provides an additional barrier against external contamination but does not replace the primary sealing lip.

Its presence does not automatically establish a particular IP protection rating or suitability for continuous water immersion.

75x95x10 VMQ TC vs 75x95x10 VMQ SC

Radial shaft seals with identical nominal dimensions may have different sealing profiles.

The main constructional difference is the additional auxiliary dust lip in the TC profile.

A single-lip SC seal is not automatically interchangeable with a double-lip TC seal, even when the nominal dimensions are identical.

The appropriate profile must be selected according to the original equipment requirements and operating conditions.

Selection and Interchangeability

Before selecting a replacement for the 75x95x10 VMQ TC oil seal, verify:

1. Nominal shaft diameter: 75 mm.

2. Nominal housing bore diameter: 95 mm.

3. Axial seal width: 10 mm.

4. Sealing material: VMQ silicone rubber.

5. Sealing profile: TC double lip.

6. Requirement for an auxiliary dust lip.

7. Outside surface geometry and housing fit.

8. Operating medium and material compatibility.

9. Shaft speed, temperature and pressure requirements.

10. Any directional sealing features required by the original design.

A 75x95x10 NBR TC oil seal is not automatically equivalent to a 75x95x10 VMQ TC seal.

Although both products may have the same nominal dimensions and similar lip geometry, NBR and VMQ have different chemical, mechanical and thermal properties.

Likewise, matching dimensions do not establish interchangeability between TC and SC sealing profiles.

Installation and Operating Considerations

Before installation, inspect the housing bore and shaft surface for contamination, burrs, scratches or other damage.

The shaft surface must be suitable for contact with a radial sealing lip.

Install the seal squarely into the housing using an appropriate fitting tool that applies force to the correct structural area without deforming the sealing lips.

Avoid damaging the primary lip when passing the seal over shaft edges, grooves or splines.

Lubrication during installation must be compatible with the elastomer and the operating medium.

The primary sealing lip should be oriented towards the medium being retained, unless the specific equipment design requires otherwise.

Store the seal in a clean environment, protected from mechanical deformation and unsuitable storage conditions.

Technical Specification

FAQ - 75x95x10 VMQ TC Silicone Oil Seal

1. What are the dimensions of the 75x95x10 VMQ TC oil seal?

The nominal inside diameter is 75 mm, outside diameter is 95 mm and axial width is 10 mm.

2. What does VMQ mean in the oil seal designation?

VMQ identifies silicone rubber. MVQ is also used as an alternative commercial designation for this elastomer family.

3. What does TC mean in a radial shaft seal?

TC commonly identifies a double-lip radial shaft seal with a primary sealing lip and an additional auxiliary dust lip.

4. Does the 75x95x10 VMQ TC seal have a dust lip?

Yes. The auxiliary dust lip is a defining feature of the specified double-lip construction.

5. Can a silicone VMQ oil seal be replaced with an NBR seal?

Not without verifying the operating conditions. VMQ and NBR have different material properties, so matching dimensions do not guarantee interchangeability.

6. Does TC indicate a right-hand rotation seal?

No. The TC designation alone does not identify a right-hand or left-hand directional sealing feature.

7. What is the operating temperature range of a 75x95x10 VMQ seal?

The permissible temperature range depends on the specific silicone compound and must be confirmed from the product's material documentation.

8. Can a 75x95x10 TC seal be replaced with a single-lip SC seal?

Not automatically. The SC profile lacks the auxiliary dust lip, so substitution requires an assessment of the original sealing arrangement and operating conditions.

75x95x10 VMQ TC - Key Product Information

75x95x10 VMQ TC is a double-lip silicone radial shaft seal with a nominal inside diameter of 75 mm, outside diameter of 95 mm and axial width of 10 mm. Manufactured from VMQ silicone rubber, also designated MVQ, it features a primary sealing lip and an auxiliary dust lip. The TC profile is also commonly designated AO in certain European sealing systems.