Silicone VMQ Rotary Shaft Seal 85x100x13 TC Oil Seal Double Lip

GRN 85x100x13 VMQ TC Double-Lip Silicone Oil Seal

GRN 85x100x13 VMQ TC is a double-lip silicone radial shaft seal (oil seal) with nominal dimensions of 85x100x13 mm. Its inside diameter is 85 mm, outside diameter is 100 mm and axial width is 13 mm. Manufactured from VMQ silicone rubber, also commercially designated MVQ, the seal features a TC double-lip profile, consisting of a primary sealing lip and an additional auxiliary dust lip.

GRN 85x100x13 VMQ TC – Technical Characteristics

The GRN 85x100x13 VMQ TC is a radial shaft seal designed to seal the interface between a rotating shaft and a stationary housing.

Its primary function is to restrict leakage of the sealed medium while maintaining contact between the main sealing lip and the rotating shaft surface.

The TC construction incorporates an additional auxiliary dust lip, which helps limit the ingress of external contaminants into the primary sealing area.

The defining product characteristics are its 85x100x13 mm dimensions, VMQ silicone elastomer and double-lip TC construction.

Oil Seal 85x100x13 – Dimensions

In the designation 85x100x13, the first value refers to the nominal shaft diameter, the second to the housing bore diameter and the third to the axial width of the seal.

Nominal dimensions alone do not establish manufacturing tolerances or all requirements for the mating surfaces.

TC Double-Lip Oil Seal Construction

The TC profile is commonly used to identify a radial shaft seal with a primary sealing lip and an additional dust lip.

In some European sealing catalogues, a comparable double-lip construction is designated AO.

The two lips perform different functions:

Primary sealing lip: Maintains dynamic contact with the rotating shaft and provides the main sealing function.

Auxiliary dust lip: Positioned towards the external side of the sealing arrangement, it helps reduce the entry of dust and other external contaminants.

Many radial shaft seals of this general construction use a garter spring to maintain contact pressure at the primary lip. However, the exact spring arrangement of this GRN reference should be confirmed from its technical drawing or by inspection.

The TC designation does not, by itself, establish a left-hand or right-hand directional sealing design.

VMQ / MVQ Silicone Rubber Material

The sealing material is VMQ silicone rubber, also referred to commercially as MVQ.

VMQ belongs to the silicone elastomer family and is used in sealing technology where the properties of silicone rubber are required.

Silicone elastomers are generally associated with low-temperature flexibility and resistance to ozone and atmospheric ageing.

However, the actual performance of a finished seal depends on its specific compound formulation.

Without compound-specific documentation, the following properties cannot be assigned to this product as verified specifications:

• Exact operating temperature range

• Maximum shaft speed

• Maximum permissible pressure

• Compatibility with particular oils, fuels or chemicals

• Food-contact or other special approvals

The material designation VMQ alone is insufficient to confirm these parameters.

How the Primary Sealing Lip Works

During shaft rotation, the primary sealing lip maintains contact with the shaft surface.

Under suitable operating conditions, a very thin lubricating film may form within the contact area. This film plays an important role in friction and wear behaviour.

Effective sealing depends on several interacting factors, including shaft surface finish, concentricity, installation quality, lubrication and operating conditions.

The use of silicone rubber does not automatically make the seal suitable for unrestricted shaft speeds or dry-running operation.

Auxiliary Dust Lip in the TC Profile

The additional dust lip distinguishes the 85x100x13 VMQ TC double-lip seal from a corresponding single-lip design.

Its purpose is to help limit the movement of external contaminants towards the primary sealing lip.

This feature does not automatically provide a specified IP protection rating or confirm suitability for continuous immersion or severe contamination.

Such requirements must be assessed for the complete sealing arrangement.

TC vs SC – Double-Lip and Single-Lip Oil Seals

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

85x100x13 VMQ TC: Double-lip construction incorporating a primary sealing lip and an auxiliary dust lip.

85x100x13 VMQ SC: Single-lip construction without the additional dust lip.

The SC designation is commonly associated with the single-lip profile designated A in other sealing systems.

Although the dimensions may match, the two profiles are not automatically interchangeable.

Selection must follow the original equipment requirements and the technical characteristics of the sealing arrangement.

Selecting a Replacement 85x100x13 Oil Seal

When selecting a replacement for the GRN 85x100x13 VMQ TC, verify:

1. Nominal shaft diameter: 85 mm.

2. Nominal housing bore diameter: 100 mm.

3. Axial width: 13 mm.

4. Elastomer material: VMQ silicone rubber.

5. Sealing profile: TC double lip.

6. Auxiliary dust lip requirement.

7. Outer surface construction and housing fit.

8. Operating medium, shaft conditions and rotational requirements.

An 85x100x13 VMQ TC seal is not automatically interchangeable with an 85x100x13 NBR TC seal.

Even when nominal dimensions and lip configuration are similar, silicone rubber and nitrile rubber have different material properties.

Likewise, a single-lip SC seal should not be considered a direct replacement for a double-lip TC seal without technical verification.

Technical Specification

FAQ – GRN 85x100x13 VMQ TC Oil Seal

1. What are the dimensions of the GRN 85x100x13 VMQ TC oil seal?

The seal has a nominal inside diameter of 85 mm, outside diameter of 100 mm and axial width of 13 mm.

2. What material is the 85x100x13 seal made from?

The sealing material is VMQ silicone rubber, also commercially designated MVQ.

3. What does TC mean in the oil seal designation?

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

4. Does the 85x100x13 VMQ TC have a dust lip?

Yes. The auxiliary dust lip is a defining feature of this double-lip profile.

5. Are AO and TC oil seals the same?

AO and TC may refer to comparable double-lip designs in different designation systems. Exact construction, outer surface geometry and dimensions must still be checked before substitution.

6. Can an 85x100x13 VMQ seal be replaced with an NBR seal?

Not automatically. VMQ and NBR have different material characteristics. Compatibility with the operating medium and service conditions must be verified.

7. Is the silicone 85x100x13 oil seal suitable for high temperatures?

Silicone rubber can be used in elevated-temperature sealing applications, but the permissible temperature range of this specific seal requires confirmation from the compound data.

8. Does TC indicate the direction of shaft rotation?

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

AI Overview

GRN 85x100x13 VMQ TC is a double-lip silicone radial shaft seal with an inside diameter of 85 mm, outside diameter of 100 mm and axial width of 13 mm. Manufactured from VMQ silicone rubber, it incorporates a primary sealing lip and an auxiliary dust lip. The TC profile is also commonly designated AO in other sealing systems.