GRN Silicone VMQ 40x62x10 TC - Double Lip Rotary Shaft Oil Seal

GRN VMQ 40x62x10 TC - Technical Characteristics

The GRN 40x62x10 TC silicone oil seal is designed to seal the interface between a rotating shaft and a stationary housing.

Its primary function is to restrict leakage of a compatible operating medium from the sealed assembly.

The TC construction incorporates two sealing lips with different functions:

• A primary sealing lip that operates in dynamic contact with the rotating shaft.

• An auxiliary dust lip that helps restrict the entry of external contaminants.

The main sealing lip is supported by a circumferential garter spring.

The rubber-covered outside diameter provides static sealing between the oil seal and the housing bore.

The sealing elastomer is VMQ silicone rubber, which differs from NBR and FKM in its thermal, mechanical and chemical properties.

Correct product selection requires verification of the complete GRN designation, nominal dimensions, TC profile and compatibility of VMQ with the operating medium.

GRN Silicone Oil Seal 40x62x10 - Dimensions

Inside diameter 40 mm corresponds to the nominal shaft diameter.

Outside diameter 62 mm corresponds to the nominal housing bore diameter.

Axial width 10 mm defines the nominal width of the oil seal.

These dimensions do not independently establish installation tolerances, permissible shaft runout or required shaft surface roughness.

What Does GRN VMQ 40x62x10 TC Mean?

GRN - The product brand identifying the rotary shaft oil seal.

VMQ - Silicone rubber, the elastomer used for the sealing element.

MVQ - An alternative designation commonly used for silicone rubber. VMQ is the standard material designation.

40x62x10 - Nominal dimensions expressed as inside diameter, outside diameter and axial width in millimetres.

TC - A double-lip rotary shaft seal profile with a rubber-covered outside diameter, a spring-loaded primary sealing lip and an auxiliary dust lip.

The TC designation identifies the seal construction. It does not independently specify a particular operating temperature range, shaft speed, pressure rating or direction of shaft rotation.

GRN TC Double Lip Oil Seal Construction

Primary Sealing Lip

The primary sealing lip is manufactured from VMQ silicone rubber and operates in dynamic contact with the rotating shaft.

Its function is to restrict leakage of the retained medium.

Effective sealing depends on the shaft surface condition, lubrication and operating conditions.

Garter Spring

The standard TC profile incorporates a circumferential garter spring supporting the primary sealing lip.

The spring helps maintain sealing contact between the elastomer and the rotating shaft.

The exact spring material is not specified by the TC designation alone.

Auxiliary Dust Lip

The second lip provides additional protection against external contamination.

It helps restrict the entry of dust and small particles into the primary sealing area.

The auxiliary lip does not automatically establish a specific ingress protection rating or suitability for continuous water immersion.

Rubber-Covered Outer Surface

The TC profile features a rubber-covered outside diameter.

This construction provides static sealing between the outer surface of the seal and the housing bore.

The rubber covering can accommodate minor housing surface irregularities within the limits permitted by the seal design.

Metal Supporting Case

The standard TC construction incorporates an internal metal supporting element that helps maintain the seal's geometry.

The exact metal grade and other internal construction details depend on the specific product execution.

VMQ Silicone Rubber - Material Properties

VMQ is a silicone elastomer used in technical sealing applications.

Silicone rubber is characterised by its ability to retain flexibility over a relatively broad temperature range.

Compared with conventional NBR compounds, VMQ may offer advantages in applications where thermal performance is an important selection criterion.

However, silicone rubber also has different mechanical properties, wear resistance and chemical compatibility.

A VMQ oil seal is therefore not automatically a better replacement for an NBR or FKM seal.

Important selection factors include:

• Operating temperature.

• Type of oil, grease or other operating medium.

• Shaft surface speed.

• Operating pressure.

• Shaft surface condition and roughness.

• Lubrication conditions.

• Mechanical wear requirements.

• Compatibility with the specific silicone rubber compound.

The VMQ material designation alone does not establish the exact permissible temperature range, pressure rating, shaft speed or elastomer hardness of this GRN seal.

GRN VMQ TC vs Other Rotary Shaft Seal Variants

The table describes the standard characteristics of the indicated profile families. Specific product execution should always be checked against the manufacturer's technical information.

VMQ TC vs NBR TC

Both versions use a double-lip TC construction, but their sealing materials differ.

VMQ and NBR have different thermal characteristics, mechanical properties and chemical resistance.

They are not automatically interchangeable.

VMQ TC vs FKM TC

Both variants feature a double-lip construction.

However, FKM and VMQ differ in chemical resistance, thermal properties and wear behaviour.

The appropriate material depends on the operating medium and application requirements.

VMQ TC vs VMQ SC

TC is a double-lip profile with an auxiliary dust lip.

SC is a single-lip profile without the additional dust lip.

Even with identical dimensions and material, these constructions are not automatically interchangeable.

Alternative Product Designations

Natural variations of the product designation include:

• GRN VMQ 40x62x10 TC

• GRN Silicone 40x62x10 TC

• GRN 40x62x10 TC Oil Seal

• GRN Double Lip Oil Seal 40x62x10

• Silicone VMQ Rotary Shaft Seal 40x62x10 TC

• GRN Silicone Radial Shaft Seal 40x62x10

• GRN MVQ 40x62x10 TC

• Silicone Oil Seal 40x62x10 Double Lip GRN

The AO designation is also used in some European catalogues for a comparable double-lip radial shaft seal construction.

However, AO and TC should not be treated as universally interchangeable without confirming the exact construction and dimensions.

No additional OEM or manufacturer cross-reference numbers are assigned without verification.

Applications of GRN VMQ 40x62x10 TC

The GRN silicone TC oil seal is intended for radial shaft sealing arrangements where a rotating shaft passes through a stationary housing.

The primary sealing lip helps retain a compatible medium, while the auxiliary dust lip provides additional protection against external contamination.

VMQ silicone rubber may be considered for applications where its thermal and elastic properties are appropriate.

Suitability for a particular machine, gearbox, pump, motor or transmission must be established using the equipment documentation and operating conditions.

In particular, compatibility with mineral oils, synthetic lubricants, transmission fluids and other operating media must be evaluated for the specific VMQ compound.

The nominal dimensions and TC profile alone do not establish compatibility with a particular vehicle or industrial machine.

Selection and Interchangeability

Before purchasing GRN VMQ 40x62x10 TC, verify:

1. Brand and product designation: GRN VMQ 40x62x10 TC.

2. Nominal shaft diameter: 40 mm.

3. Nominal housing bore diameter: 62 mm.

4. Axial width: 10 mm.

5. Sealing material: VMQ silicone rubber.

6. Double-lip TC construction.

7. Requirement for an auxiliary dust lip.

8. Compatibility with the operating medium.

9. Operating temperature, pressure and shaft speed.

10. Shaft surface condition and lubrication requirements.

Matching nominal dimensions of 40x62x10 mm do not guarantee interchangeability.

A silicone VMQ TC oil seal should not automatically be replaced with an NBR BA, NBR TC, FKM TC or VMQ SC seal.

Differences in sealing material and lip construction may affect performance and service life.

Installation and Operating Considerations

Before installation, thoroughly clean the shaft and housing bore.

Inspect the shaft sealing surface for burrs, scratches, corrosion and wear grooves.

Protect the sealing lips when passing the oil seal over sharp shaft edges, keyways or splines.

Press the seal evenly into the housing using an appropriate installation tool.

Do not apply installation force directly to the sealing lips or garter spring.

In conventional oil-retaining arrangements, the spring-loaded primary sealing lip faces the retained medium, while the auxiliary dust lip faces the external environment, unless the equipment documentation specifies otherwise.

Installation lubrication must be compatible with VMQ silicone rubber and the operating medium.

Avoid operating the seal under insufficient lubrication unless the specific seal design and application documentation permit such conditions.

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

Technical Specification

FAQ - GRN Silicone VMQ 40x62x10 TC

1. What are the dimensions of the GRN VMQ 40x62x10 TC oil seal?

The nominal inside diameter is 40 mm, outside diameter is 62 mm and axial width is 10 mm.

2. What does TC mean in a rotary shaft seal?

TC identifies a double-lip radial shaft seal with a rubber-covered outside diameter, a spring-loaded primary sealing lip and an auxiliary dust lip.

3. Are VMQ and MVQ the same material?

Yes. Both designations are used for silicone rubber, with VMQ being the standard material designation.

4. Does the GRN TC oil seal have a dust lip?

Yes. The TC construction incorporates an auxiliary dust lip that helps restrict external contamination.

5. Is silicone VMQ more temperature-resistant than NBR?

VMQ silicone rubber generally maintains elastomeric properties over a broader temperature range than conventional NBR compounds. However, the exact permissible operating temperatures depend on the specific material formulation and seal design.

6. Can an NBR 40x62x10 TC seal replace the GRN VMQ version?

Not automatically. Although the nominal dimensions and profile may match, NBR and VMQ have different thermal, mechanical and chemical properties.

7. What is the difference between TC and SC oil seals?

TC is a double-lip profile incorporating an auxiliary dust lip. SC is a single-lip profile without the additional dust lip.

8. Can GRN VMQ 40x62x10 TC be used in an automatic transmission?

Compatibility cannot be established from the dimensions and TC profile alone. The specific VMQ compound must be suitable for the transmission fluid and operating conditions, and the application must match the equipment manufacturer's requirements.

GRN VMQ 40x62x10 TC - Key Product Information

GRN VMQ 40x62x10 TC is a double-lip silicone rotary shaft oil seal with nominal dimensions of 40x62x10 mm. The VMQ designation identifies silicone rubber, while TC specifies a rubber-covered construction with a spring-loaded primary sealing lip and an auxiliary dust lip. Correct selection requires verification of material compatibility, dimensions and operating conditions.