Rotary Shaft Seal 40x62x10 NBR SC - Technical Characteristics

The NBR SC 40x62x10 radial shaft seal is designed for dynamic sealing applications involving rotating shafts.

Its primary function is to retain compatible lubricants within a mechanical assembly while limiting leakage at the shaft-to-housing interface.

The SC construction incorporates a single primary sealing lip supported by a circumferential garter spring.

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

NBR is a widely used sealing elastomer suitable for many applications involving compatible mineral oils and greases.

Unlike the double-lip TC profile, the SC design does not incorporate an additional auxiliary dust lip.

Correct selection requires verification of the nominal dimensions, sealing material, profile and operating conditions.

Rotary Shaft 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 axial dimension of the seal.

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

What Does 40x62x10 NBR SC Mean?

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

NBR - Nitrile butadiene rubber, the elastomer used for the sealing element.

SC - A single-lip rotary shaft seal profile with a rubber-covered outside diameter and a spring-loaded primary sealing lip.

Oil Seal - A common technical and commercial term for a radial shaft seal used to retain a compatible lubricant.

Single Lip - Indicates that the seal has one primary sealing lip without an additional auxiliary dust lip.

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

SC Single Lip Oil Seal Construction

Primary Sealing Lip

The primary sealing lip is manufactured from NBR and operates in dynamic contact with the rotating shaft surface.

Its function is to restrict leakage of the retained medium from the sealed assembly.

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

Garter Spring

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

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

The exact spring material depends on the manufacturer and product execution.

Rubber-Covered Outer Surface

The SC profile features a rubber-covered outside diameter.

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

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

Internal Metal Supporting Case

The standard SC construction incorporates an internal metal supporting element.

Its function is to maintain the geometry and structural stability of the oil seal during installation and operation.

The specific metal grade is not established by the SC designation alone.

No Auxiliary Dust Lip

The SC profile is a single-lip construction.

It does not include the additional dust lip found in standard TC double-lip oil seals.

Where increased protection against external contamination is required, the suitability of a TC profile or a separate protective arrangement should be evaluated.

NBR - Nitrile Butadiene Rubber Properties

NBR is a synthetic elastomer widely used in rotary shaft sealing applications.

It is commonly selected for assemblies operating with compatible mineral oils and lubricating greases.

The actual chemical resistance and permissible operating conditions depend on the specific NBR compound.

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 rubber compound.

The NBR material designation alone does not establish the exact permissible temperature range, maximum pressure, shaft speed or elastomer hardness of this oil seal.

NBR SC vs Other Rotary Shaft Seal Profiles

The table describes typical construction characteristics. Exact product execution should be confirmed using the relevant manufacturer's technical documentation.

NBR SC vs NBR TC

Both profiles use NBR and a spring-loaded primary sealing lip.

The TC profile includes an additional dust lip, while SC is a single-lip design.

NBR SC vs VMQ SC

Both are single-lip constructions, but their elastomer materials differ.

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

They are not automatically interchangeable.

NBR SC vs NBR SB

SC features a rubber-covered outside diameter.

SB has an exposed metal outer surface.

This difference affects static sealing and installation requirements.

Alternative Product Designations

Common designation formats include:

• Rotary Shaft Seal 40x62x10 NBR SC

• Oil Seal 40x62x10 NBR SC

• NBR SC 40x62x10

• Single Lip Oil Seal 40x62x10

• Radial Shaft Seal 40x62x10 NBR

• NBR Rotary Shaft Seal 40x62x10

• 40x62x10 SC Oil Seal

• Shaft Oil Seal 40x62x10 Single Lip

The profile designation A is also used in some European catalogues for a comparable single-lip radial shaft seal construction.

However, A and SC should not be treated as universally interchangeable without confirming the actual product geometry and construction.

No manufacturer-specific reference number or OEM cross-reference is assigned without verification.

Applications of the 40x62x10 NBR SC Oil Seal

Single-lip SC rotary shaft seals are used in mechanical assemblies where a rotating shaft passes through a stationary housing.

Their main function is to retain a compatible lubricant within the assembly.

The SC construction may be suitable where an additional dust lip is not required or where external contamination protection is provided by another component.

Potential application categories include rotating shaft arrangements in industrial machinery and mechanical power transmission equipment, subject to compatibility verification.

The nominal dimensions and SC profile alone do not establish suitability for a particular motor, gearbox, pump, vehicle or machine.

Selection must follow the equipment manufacturer's requirements and the actual operating conditions.

Selection and Interchangeability

Before purchasing a 40x62x10 NBR SC rotary shaft seal, verify:

1. Nominal shaft diameter: 40 mm.

2. Nominal housing bore diameter: 62 mm.

3. Axial seal width: 10 mm.

4. Sealing material: NBR.

5. Single-lip SC profile.

6. Rubber-covered outside diameter.

7. Requirements for external contamination protection.

8. Compatibility with the operating medium.

9. Operating temperature, pressure and shaft speed.

10. Shaft surface condition and installation requirements.

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

An NBR SC oil seal is not automatically interchangeable with an NBR TC, VMQ SC, NBR SB or another seal manufactured from a different elastomer.

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

Installation and Operating Considerations

Before installation, clean the shaft and housing bore thoroughly.

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

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

Press the seal evenly into the housing using a suitable installation tool.

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

In conventional oil-retaining arrangements, the spring-loaded sealing lip faces the retained medium unless the equipment documentation specifies otherwise.

Use installation lubrication compatible with NBR and the operating medium.

Avoid operating the seal under insufficient lubrication unless the application documentation permits such conditions.

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

Technical Specification

FAQ - Rotary Shaft Seal 40x62x10 NBR SC

1. What are the dimensions of the 40x62x10 NBR SC oil seal?

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

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

SC identifies a single-lip radial shaft seal with a rubber-covered outside diameter and a spring-loaded primary sealing lip.

3. Does an SC oil seal have an auxiliary dust lip?

No. The standard SC profile does not include an additional dust lip. This feature is incorporated in the TC profile.

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

SC is a single-lip construction, while TC includes an auxiliary dust lip in addition to the primary sealing lip.

5. Is NBR suitable for oil sealing applications?

NBR is widely used with compatible oils and greases. Suitability for a specific operating medium depends on the rubber compound and application conditions.

6. Can an NBR SC seal be replaced with a silicone VMQ version?

Not automatically. NBR and VMQ have different mechanical, thermal and chemical properties, even when their nominal dimensions and profiles match.

7. Are SC and A the same type of oil seal?

SC and A are used for comparable single-lip constructions in different designation systems. Exact interchangeability must be verified using the manufacturer's specifications.

8. Does the SC profile incorporate a garter spring?

Yes. The standard SC construction uses a circumferential garter spring to support the primary sealing lip.

Rotary Shaft Seal 40x62x10 NBR SC - Key Product Information

Rotary Shaft Seal 40x62x10 NBR SC is a single-lip radial shaft oil seal with nominal dimensions of 40x62x10 mm. The NBR elastomer is used for sealing compatible lubricants. The SC profile features a rubber-covered outside diameter and a spring-loaded primary sealing lip without an auxiliary dust lip. Correct selection requires verification of dimensions, material compatibility and operating conditions.