CORTECO 12011110 NBR BASL 15x35x7 - Rotary Shaft Oil Seal

CORTECO 12011110 NBR BASL 15x35x7 mm - Rotary Shaft Oil Seal

CORTECO 12011110 is a radial rotary shaft oil seal with dimensions of 15x35x7 mm, manufactured from NBR (nitrile butadiene rubber) in the BASL design. This sealing profile features an elastomer-covered outer diameter, a spring-loaded primary sealing lip, and an additional dust exclusion lip. The seal is designed to retain compatible lubricants around rotating shafts while helping prevent external contaminants from entering the sealed assembly.

Characteristics of CORTECO 12011110

The CORTECO 12011110 Simmerring is a radial shaft seal designed for installation between a rotating shaft and a stationary housing.

Its BASL construction combines a primary dynamic sealing lip with an auxiliary dust lip, providing lubricant retention and additional protection against contamination.

Key construction features:

• NBR material - nitrile butadiene rubber commonly used with compatible lubricating oils and greases.

• BASL sealing profile - elastomer-covered outer diameter with a spring-loaded primary sealing lip and an additional dust lip.

• 15 mm inner diameter - nominal shaft diameter.

• 35 mm outer diameter - nominal housing bore diameter.

• 7 mm width - nominal axial installation width.

• Metal reinforcing insert - provides structural stability and supports the seal geometry.

• Garter spring - helps maintain consistent contact between the primary sealing lip and the rotating shaft.

• Auxiliary dust lip - helps limit the entry of external particles into the primary sealing area.

Technical Specifications

What Does CORTECO 12011110 NBR BASL Mean?

The product designation identifies the manufacturer, specific catalog reference, sealing material, construction profile, and nominal dimensions.

CORTECO

CORTECO is a brand associated with sealing technologies and automotive and industrial replacement components.

12011110

This is the CORTECO product reference used to identify the specific shaft seal. It is not a dimensional designation or material code.

NBR

NBR stands for nitrile butadiene rubber, an elastomer widely used in radial shaft seals because of its compatibility with many mineral oil-based lubricants.

Its suitability for a particular lubricant depends on the chemical composition, operating temperature, additives, and exposure conditions.

BASL

BASL identifies a radial shaft sealing design incorporating:

• An elastomer-covered outer diameter.

• A primary sealing lip with a garter spring.

• An additional auxiliary dust exclusion lip.

15x35x7 mm

These dimensions indicate:

• 15 mm nominal shaft diameter.

• 35 mm nominal housing bore diameter.

• 7 mm nominal seal width.

Construction and Operating Principle

The CORTECO 12011110 seal operates at the interface between a rotating shaft and a stationary housing.

Primary sealing lip

The primary elastomer lip maintains contact with the shaft surface to create a dynamic sealing interface.

The garter spring helps maintain radial contact pressure as operating conditions and sealing lip geometry change during service.

A suitable lubricant film is important for controlling friction, wear, and heat generation at the contact surface.

Auxiliary dust lip

The additional dust exclusion lip is positioned to help prevent external contamination from reaching the primary sealing area.

This feature can be particularly useful where airborne dust or other particles may reach the shaft sealing location.

The auxiliary lip does not make the assembly completely resistant to every form of contamination.

Elastomer-covered outer diameter

The rubber-covered outer surface provides the static sealing interface between the seal and the housing bore.

The internal metal reinforcement supports dimensional stability and helps the seal maintain its installed geometry.

CORTECO BASL Compared with Other Shaft Seal Profiles

These are general construction distinctions used for radial shaft seals.

Even when different profiles have identical nominal dimensions, they should not automatically be considered interchangeable.

Differences in outer diameter construction, sealing lip geometry, and contamination protection may affect installation and operating performance.

Selection and Interchangeability of 15x35x7 mm Oil Seals

Before replacing CORTECO 12011110, verify the requirements of the original sealing arrangement.

Important selection criteria include:

1. Shaft diameter - 15 mm nominal.

2. Housing bore diameter - 35 mm nominal.

3. Available axial installation space - 7 mm nominal.

4. BASL profile compatibility with the original installation.

5. NBR material compatibility with the operating fluid.

6. Shaft surface condition, finish, and radial runout.

7. Operating temperature and rotational speed.

8. Pressure differential across the seal.

9. Required contamination protection.

10. Correct orientation of the primary sealing lip.

A different 15x35x7 mm oil seal may fit the same installation space without providing equivalent sealing performance.

In particular, NBR and FKM versions can differ in chemical compatibility and temperature resistance.

Typical Applications of NBR BASL Radial Shaft Seals

Radial shaft seals with an NBR BASL construction are commonly used in appropriately designed rotating shaft assemblies requiring lubricant retention and protection against external contamination.

Typical applications of this sealing design may include:

• Lubricated bearing housings.

• Gearbox shaft sealing arrangements.

• Rotating mechanical assemblies containing compatible lubricating oils.

• Industrial drive assemblies with suitable shaft and housing geometry.

• Equipment requiring an additional dust exclusion lip.

These examples describe potential applications of the NBR BASL sealing design. They do not establish confirmed OEM applications for CORTECO part number 12011110.

Compatibility with a specific machine, vehicle, gearbox, or motor must be verified independently.

Installation and Operating Recommendations

Correct installation is essential for reliable operation of the CORTECO 12011110 rotary shaft seal.

Before installation, clean the housing bore and shaft surface. Inspect the shaft for scratches, corrosion, sharp edges, or excessive wear in the sealing contact area.

Use an appropriate installation tool to press the seal evenly into the housing without tilting or deforming the sealing lips.

Avoid applying concentrated installation forces directly to the flexible sealing lip.

Where the seal is used for lubricant retention, the spring-loaded primary lip normally faces the medium being sealed, unless the equipment manufacturer's installation instructions specify otherwise.

Apply a compatible lubricant to the primary sealing lip and shaft contact surface before initial operation.

Avoid dry running of the primary sealing lip, as insufficient lubrication may increase friction, heat generation, and premature wear.

Store unused seals in clean, dry conditions away from excessive heat, direct sunlight, and substances that may damage the elastomer.

Alternative Designations and Search References

The following identification formats may be used when searching for this product:

• CORTECO 12011110

• 12011110 CORTECO

• CORTECO 12011110 BASL

• CORTECO 12011110 NBR

• CORTECO 12011110 15x35x7

• CORTECO BASL 15x35x7 NBR

• CORTECO rotary shaft seal 12011110

• CORTECO Simmerring 12011110

These are alternative search and identification formats, not independently verified cross-reference part numbers.

Equivalent manufacturer references and OEM numbers should only be assigned after confirmation in reliable technical documentation.

FAQ - CORTECO 12011110

1. What are the dimensions of CORTECO 12011110?

The nominal dimensions are 15x35x7 mm, corresponding to a 15 mm shaft diameter, 35 mm housing bore diameter, and 7 mm axial seal width.

2. What does BASL mean on a CORTECO oil seal?

BASL identifies a radial shaft seal with an elastomer-covered outer diameter, a spring-loaded primary sealing lip, and an additional dust exclusion lip.

3. What material is CORTECO 12011110 made from?

The specified elastomer is NBR, also known as nitrile butadiene rubber. It is commonly used for sealing applications involving compatible lubricating oils and greases.

4. Is CORTECO 12011110 suitable for mineral oil?

NBR is generally compatible with many mineral oil-based lubricants. However, suitability must be evaluated against the exact lubricant formulation, additives, operating temperature, and application conditions.

5. Does CORTECO 12011110 have a dust lip?

Yes. The BASL profile includes an auxiliary dust exclusion lip in addition to the spring-loaded primary sealing lip.

6. Can CORTECO 12011110 be replaced with any 15x35x7 mm oil seal?

Not necessarily. The replacement must be evaluated for sealing profile, elastomer material, shaft contact geometry, housing fit, and operating conditions. Identical nominal dimensions alone do not establish interchangeability.

7. Can an FKM oil seal replace the NBR version?

An FKM alternative may be suitable in some applications, but the change requires verification of fluid compatibility, temperature conditions, sealing geometry, and equipment requirements. Material substitution should not be treated as automatically equivalent.

8. Is CORTECO 12011110 a directional oil seal?

The BASL designation alone does not establish a directional hydrodynamic lip design. A clockwise or counterclockwise pumping feature should not be assumed without specific product documentation.

CORTECO 12011110 - Key Technical Information

CORTECO 12011110 is an NBR BASL radial rotary shaft oil seal measuring 15x35x7 mm. Its construction includes a spring-loaded primary sealing lip, an auxiliary dust exclusion lip, and an elastomer-covered outer diameter. It is designed for lubricant retention and contamination exclusion in compatible rotating shaft assemblies. Correct selection requires verification of the sealing profile, material, and operating conditions.

CORTECO rotary shaft seals are available through simmering.pl, a specialist supplier of bearings, oil seals, and industrial sealing components.

Orders are supported by stock and logistics operations in Lublin, Poland, with shipping services for customers in Poland, across Europe, and internationally.