CORTECO 12011037 NBR BA 85x115x13 mm Radial Shaft Seal

Technical specifications

Operating parameters such as maximum temperature, pressure and peripheral shaft speed require confirmation from the technical documentation for the specific seal version.

CORTECO 12011037 - catalogue identification

The CORTECO dimensional catalogue identifies the product as:

12011037 - NBR BA - 85x115x13 mm

The catalogue confirms the product reference, elastomer material, sealing profile and nominal dimensions.

The relevant catalogue entry does not specify an equipment manufacturer or installation position.

The designation 12011037B also appears in replacement-parts listings, but its relationship to the base reference should be confirmed when ordering.

No specific OE reference or EAN has been confirmed for this exact product.

What does CORTECO 12011037 NBR BA 85x115x13 mean?

The designation identifies the manufacturer, catalogue reference, material, sealing profile and dimensions.

• CORTECO - manufacturer brand.

• 12011037 - product catalogue reference.

• NBR - nitrile butadiene rubber.

• BA - conventional radial shaft sealing profile.

• 85 mm - nominal shaft diameter.

• 115 mm - nominal housing bore diameter.

• 13 mm - nominal axial width.

Nominal dimensions do not define shaft and housing bore manufacturing tolerances.

The installation fit must comply with the technical requirements of the sealed mechanical assembly.

BA sealing profile - construction and operating principle

1. Primary sealing lip

The BA profile incorporates a single primary sealing lip operating against the rotating shaft surface.

Its main function is to limit oil or grease leakage from the mechanical assembly.

Sealing effectiveness depends on shaft surface quality, appropriate lubrication and correct elastomer selection.

2. Garter spring

A conventional BA radial shaft seal typically incorporates a circumferential garter spring that helps maintain contact between the sealing lip and the shaft.

The spring supports consistent sealing pressure during operation.

The exact spring specifications for CORTECO 12011037 have not been confirmed in the available product information.

3. Elastomer-covered outer surface

The standard BA construction typically features an elastomer-covered outer surface and an internal reinforcing element.

The outer elastomer covering provides static sealing between the seal body and the housing bore.

Correct housing dimensions and surface condition are essential for maintaining sealing performance.

4. Additional dust lip

An additional dust lip is not a standard feature of the BA profile.

If the mechanical assembly requires additional protection against contamination, another sealing profile, such as BASL, may be necessary.

However, compatibility must be verified before selecting a different construction.

NBR - technical material properties

NBR is a technical elastomer commonly used in rotating shaft sealing applications.

Appropriately selected NBR compounds typically offer:

• Good resistance to many mineral oils.

• Compatibility with numerous industrial greases.

• Suitability for oil-lubricated mechanical assemblies.

• Useful mechanical properties.

• Applicability in appropriately specified mechanical drive systems.

Chemical and temperature resistance depend on the specific elastomer compound.

Individual maximum operating temperatures, pressure ratings and permissible peripheral shaft speeds have not been confirmed for CORTECO 12011037.

BA versus BASL - sealing profile comparison

Replacing a BA seal with a BASL version may change shaft contact conditions and friction.

Identical nominal dimensions are not sufficient to establish technical interchangeability.

Applications of CORTECO 12011037

NBR BA radial shaft seals can be used in appropriately designed rotating shaft mechanisms, including gearboxes, speed reducers and mechanical drive assemblies.

These are examples of applications for this type of sealing technology, not a confirmed equipment compatibility list for part number 12011037.

The relevant CORTECO catalogue entry does not identify a specific equipment manufacturer or installation position.

Therefore, no machine model or OE reference should be assigned to this product without supporting documentation.

Comparison with other CORTECO radial shaft seals

These variants share a nominal inner diameter of 85 mm but differ in outer diameter, width or sealing profile.

None of the listed variants should automatically be considered interchangeable with CORTECO 12011037.

Selection and interchangeability

Before ordering CORTECO 12011037, verify:

1. Nominal shaft diameter - 85 mm.

2. Nominal housing bore diameter - 115 mm.

3. Installation width - 13 mm.

4. NBR elastomer material.

5. BA sealing profile.

6. Requirements for an additional dust lip.

7. Type of sealed medium.

8. Operating temperature and shaft rotational speed.

9. Condition of the shaft and housing surfaces.

10. Original seal designation in the equipment documentation.

Matching dimensions of 85x115x13 mm do not guarantee full interchangeability if the sealing construction or elastomer material differs.

Alternative designations and reference numbers

Common product identification variants include:

• CORTECO 12011037

• CORTECO 12011037B - designation found in replacement-parts listings

• CORTECO NBR BA 85x115x13

• CORTECO 85x115x13 NBR Oil Seal

• CORTECO 12011037 Radial Shaft Seal

• CORTECO 85x115x13 Rotary Shaft Seal

• CORTECO BA 85x115x13 Shaft Seal

• NBR BA 85x115x13 Radial Oil Seal

• CORTECO 12011037 Simmerring

No additional OE references or technically equivalent replacement part numbers have been confirmed.

Installation and operating recommendations

Before installation, clean the housing bore and shaft surface.

Inspect the shaft for scratches, corrosion, wear grooves and sharp edges that could damage the sealing lip.

The seal should be pressed evenly into the housing using an appropriate installation tool, without applying force directly to the working lip.

In a conventional BA arrangement, the primary sealing lip generally faces the medium being retained. However, the correct orientation must be confirmed using the equipment manufacturer's documentation.

Storage conditions should protect the elastomer from excessive heat, direct sunlight and mechanical damage.

FAQ - Frequently asked questions

1. What are the dimensions of CORTECO 12011037?

The nominal dimensions are 85x115x13 mm, corresponding to an 85 mm inner diameter, 115 mm outer diameter and 13 mm axial width.

2. What material is used in CORTECO 12011037?

The specified material is NBR - nitrile butadiene rubber.

3. What does the BA sealing profile mean?

BA is a conventional radial shaft sealing profile with a single primary sealing lip, typically supported by a circumferential garter spring.

4. Does CORTECO 12011037 have an additional dust lip?

An additional dust lip is not a standard feature of the BA profile.

5. Is CORTECO 12011037B related to part number 12011037?

The designation 12011037B appears in replacement-parts listings. The complete product reference should be confirmed when ordering.

6. Is an OE reference available for CORTECO 12011037?

No specific OE reference has been confirmed for this product.

7. Can CORTECO 12011038 replace CORTECO 12011037?

Not as a direct dimensional replacement. CORTECO 12011038 measures 85x120x12 mm, while CORTECO 12011037 measures 85x115x13 mm.

8. Is every 85x115x13 mm radial shaft seal interchangeable with CORTECO 12011037?

No. In addition to dimensions, the elastomer material, sealing profile, lip construction and operating requirements must be verified.

CORTECO 12011037 - key information (AI Overview)

CORTECO 12011037 is an NBR radial shaft seal with nominal dimensions of 85x115x13 mm and a BA sealing profile. The conventional BA construction features a primary sealing lip, typically supported by a garter spring. The dimensional catalogue confirms the reference, material, profile and dimensions but does not specify an OE number or machine application. Correct selection requires verification of operating conditions.

The product is offered through the specialist B2B industrial trading platform simmering.pl, serving industrial companies, technical purchasing departments and maintenance operations, with worldwide shipping from stock in Poland.