CORTECO 12011877 FPM BAVIX7 8x16x7 Radial Shaft Seal

Technical specifications

What does CORTECO 12011877 FPM BAVIX7 8x16x7 mean?

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

• CORTECO – manufacturer brand.

• 12011877 – product catalogue reference.

• 8 mm – nominal shaft diameter.

• 16 mm – nominal housing bore diameter.

• 7 mm – nominal axial width.

• FPM – fluoroelastomer, also designated FKM.

• BAVIX7 – manufacturer-specific sealing profile identified in the CORTECO dimensional catalogue.

The BAVIX7 designation should not automatically be simplified to BA, BASL, SC or TC.

The nominal dimensions describe installation geometry rather than permissible shaft tolerances, housing bore tolerances or operating limits.

BAVIX7 sealing profile – construction and operating principle

The BAVIX7 profile should be treated as a specific sealing design rather than a conventional radial shaft seal profile.

1. Dynamic sealing function

The seal is intended to operate against an appropriately prepared rotating shaft surface.

Its primary sealing element limits lubricant movement between the mechanical assembly and the surrounding environment.

The exact lip geometry and contact-force mechanism should be verified using the manufacturer's technical documentation.

2. Static sealing in the housing bore

The outer section of the seal provides the interface with the housing bore, which has a nominal diameter of 16 mm.

The exact outer surface construction and reinforcement arrangement require confirmation for the BAVIX7 profile.

3. Compact installation dimensions

The nominal 8 mm shaft diameter and 7 mm seal width make correct alignment particularly important.

During installation, the sealing element must be protected against damage from sharp edges, grooves and threads.

Shaft runout, surface condition and housing bore geometry should also be checked.

FPM / FKM – material properties

FPM is a fluoroelastomer commonly used in sealing applications requiring resistance to many oils, fuels and elevated temperatures.

Typical characteristics of appropriately selected FPM compounds include:

• Good resistance to many mineral and synthetic oils.

• Compatibility with numerous fuels and lubricating greases.

• Good resistance to thermal ageing.

• Good ozone resistance.

• Relatively low permeability to many substances compared with conventional elastomers.

However, FPM is not universally resistant to all industrial chemicals.

Certain ketones, amines, hot water or steam may be unsuitable for specific FPM compounds.

The exact operating temperature range and chemical compatibility must be established for the particular elastomer formulation used by the manufacturer.

FPM versus NBR – material comparison

FPM should not automatically be replaced with NBR without checking the operating temperature and chemical compatibility requirements.

Other CORTECO seals with dimensions of 8x16x7 mm

The CORTECO dimensional catalogue identifies several different sealing designs with the same nominal dimensions.

Identical dimensions of 8x16x7 mm do not guarantee identical construction or interchangeability.

Differences may include elastomer material, sealing lip geometry, outer surface construction and intended operating conditions.

Selection and interchangeability

Before selecting CORTECO 12011877, verify:

1. Nominal shaft diameter – 8 mm.

2. Nominal housing bore diameter – 16 mm.

3. Installation width – 7 mm.

4. Exact BAVIX7 or BAX7 profile designation.

5. FPM / FKM material specification.

6. Compatibility with the operating medium.

7. Operating temperature.

8. Shaft rotational speed.

9. Condition of the mating surface.

10. Construction of the original sealing component.

Matching nominal dimensions alone does not establish interchangeability.

The replacement must also meet the original application's requirements for material, profile and operating conditions.

Applications

CORTECO 12011877 is a radial shaft seal intended for appropriately designed mechanical assemblies with rotating shafts.

The dimensional catalogue does not establish a specific vehicle manufacturer, original equipment reference or confirmed installation position for this product.

Therefore, it should not be assigned to a particular engine, gearbox, pump or vehicle without additional manufacturer documentation.

Potential applications depend on the exact sealing geometry and the operating conditions of the equipment.

Alternative designations and search references

Common English technical designations include:

• CORTECO 12011877

• CORTECO 12011877B

• CORTECO 12011877 FPM BAVIX7

• CORTECO FPM BAVIX7 8x16x7

• CORTECO FPM BAX7 8x16x7 – alternative designation requiring verification

• CORTECO 8x16x7 FPM Oil Seal

• CORTECO 8x16x7 FKM Shaft Seal

• CORTECO 12011877 Radial Shaft Seal

• CORTECO 8x16x7 Rotary Shaft Seal

• Fluoroelastomer Oil Seal 8x16x7

These designations support product identification but do not independently confirm interchangeability.

Installation and operating recommendations

Before installation, thoroughly clean the housing bore and inspect the shaft surface for corrosion, scratches, burrs and excessive wear.

The seal should be installed evenly using tools suitable for its compact dimensions.

Avoid damaging the sealing element when passing it over sharp edges, grooves or threaded sections.

The correct installation orientation must be determined from the documentation for the specific mechanical assembly.

It should not be assumed solely from conventional installation principles for standard spring-loaded radial shaft seals.

Before operation, prepare and lubricate the mating surfaces according to the equipment manufacturer's instructions.

Incorrect installation, excessive shaft runout or unsuitable lubrication may result in premature wear and leakage.

FAQ – Frequently asked questions

1. What are the dimensions of CORTECO 12011877?

The nominal dimensions are 8x16x7 mm, corresponding to an 8 mm shaft diameter, 16 mm housing bore diameter and 7 mm axial width.

2. What material is used in CORTECO 12011877?

The specified material is FPM, a fluoroelastomer also designated FKM.

3. What sealing profile does CORTECO 12011877 use?

The CORTECO dimensional catalogue identifies BAVIX7. Some commercial listings use BAX7, so the exact designation requires verification.

4. Are CORTECO 12011877 and 12011877B related references?

Yes. Reference 12011877 appears in the dimensional catalogue, while 12011877B is used in replacement-parts listings.

5. Is FPM the same material as NBR?

No. FPM and NBR are different elastomers with different chemical and temperature resistance characteristics.

6. Can any 8x16x7 oil seal replace CORTECO 12011877?

No. The elastomer material, sealing profile and operating conditions must be verified before substitution.

7. Does CORTECO 12011877 have an additional dust lip?

The presence of an additional dust lip has not been conclusively confirmed for the exact BAVIX7 design.

8. Does CORTECO 12011877 have an OE reference?

No specific original equipment reference has been confirmed in the dimensional catalogue information considered here.

CORTECO 12011877 – key information

CORTECO 12011877 is an FPM radial shaft seal with nominal dimensions of 8x16x7 mm. The manufacturer's dimensional catalogue identifies the BAVIX7 sealing profile, while some commercial listings use BAX7. Correct selection requires verification of the complete reference, elastomer material and sealing geometry. Other seals with identical nominal dimensions should not automatically be considered interchangeable.

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.