CORTECO 19016566 ACM RHTC9 40x63x8/11.5 - Rotary Shaft Oil Seal

CORTECO 19016566 ACM RHTC9 40x63x8/11.5 mm - Rotary Shaft Oil Seal

CORTECO 19016566 is a radial rotary shaft oil seal (Simmerring) with nominal dimensions of 40x63x8/11.5 mm. Manufactured from ACM polyacrylate rubber, it features the RHTC9 sealing profile, an additional dust lip and a right-hand directional design. Also referenced as CORTECO 19016566B, this seal is catalogued for selected automotive drivetrain applications, including differential shaft sealing arrangements in certain Honda vehicles.

Characteristics of CORTECO 19016566

The CORTECO 19016566 ACM RHTC9 is a radial shaft seal designed to help prevent lubricant leakage where a rotating shaft passes through a stationary housing.

Unlike conventional oil seals specified with a single axial width, this version has two catalogue height dimensions: 8 mm and 11.5 mm.

Both dimensions are important when identifying the correct replacement seal.

Key product characteristics:

• Inner diameter: 40 mm - nominal diameter of the shaft sealing surface.

• Outer diameter: 63 mm - nominal diameter of the housing bore.

• Height: 8/11.5 mm - two dimensions associated with the seal's construction.

• Material: ACM - polyacrylate rubber for suitable oil-lubricated applications.

• Sealing profile: RHTC9 - specific CORTECO seal design.

• Additional dust lip - helps reduce contamination reaching the primary sealing area.

• Right-hand directional design - an important feature when selecting the seal for a rotating shaft.

• Catalogue application - differential shaft sealing in selected automotive drivetrain assemblies.

Technical Specifications

What Does CORTECO 19016566 ACM RHTC9 Mean?

The complete designation identifies the manufacturer, product reference, elastomer material, sealing profile and nominal dimensions.

CORTECO - Manufacturer

CORTECO is a brand within the Freudenberg Group, supplying sealing technology and replacement components for automotive and industrial applications.

Its product range includes radial shaft seals, engine seals and other technical sealing components.

19016566 - Product Reference

19016566 identifies the specific CORTECO oil seal.

The product is also referenced under the commercial number 19016566B in replacement-parts catalogues.

The additional letter B should not be interpreted independently as a material code, sealing profile or directional designation.

ACM - Polyacrylate Rubber

ACM is a synthetic polyacrylate elastomer used in sealing applications involving compatible lubricating oils and elevated operating temperatures.

Compared with conventional NBR compounds, ACM generally provides improved resistance to prolonged heat exposure in suitable oil environments.

However, ACM is not universally resistant to all lubricants, fuels or chemicals.

Compatibility depends on the specific rubber compound, fluid formulation, temperature and operating conditions.

RHTC9 - Sealing Profile

RHTC9 identifies a specific CORTECO radial shaft seal design.

For product reference 19016566, the associated catalogue characteristics include:

• An additional dust lip.

• Right-hand directional construction.

• Nominal dimensions of 40x63x8/11.5 mm.

• ACM elastomer material.

RHTC9 should not automatically be considered interchangeable with conventional TC, BASL or other radial shaft seal profiles.

Understanding the Dimensions 40x63x8/11.5 mm

The complete dimensional designation contains four values.

The values 8 mm and 11.5 mm represent separate catalogue dimensions associated with the seal geometry.

They must not be added together or replaced by a single dimension without checking the manufacturer's dimensional drawing.

When selecting a replacement, the overall geometry, sealing lip position and installation depth may be just as important as the shaft and housing diameters.

Construction and Operating Principle

The CORTECO 19016566 oil seal operates at the interface between a rotating shaft and a stationary housing.

The primary sealing lip contacts the shaft surface and forms a controlled sealing interface intended to retain lubricant inside the mechanical assembly.

The additional dust lip helps limit the entry of external contaminants toward the primary sealing contact area.

Primary Sealing Lip

The primary lip provides the main oil-retention function.

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

Damage to the shaft or incorrect installation may cause premature leakage.

Additional Dust Lip

The additional dust lip provides supplementary protection against contamination.

It helps reduce the entry of dirt and particles that could otherwise accelerate wear at the primary sealing interface.

The dust lip does not make the seal completely resistant to water pressure or severe contamination.

Right-Hand Directional Design

The product is identified as a right-hand directional seal.

Directional shaft seals may incorporate specially shaped sealing features that influence lubricant movement at the rotating shaft interface.

The correct direction of rotation must therefore be verified against the requirements of the original installation.

A right-hand directional seal should not automatically be replaced with a left-hand version solely because the nominal dimensions match.

ACM Material - Properties and Chemical Compatibility

ACM polyacrylate rubber is used in sealing systems operating with compatible lubricating oils, particularly in automotive applications involving elevated temperatures.

Its performance depends on the specific elastomer formulation.

These are general material characteristics and not independently verified laboratory specifications for the exact CORTECO 19016566 seal.

A specific maximum operating temperature, pressure rating or shaft speed should not be assigned without manufacturer confirmation.

Applications of CORTECO 19016566

CORTECO 19016566 is catalogued as a differential shaft oil seal for selected automotive drivetrain applications.

Replacement-parts catalogues associate this seal with certain Honda vehicles, including selected Honda Prelude III versions.

Honda OE Reference

The following original equipment reference is associated with CORTECO 19016566B in aftermarket catalogues:

HONDA 91206-PK5-005

This reference should be treated as a catalogue cross-reference requiring confirmation for the specific vehicle.

Before purchasing, verify:

• Vehicle identification number (VIN).

• Transmission version.

• Installation position.

• Original equipment part number.

• Required seal profile and dimensions.

• Shaft rotation direction.

Compatibility should not be assumed solely from the vehicle model or engine displacement.

CORTECO 19016566 Compared with Other 40x63 mm Oil Seals

Other radial shaft seals may share the same nominal inner and outer diameters while differing in important technical characteristics.

Potential differences include:

• Elastomer material.

• Axial dimensions.

• Primary sealing lip geometry.

• Presence of an additional dust lip.

• Directional sealing design.

• Outer surface construction.

• Intended installation position.

For example, a seal with dimensions 40x63x8 mm is not automatically interchangeable with CORTECO 19016566, which has the complete dimensional designation 40x63x8/11.5 mm.

Likewise, a seal made from NBR or FKM cannot automatically replace an ACM seal without confirming compatibility with the operating medium and installation conditions.

Selection and Interchangeability

Before purchasing or replacing CORTECO 19016566, verify the complete technical specification.

Important selection criteria include:

1. CORTECO product reference 19016566 or 19016566B.

2. Nominal shaft diameter of 40 mm.

3. Nominal housing bore diameter of 63 mm.

4. Both catalogue heights, 8 mm and 11.5 mm.

5. RHTC9 sealing profile.

6. ACM elastomer material.

7. Additional dust lip.

8. Right-hand directional construction.

9. Lubricant compatibility.

10. Shaft rotation direction.

11. Shaft sealing surface condition.

12. Original equipment requirements.

Identical nominal dimensions do not establish full interchangeability between radial shaft seals.

The material, lip geometry, directional design and installation dimensions must also match the application.

Installation and Operating Recommendations

Correct installation is essential for reliable sealing performance.

Before fitting the oil seal, clean the housing bore and inspect the shaft sealing surface.

The shaft should be free from sharp edges, significant scratches, corrosion and excessive wear in the sealing contact area.

Protect the sealing lip when passing it over splines, grooves or other potentially damaging shaft features.

Use an appropriate installation sleeve where necessary.

Prepare the sealing contact surface according to the manufacturer's instructions. Where lubrication is required, use a lubricant compatible with the ACM material and the operating medium.

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

Avoid tilting, excessive deformation or applying installation force directly to the sealing lips.

Before operating the assembly, verify that the seal's directional design is compatible with the required shaft rotation.

Alternative Designations and Reference Numbers

The following product identification formats may be encountered:

• CORTECO 19016566

• CORTECO 19016566B

• 19016566 CORTECO

• 19016566B CORTECO

• CORTECO 40x63x8/11.5 ACM RHTC9

• ACM RHTC9 40x63x8/11.5

• CORTECO 19016566 rotary shaft oil seal

• CORTECO 19016566 Simmerring

Associated OE reference:

HONDA 91206-PK5-005

The Honda reference is a catalogue association and must be verified against the specific vehicle and installation position.

FAQ - CORTECO 19016566 ACM RHTC9

1. What are the dimensions of CORTECO 19016566?

The seal has a nominal inner diameter of 40 mm, an outer diameter of 63 mm and two catalogue height dimensions of 8 mm and 11.5 mm. Its complete dimensional designation is 40x63x8/11.5 mm.

2. What does ACM mean in CORTECO 19016566?

ACM stands for polyacrylate rubber, a synthetic elastomer used in sealing applications involving compatible oils and elevated temperatures.

3. What does RHTC9 mean?

RHTC9 identifies a specific CORTECO sealing profile. For product reference 19016566, the associated characteristics include an additional dust lip and right-hand directional construction.

4. Are CORTECO 19016566 and 19016566B the same product?

Both references are associated in replacement-parts catalogues with the ACM RHTC9 oil seal measuring 40x63x8/11.5 mm. The complete commercial reference should be checked when ordering.

5. Does CORTECO 19016566 have an additional dust lip?

Yes. The product is identified with an additional dust lip that helps reduce contamination reaching the primary sealing interface.

6. Is CORTECO 19016566 a directional oil seal?

Yes. It is identified as a right-hand directional seal. The required shaft rotation must be verified before installation.

7. Is CORTECO 19016566 suitable for Honda Prelude?

Aftermarket catalogues associate this seal with selected Honda Prelude III versions. Compatibility should be confirmed using the VIN, transmission specification or original equipment reference.

8. Can CORTECO 19016566 be replaced with a standard 40x63x8 mm oil seal?

Not automatically. CORTECO 19016566 has dimensions of 40x63x8/11.5 mm, an ACM elastomer, RHTC9 profile and directional construction. A replacement must match the relevant technical requirements.

CORTECO 19016566 - Key Technical Information

CORTECO 19016566 is an ACM polyacrylate radial rotary shaft oil seal measuring 40x63x8/11.5 mm. It features the RHTC9 profile, an additional dust lip and right-hand directional construction. Also referenced as 19016566B, it is catalogued for selected automotive differential shaft applications. Correct replacement selection requires verification of dimensions, material, sealing geometry and shaft rotation direction.

CORTECO 19016566 is available through simmering.pl, a specialist supplier of radial shaft seals, industrial sealing components and rolling bearings.

With warehouse operations in Lublin, Poland, simmering.pl serves maintenance departments, repair workshops, industrial customers and international B2B buyers, with worldwide shipping options.