CORTECO 19036831 29.8x55x9 FPM HTCY Rotary Shaft Oil Seal

What Is the CORTECO 19036831 Oil Seal?

The CORTECO 19036831 is an original HTCY radial shaft oil seal manufactured from FPM (FKM Fluorocarbon Rubber) for demanding automotive drivetrain applications. Designed with dimensions of 29.8 mm inner diameter, 55 mm outer diameter and 9 mm width, this premium seal is engineered to retain transmission lubricant while protecting rotating components against dirt, moisture and other external contaminants. It is referenced under Alfa Romeo OEM number 9946728 and is used in selected drivetrain and differential applications.

HTCY Design and Construction

The HTCY profile is designed for demanding rotating shaft applications where long service life and reliable sealing are essential.

Main construction features:

• HTCY sealing profile
• Double sealing lip
• Primary spring-loaded sealing lip
• Secondary dust protection lip
• FPM (FKM Fluorocarbon Rubber)
• Precision sealing edge
• Excellent dimensional stability

The primary lip retains lubricant inside the assembly, while the secondary lip protects the sealing area from dust, moisture and road contamination.

Technical Specification

Manufacturer: CORTECO

Part Number: 19036831

Product Type: Rotary Shaft Oil Seal

Design: HTCY

Material: FPM (FKM Fluorocarbon Rubber)

Commercial Material Name: Viton®

Inner Diameter: 29.8 mm

Outer Diameter: 55 mm

Width: 9 mm

Sealing Lips: Double

Garter Spring: Yes

OEM Reference: Alfa Romeo 9946728

How Does the HTCY Oil Seal Work?

The seal creates a dynamic sealing interface between the rotating shaft and the stationary housing.

The primary sealing lip:

• Retains transmission lubricant
• Maintains sealing pressure
• Reduces oil leakage

The secondary sealing lip:

• Prevents dust ingress
• Protects against dirt
• Reduces moisture contamination
• Extends bearing and shaft service life

This double-lip construction provides improved protection in demanding automotive environments.

Why Choose FPM (FKM Viton®)?

FPM fluorocarbon rubber is specifically selected for applications exposed to elevated temperatures and aggressive lubricants.

Key advantages include:

• Excellent high-temperature resistance
• Outstanding resistance to mineral and synthetic oils
• Excellent fuel compatibility
• Superior chemical resistance
• Excellent ageing resistance
• Outstanding ozone resistance
• Low compression set
• Long operational service life

These characteristics make FPM one of the preferred sealing materials for automotive transmissions and drivetrain systems.

Installation Recommendations

For maximum seal life:

• Clean the housing thoroughly.
• Inspect the shaft sealing surface.
• Lubricate the sealing lip before installation.
• Use the correct installation tools.
• Install the seal squarely.
• Avoid damaging the sealing lips.

Proper installation is essential for achieving maximum sealing performance.

Typical Applications

The CORTECO 19036831 HTCY oil seal is used in:

• Automotive transmissions
• Differentials
• Drive axle assemblies
• Gearboxes
• Rotating drivetrain components
• OEM vehicle production
• Automotive repair
• Professional workshop maintenance

Vehicle compatibility should always be verified using the OEM reference number before installation.

OEM Reference

Original Equipment Reference:

OEM: Alfa Romeo 9946728

Why Automotive Professionals Choose CORTECO

• Original equipment manufacturer quality
• Premium FPM sealing material
• Double-lip HTCY construction
• Excellent resistance to oils and fuels
• Reliable operation at elevated temperatures
• Long service life
• Trusted by OEM manufacturers
• Proven sealing performance in drivetrain applications

Frequently Asked Questions (FAQ)

Is CORTECO an OEM manufacturer?

Yes. CORTECO is one of the world's leading manufacturers of original sealing technologies for the automotive industry.

What does the HTCY design mean?

HTCY is a double-lip rotary shaft seal design featuring a spring-loaded primary sealing lip and an additional dust protection lip.

Is FPM the same as FKM?

Yes. FPM and FKM are internationally recognized designations for fluorocarbon rubber. Viton® is the best-known commercial trade name.

Is this oil seal resistant to synthetic transmission oils?

Yes. FPM offers excellent compatibility with mineral oils, synthetic lubricants and many automotive transmission fluids.

Which OEM number does this seal replace?

This seal corresponds to Alfa Romeo OEM 9946728. Vehicle compatibility should always be confirmed before installation.

Where is this oil seal commonly used?

It is commonly installed in automotive drivetrain assemblies including differentials, transmissions and other rotating shaft applications specified by the vehicle manufacturer.