CORTECO 19035130 Rotary Shaft Seal 38x74x11/18,5 ACM HTC9

Application - Transmission and Drivetrain Shaft Seal for Toyota

The CORTECO 19035130 38x74x11/18,5 ACM HTC9 is a precision rotary shaft seal designed for demanding automotive transmission and drivetrain systems. Used as an oil seal and shaft sealing ring, it ensures reliable oil retention and effective protection against contamination in rotating assemblies.

This model corresponds to OEM references:

• Toyota 9031138066

• Toyota 9031138049

With dimensions of 38x74x11/18,5 mm, the seal guarantees accurate housing fit and stable operation under continuous rotational load. It is engineered for applications where correct shaft sealing is critical to maintaining gearbox integrity and preventing lubricant leakage.

The seal features a left-hand rotation design, which is essential in directional shaft systems. Using the correct rotation-specific rotary seal ensures optimal lip performance and extended service life.

Advantages of BASL Construction and ACM Material

The BASL construction includes a reinforced metal insert, elastomer-coated outer diameter and an additional dust lip. In practical terms, this functions as a double lip oil seal, providing enhanced protection against dirt and external contaminants while maintaining internal oil sealing.

The seal is manufactured from ACM (acrylate rubber), a material known for excellent resistance to oils and grease and superior thermal stability compared to standard NBR compounds. ACM is particularly suitable for transmission and engine environments exposed to elevated temperatures and long-term lubricant contact.

Key benefits:

• Reliable rotary shaft seal for gearbox systems

• High durability under continuous dynamic load

• Excellent resistance to oils and grease

• Elastomer-coated outer surface for improved static sealing

• Precise fit for 38 mm shaft diameter

• Optimized for left-hand shaft rotation

Please note that the product may visually differ from illustrative images showing general BASL construction and NBR material examples. The delivered version meets the HTC9 and ACM specification.

Technical Data

• Manufacturer: CORTECO

• Part number: 19035130

• Type: Rotary shaft seal / Oil seal

• Construction: BASL

• Full designation: HTC9

• Inner diameter (d): 38 mm

• Outer diameter (D): 74 mm

• Width (b): 11/18,5 mm

• Material: ACM

• Rotation direction: Left-hand

• Outer surface: Elastomer-coated

• OEM references: Toyota 9031138066, 9031138049

Additional Information - Seal Design and Materials

The HTC9 designation defines a lip profile optimized for directional shaft rotation. ACM material ensures stable performance in high-temperature oil environments typical of transmission systems.

Manufacturer Information (GSPR)

Responsible manufacturer: Corteco GmbH
Address: Badener Str. 4, 69493 Hirschberg, Germany
Email: service@corteco.de

FAQ - Frequently Asked Questions

What is the difference between single lip and double lip oil seals?
A single lip oil seal retains lubricant on one side, while a double lip oil seal includes an additional dust lip for improved contamination protection.

Does rotation direction matter for this seal?
Yes. This model is designed for left-hand rotation. Installing the correct directional seal ensures optimal oil retention and longer service life.

Is ACM better than NBR for transmission applications?
ACM provides better heat resistance and improved long-term stability in high-temperature oil environments compared to standard NBR.

How do I select the correct shaft seal size?
Match the inner diameter to the shaft (38 mm), the outer diameter to the housing bore (74 mm), and confirm the width (11/18,5 mm) according to OEM specification.