CORTECO 19019061 NBR TC Rotary Shaft Seal 55x78x12 mm

Main Description

The CORTECO 19019061 is a precision rotary shaft seal (oil seal) designed to deliver reliable shaft sealing in both automotive and industrial environments. Made from high-quality NBR (nitrile rubber) and featuring a TC double-lip construction, this seal effectively retains lubricants while preventing the ingress of contaminants, making it a robust technical seal for demanding applications.

With dimensions 55 mm inner diameter x 78 mm outer diameter x 12 mm width, this oil seal is ideal for rotating shafts where space is limited but performance must not be compromised. The metal-reinforced case ensures dimensional stability and secure fit in the housing, while the dual sealing lips (one for oil, one for dust) maintain high sealing integrity under dynamic conditions.

This model corresponds to DAIHATSU OEM numbers 9004311080 and 9004311287, making it a suitable replacement for factory applications. Its resistance to oils and grease, combined with high durability, ensures long service life in engine or transmission systems.

In modern machinery, where efficiency and reliability are paramount, the CORTECO 19019061 seal helps reduce maintenance costs by minimizing leaks and wear. It’s especially well-suited for industrial gearboxes, powertrains, pumps, and rotating assemblies in vehicles or equipment.

Applications & Use Cases

• Automotive: engine crankshafts, transmission input/output shafts, differential systems

• Industrial: motors, pumps, gearboxes, hydraulic drives

• Rotating assemblies where fluid retention and contamination exclusion are critical

• OEM and aftermarket replacement in DAIHATSU applications (matching OEM part numbers)

Key Advantages of the TC NBR Design

• Double-lip sealing ensures both fluid retention and contamination protection.

• NBR elastomer offers excellent compatibility with oils, greases, and typical automotive fluids.

• Metal-reinforced outer case prevents deformation and guarantees secure installation.

• Low friction design contributes to energy efficiency, especially important in high-speed or high-cycle applications.

• Robust performance across a wide temperature range, reducing thermal degradation often seen in poorly selected seals.

Technical Data & Specifications

• Manufacturer: CORTECO / Freudenberg

• Part Number: 19019061

• Seal Type: Rotary shaft (oil) seal, double-lip (TC)

• Material: NBR (nitrile rubber)

• Dimensions:

  • ID: 55 mm

  • OD: 78 mm

  • Width: 12 mm

• OEM Equivalent: DAIHATSU 9004311080, 9004311287

• Application Range: Automotive engines, transmissions, industrial drives

FAQ

Q1: What is a rotary shaft oil seal?
A rotary shaft oil seal (also known simply as an oil seal) is a type of shaft sealing ring designed to retain lubricants (oil or grease) on a rotating shaft while keeping out dust and particles.

Q2: What does “TC” mean in this context?
“TC” refers to a double-lip design — one lip maintains the fluid seal, while the second lip helps exclude contaminants. This increases reliability in harsh environments.

Q3: Why choose NBR material for a shaft seal?
NBR (nitrile rubber) is widely used for oil seals due to its excellent resistance to mineral oils, greases, and heat, as well as its mechanical resilience.

Q4: How do I ensure correct installation?
Proper installation involves pressing the seal squarely into the housing bore, ensuring the shaft surface is clean and within tolerance. Incorrect installation can damage the lip or cause early failure.

Q5: What happens if I use the wrong size seal?
Using an incorrectly sized seal may lead to leaks or lip damage. Always measure the shaft diameter, housing bore, and required width before ordering to ensure optimal sealing performance.