Rotary Shaft Seal CORTECO 12010789 NBR BA Oil Seal 15x24x5

Applications & Industrial Usage

The CORTECO 12010789 is a premium rotary shaft seal designed as a shaft sealing ring for demanding automotive and industrial environments. With nominal dimensions of 15 mm (inner diameter) x 24 mm (outer diameter) x 5 mm (width) it fits a wide range of applications including engine seal housings, transmission components, and small gearboxes.
It is referenced for OEM brand replacements: CAGIVA 39975, DUCATI 937711524, PIAGGIO 112978 & 480464, confirming compatibility with high-performance motorcycles and similar powertrain systems.
As a rotary seal or “oil seal”, it offers reliable performance in both automotive seals and industrial applications where high durability, resistance to oils and grease, and minimal downtimes are essential.

Advantages & Key Features

• Material: NBR (nitrile butadiene rubber) with BA profile — engineered for high durability and effective sealing in oil-lubricated environments.

• Precision sizing: 15x24x5 mm ensures seamless integration into existing housings, bearing units or sealing stations.

• Excellent resistance to oils and grease, making it suitable for engine seals, hydraulic drive units, gearboxes, and other technical seal applications requiring a rotary shaft seal with durable lip geometry.

• Compact design supports both single lip oil seal and double lip oil seal arrangements depending on the installation—offering flexibility for standard or more challenging sealing tasks.

• Supports industrial applications and OEM-level replacements. The “BA” type designation indicates a particular seal profile optimized for rotational sealing in housings with limited axial clearance.

Technical Data

• Inner diameter (d): 15 mm

• Outer diameter (D): 24 mm

• Width/height (B): 5 mm

• Seal Type: Rotary shaft seal / oil seal, NBR elastomer, profile BA

• OEM References: CAGIVA 39975, DUCATI 937711524, PIAGGIO 112978, PIAGIO 480464

• Brand: CORTECO

• Application scope: Suitable for engine seal assemblies, transmission shafts, bearing housings, powertrain modules, and compact industrial drives.
  This product is engineered to fulfil the role of a shaft seal or technical seal in both automotive powertrain contexts and broader mechanical systems where reliability and oil containment are critical.

Why Choose This Seal?

When specifying a rotary shaft seal for maintenance or new equipment build-out, the CORTECO 12010789 stands out due to its mix of precision, material quality, and proven OEM lineage. For a B2B environment—whether servicing motorcycles or designing industrial drive units—this part meets the requirement for a robust oil seal or shaft sealing ring that can handle exposure to lubricant, vibrations, and cyclic loads. By choosing this product, you minimise leakage risk, reduce maintenance intervals, and uphold operational uptime, particularly in applications demanding high durability and consistent performance across rotating shafts.

FAQ

Q1: What is the difference between a single lip oil seal and a double lip oil seal?
A1: A single lip oil seal provides one elastomer sealing lip contacting the shaft, adequate for many standard applications. A double lip oil seal adds an additional sealing surface (often a dust lip or secondary lip) to enhance protection against contaminants and improve retention of lubricant—beneficial in harsher or more exposed conditions.

Q2: Which material is best for hydraulic or heavy oil-exposed applications?
A2: NBR (nitrile butadiene rubber) offers excellent resistance to oils and grease and is suitable for many automotive and industrial tasks. For extreme temperatures or more aggressive fluids, fluorocarbon (Viton) or HNBR may be chosen, but for the majority of standard engine seals and industrial shafts, NBR is a reliable choice—as used in this CORTECO 12010789 seal.

Q3: How do I select the correct shaft seal size?
A3: Measure the shaft’s outer diameter (the part where the seal lip contacts), the inner diameter of the housing bore, and the available axial width for the seal. Then select a seal with matching internal diameter, outer diameter and width—15x24x5 mm in this case. Confirm the material, seal profile (BA vs other), and compatibility with lubricant type to ensure proper fit and performance.

Q4: Can this seal be used for industrial drive units beyond motorcycles?
A4: Yes. While it is referenced for motorcycle brands, its specification as a rotary shaft seal and oil seal with precise dimensions and NBR material makes it suitable for broader industrial applications—such as small gearboxes, bearing housings, hydraulic motors and other rotating equipment.

Q5: What does “BA” mean in the seal description?
A5: The “BA” designation refers to the seal profile or type of sealing geometry used by the manufacturer. It typically indicates a standard single-lip seal with a dust lip or reinforcement, suitable for engines and transmissions where compact design and oil retention are required.