Shaft Seal CORTECO 12011382 NBR B1DUOSF 20x30x5/8 - high-durability rotary oil seal

Applications of the CORTECO 12011382 Shaft Seal

The CORTECO 12011382 NBR B1DUOSF 20x30x5/8 rotary shaft seal is designed for precise sealing of rotating components in industrial machinery, power transmission systems and automotive units. It ensures effective separation of lubricants and protection against contaminants, guaranteeing long service life of shafts, bearings and mechanical assemblies. This type of oil seal is widely used in gearboxes, pumps, electric motors and compact mechanical drives where reliability and resistance to oils and grease are crucial.

Key Advantages and Construction

The seal is manufactured from high-quality NBR (nitrile rubber), offering excellent resistance to oils, hydraulic fluids and standard operating temperatures. The B1DUOSF construction provides a reliable sealing profile that ensures long-term stability under dynamic loads and medium shaft speeds. Thanks to its optimised geometry, the seal maintains consistent pressure on the shaft surface, reducing leakage risk and extending maintenance intervals.

Technical Data

• Manufacturer: CORTECO

• Model: 12011382

• Type: NBR B1DUOSF

• Dimensions: 20x30x5/8 mm

• Material: NBR (nitrile rubber)

• Category: rotary shaft seal / oil seal / technical seal

Main Description

The CORTECO 12011382 NBR B1DUOSF 20x30x5/8 rotary shaft seal is a durable and precisely engineered sealing element designed for demanding industrial and automotive environments. It provides effective sealing of rotating shafts, ensuring protection against lubricant leakage and preventing the ingress of dust, moisture and other contaminants. Manufactured from high-grade NBR rubber, it offers excellent resistance to oils, grease and hydraulic fluids, making it suitable for a wide range of mechanical systems.

As a technical seal built for continuous operation, the CORTECO 12011382 ensures consistent performance even under varying speeds and moderate temperatures. Its optimised sealing lips guarantee stable contact with the shaft surface, reducing wear and maintaining high sealing efficiency. This makes the component ideal for compact gear mechanisms, agricultural machinery, electric motors and hydraulic units where a balance of durability, economy and reliability is required.

The product meets the expectations of maintenance departments, machine manufacturers and service technicians who require a dependable simmering / oil seal that supports long service intervals. Its precise 20x30x5/8 mm dimensions allow easy integration as a replacement part in OEM assemblies. Whether used as a rotary oil seal, shaft seal, engine seal or machine seal, it delivers consistent performance in various industrial applications.

Local Availability:
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FAQ - Frequently Asked Questions

1. What is the difference between a single-lip and a double-lip oil seal?

A single-lip seal focuses on retaining lubricant, while a double-lip design adds a dust lip to protect against external contaminants, increasing overall durability.

2. What are the advantages of NBR material in rotary shaft seals?

NBR provides strong resistance to oils, grease and common hydraulic fluids, making it a cost-effective and reliable material for most industrial sealing tasks.

3. How do I correctly select a shaft seal size?

The key parameters are shaft diameter, housing bore diameter and seal width. All dimensions must match the original component for proper fit and performance.

4. Can this seal be used in high-temperature applications?

NBR works well in standard operating temperatures. For significantly higher temperatures, materials such as FKM may be preferred.

5. Is the CORTECO 12011382 suitable for automotive systems?

Yes, it is commonly used in engines, transmissions and auxiliary drives where a dependable rotary oil seal is required.