CORTECO 12019339 70x95x13 NBR - Rotary Shaft Seal / Oil Seal

Applications & Use Cases

The CORTECO 12019339 shaft seal (70x95x13 mm) is engineered for use as a high-performance rotary seal in engines, gearboxes, hydraulic pumps, transmissions, agricultural machinery, and general industrial equipment. As a rotary oil seal / shaft sealing ring, it provides a reliable barrier between rotating shafts and external environment, preventing oil or grease leaks and protecting internals from contamination.

Common applications include:

• Engine crankshafts and outputs (e.g. for agricultural or construction machines, including models referencing OEM code JOHN DEERE AL110010).

• Hydraulic drives and pump shafts, where oil resistance and sealing integrity are critical.

• Industrial gearboxes and transmissions operating under oil, grease or hydraulic fluid lubrication.

• Agricultural and off-road equipment exposed to dust, mud, and variable conditions — where a robust seal ensures longevity.

Thanks to its NBR material and standardized dimensions, the seal is widely compatible and ideal as a replacement or maintenance part in industrial, automotive, and agricultural contexts.

Key Advantages & Features

• High durability and oil resistance - NBR (nitrile butadiene rubber) construction ensures strong resistance to oils, greases, hydraulic fluids, and many technical lubricants, making it reliable for long-term use.

• Effective rotary sealing - precise internal lip geometry and build quality provide a secure seal on rotating shafts, minimizing leakage and offering stable operation even under pressure or shaft rotation.

• Versatile industrial and automotive applications - suitable for engines, pumps, hydraulic systems, gearboxes, agricultural machinery, and heavy-duty equipment.

• Compact size for common shafts (70x95x13 mm) - compact yet effective, facilitating easy replacement and compatibility with many common shaft housings.

• Robust sealing performance under varied conditions - can handle fluctuations in temperature, oil viscosity, and mechanical load, providing consistent sealing integrity.

• Cost-efficient maintenance solution - extends equipment lifespan, reduces downtime and maintenance frequency by ensuring reliable oil/grease retention and contamination protection.

Technical Data

• Product: CORTECO 12019339

• Type: Rotary shaft seal / oil seal

• Dimensions: Inner diameter: 70 mm, Outer diameter: 95 mm, Width/height: 13 mm

• Material: NBR (nitrile butadiene rubber)

• Seal design: Single-/Double-lip oil seal (RWDR-KOMBI) - suitable for rotary shafts requiring oil tightness and environmental protection

• Typical use: engines, transmissions, hydraulic pumps, industrial gearboxes, agricultural machinery

Description

The CORTECO 12019339 70x95x13 NBR oil seal is a professional-grade rotary shaft seal designed to meet the stringent demands of industrial, automotive, and agricultural applications. Its NBR elastomer composition delivers excellent resistance to oils, greases, hydraulic fluids, and lubricants, while maintaining flexibility and sealing strength over extended operating cycles.

As a shaft sealing ring, it ensures secure rotary sealing on shafts with 70 mm diameter, fitting precisely into housings of 95 mm outer diameter. The 13 mm width supports reliable lip contact pressure and adequate sealing volume, which helps maintain lubrication, prevent external contamination, and avoid leakage even under dynamic shaft rotation and load.

This seal is particularly valuable in engines and hydraulic systems, where oil retention and environmental sealing are critical. Its compatibility with OEM code references (e.g. JOHN DEERE AL110010) makes it convenient for maintenance and replacement in agricultural tractors, machinery, and heavy equipment.

Whether used in pumps, gearboxes, hydraulic drives, or agricultural machinery, this CORTECO seal provides a dependable, long-lasting barrier — a must-have technical seal for professional maintenance, repair, or production environments.

FAQ - Frequently Asked Questions

What is the difference between a single-lip and a double-lip oil seal?
Single-lip seals focus solely on oil retention and lubrication sealing. Double-lip (or configurations like RWDR-KOMBI) add an additional sealing or dust lip to protect against contaminants — beneficial in dusty or harsh environments.

Why choose NBR material for a shaft seal?
NBR (nitrile butadiene rubber) combines good flexibility with strong resistance to oils, greases, hydraulic fluids and many chemicals, making it a widely used material for oil seals in engines, pumps, and industrial machinery.

How to ensure correct shaft seal fitment?
Match the inner diameter of the seal (70 mm) to the shaft diameter, the outer diameter (95 mm) to the housing bore, and ensure the width (13 mm) fits the design clearance. Proper alignment during installation is also essential for effective sealing.

Is this seal suitable for hydraulic or heavy-duty industrial applications?
Yes — thanks to its NBR composition and precision construction, it withstands oil, grease, hydraulic fluid exposure, moderate shaft speeds, and typical industrial loads, making it suitable for heavy-duty use.

When is a rotary shaft seal required?
Any time a rotating shaft penetrates a housing containing oil, grease, or hydraulic fluid — in engines, pumps, transmissions, hydraulic units, agricultural or construction machinery — a shaft seal ensures fluid retention and contamination protection.