3866633
O Ring Seal
Cummins®

The 3866633 O Ring Seal, manufactured by Cummins, is a critical component for commercial trucks. It belongs to the category of O Ring Seals, essential for maintaining the integrity of various vehicle systems by preventing leaks and ensuring efficient operation through fluid containment ¹.

Basic Concepts of O Ring Seals

An O Ring Seal is a toroidal (donut-shaped) gasket designed to create a seal when compressed between two surfaces. Its effectiveness depends on its ability to deform under pressure, filling gaps between mating surfaces to prevent fluid or gas passage. Materials like rubber, silicone, and fluorocarbons are commonly used, offering various properties such as flexibility, temperature resistance, and chemical compatibility ².

Role of the 3866633 O Ring Seal in Truck Operation

This Cummins part ensures the integrity of systems it is associated with, such as fuel, hydraulic, and engine components, by maintaining pressure and preventing leaks. Its application is vital for the efficient operation of these systems, ensuring fluids are contained and delivered as intended ³.

Key Features

The 3866633 O Ring Seal is designed for optimal performance and durability, with a structure that allows for effective sealing under compression. Its material composition ensures resistance to specific fluids and operating conditions, featuring specific durometer ratings for optimal flexibility and compression set resistance ⁴.

Benefits

Using this part offers benefits such as improved sealing efficiency, resistance to wear and tear, and compatibility with various fluids and operating conditions. Its design and material properties make it a reliable component for commercial truck applications ⁵.

Troubleshooting and Maintenance

Identifying common issues with O Ring Seals, such as leaks or failures, is crucial for maintaining vehicle efficiency. Regular maintenance practices, including inspection for wear signs, proper installation techniques, and timely replacement, ensure the longevity and effectiveness of the 3866633 O Ring Seal. These practices help prevent system failures and ensure optimal performance ⁶.

About Cummins

Cummins Inc. is renowned in the commercial truck industry for its commitment to quality and innovation. Known for producing reliable automotive components, Cummins has built a reputation for excellence. The company’s dedication to advancing technology and maintaining high manufacturing standards is evident in its products, including the 3866633 O Ring Seal.

Cummins Part 3866633 O Ring Seal Compatibility

The 3866633 O Ring Seal is engineered for a tight seal in various engine applications, fitting seamlessly within specified dimensions and operational conditions.

K19 Engine

For the K19 engine, this part is crafted to fit into designated sealing areas, ensuring the engine’s sealing system integrity and preventing leaks that could compromise performance or efficiency.

QSC8.3 CM850 (CM2850) Engine

In the QSC8.3 CM850 (CM2850) engine, the 3866633 O Ring Seal is engineered for critical sealing points, maintaining engine efficiency by sealing against oil, fuel, and other fluids. Its design withstands operational stresses and temperatures inherent to this engine model.

Grouping of Engines

The 3866633 O Ring Seal is designed with a universal fit for the K19 and QSC8.3 CM850 (CM2850) engines, despite their differences. This compatibility is achieved through precise engineering and adherence to industry standards, ensuring optimal performance in both applications.

Role of Part 3866633 O Ring Seal in Engine Systems

The 3866633 O Ring Seal is integral to the efficient operation of various engine systems by ensuring secure and leak-free connections.

Water Outlet and Cooler Systems

In water outlet and cooler systems, this part prevents coolant or water leakage, maintaining the cooling circuit’s integrity and ensuring optimal engine temperature ranges. It secures the connection between the water outlet and the cooler, aiding in efficient heat dissipation vital for engine longevity.

Marine Gear Oil and Heat Exchanger

For marine gear oil systems and heat exchangers, the 3866633 O Ring Seal maintains oil purity and heat transfer efficiency. In marine applications, it prevents gear oil contamination with water or other impurities. In heat exchangers, it ensures efficient heat transfer between fluids without mixing, preventing system inefficiencies.

Raw Water and Sea Water Pump Systems

In raw water and sea water pump systems, including various pump kits, the 3866633 O Ring Seal prevents leaks at connection points, ensuring uninterrupted water flow for cooling and other functions. This seal ensures efficient pump operation.

Water Outlet Mounting and Water Pump Kit

The 3866633 O Ring Seal is used in water outlet mounting and water pump kits to secure connections to the engine block and prevent coolant leaks, maintaining engine cooling efficiency.

Conclusion

The 3866633 O Ring Seal is a fundamental component in various engine systems, ensuring secure and leak-free connections. Its application across different components highlights its importance in maintaining the efficiency and reliability of engine operations.