3906694
Rectangular Ring Seal
Cummins®

The 3906694 Rectangular Ring Seal, manufactured by Cummins, is a specialized component designed for use in commercial trucks. This seal is integral to maintaining the integrity of various systems within these vehicles, ensuring efficient operation and reliability.

Basic Concepts of Rectangular Ring Seals

Rectangular ring seals are sealing elements used in mechanical systems to prevent fluid or gas leakage between mating surfaces. They function by creating a barrier that conforms to the surfaces it contacts, providing a tight seal under pressure. These seals are commonly employed in applications where high pressure, temperature variations, and dynamic loads are present ¹.

Role of 3906694 Rectangular Ring Seal in Truck Operation

In commercial trucks, the 3906694 Rectangular Ring Seal plays a role in maintaining the sealing integrity of specific components within the truck’s systems. It is typically positioned in areas where fluid or gas transfer occurs under pressure, such as in hydraulic systems, fuel lines, or engine compartments. By ensuring a reliable seal, this component contributes to the overall efficiency and safety of the truck’s operation ².

Key Features

The 3906694 Rectangular Ring Seal is characterized by several key features that enhance its performance. It is constructed from durable materials that can withstand the harsh operating conditions found in commercial trucks. The design of the seal allows it to adapt to the surfaces it contacts, providing a consistent seal even under dynamic loads. Additionally, it may possess unique attributes such as resistance to specific chemicals or the ability to operate within a wide temperature range ³.

Benefits

The use of the 3906694 Rectangular Ring Seal offers several benefits. It provides improved sealing efficiency, which helps in maintaining system pressure and preventing leaks. The seal’s durability ensures long-term performance, reducing the need for frequent replacements. Furthermore, its resistance to various operating conditions, including temperature extremes and chemical exposure, enhances the reliability of the truck’s systems.

Troubleshooting and Maintenance

Common issues associated with rectangular ring seals include leaks, wear, and failure due to improper installation or environmental factors. Troubleshooting these problems involves inspecting the seal for signs of damage, ensuring proper installation, and addressing any environmental factors that may affect seal performance. Regular maintenance practices, such as checking for wear and ensuring correct installation, can help ensure the longevity and effectiveness of the seal.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the commercial truck industry. The company offers a wide range of products designed to meet the demanding requirements of commercial vehicles, including engines, powertrain components, and aftermarket parts.

Cummins Rectangular Ring Seal 3906694 Compatibility

The Cummins Rectangular Ring Seal part number 3906694 is designed to fit a variety of Cummins engines, ensuring a reliable seal for critical components. Here is a breakdown of the engines with which this part is compatible:

4B3.9, 6B5.9, 6C8.3, B4.5, L8.9, L8.9 L121, L9.3 L105, L9.5 L117

The 3906694 is compatible with several models within the 4B, 6B, 6C, B4, L8, L9 series. These engines are known for their robust design and are often used in heavy-duty applications. The seal ensures that these engines maintain optimal performance by preventing leaks and maintaining pressure integrity.

C GAS PLUS CM556, C8.3 G

This seal also fits the C GAS PLUS CM556 and C8.3 G engines. These engines are typically used in applications requiring high efficiency and reliability, such as agricultural and industrial machinery. The seal’s precision fit helps maintain the engine’s operational efficiency.

QSB3.9 30 CM550, QSB5.9 30 CM550

The QSB3.9 30 CM550 and QSB5.9 30 CM550 engines are part of Cummins’ Quantum Series, known for their advanced technology and performance. The 3906694 is engineered to fit these engines, ensuring they operate smoothly and efficiently. This compatibility is crucial for maintaining the high standards expected in these advanced engine models.

By ensuring a proper fit across these various engine models, the Cummins Rectangular Ring Seal 3906694 contributes to the overall reliability and performance of the engines it is used in.

Role of 3906694 Rectangular Ring Seal in Engine Systems

The 3906694 Rectangular Ring Seal is an essential component in ensuring the integrity and efficiency of various engine systems. Its primary function is to provide a secure and leak-proof seal in applications where fluids or gases need to be contained within specific pathways.

Fuel System Integration

In the Bosch Fuel Pump Kit, the Rectangular Ring Seal is utilized to ensure that fuel lines remain pressurized and free from leaks. It fits snugly within the Fuel Pump Coupling and the Fuel Filter Location, maintaining the necessary pressure for efficient fuel delivery to the engine. This seal is also critical in the Fuel Filter assembly, where it prevents any fuel leakage that could lead to inefficient engine performance or safety hazards.

Cooling System Applications

Within the Cooler and Thermostat Housing, the 3906694 Rectangular Ring Seal plays a significant role. It ensures that coolant flows smoothly through the engine without any leaks, which is vital for maintaining optimal engine temperature. The seal fits precisely within the housing, contributing to the overall efficiency of the cooling system.

Lubrication System

In the Lubrication Oil Filter Head, this seal is employed to maintain the integrity of the oil filtration process. It ensures that engine oil remains within the designated pathways, providing consistent lubrication to moving parts and reducing wear and tear.

Engine Overhaul and Rebuild Kits

During engine overhauls or rebuilds, the 3906694 Rectangular Ring Seal is a common component found in various kits such as the Pistonless Overhaul Kit, Rebuild Kit, and Full Engine Gasket Set. It is instrumental in re-establishing secure seals in areas where gaskets and seals may have degraded over time.

Cylinder and Upper Engine Gasket Sets

In Cylinder Kits and Upper Engine Gasket Sets (including .15mm, .50mm, and stud sets), the Rectangular Ring Seal is used to ensure that combustion gases remain within the cylinder, enhancing engine efficiency and power output. It also plays a role in the Set Gasket Cylinder Head, where it helps maintain the seal between the cylinder head and the engine block.

Additional Applications

The seal is also found in PDC Kits and Upper Engine Gasket Stud Sets, where it ensures that all connections remain tight and leak-free. This is particularly important in high-pressure areas of the engine, where even a small leak can lead to significant performance issues.

Conclusion

The 3906694 Rectangular Ring Seal is a versatile component that enhances the reliability and performance of various engine systems by providing essential seals in critical applications. Its compatibility with a wide range of Cummins engines ensures that it can be relied upon to maintain the integrity and efficiency of these systems.