3909356
Rectangular Ring Seal
Cummins®

The Rectangular Ring Seal 3909356, 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 optimal performance and efficiency. Cummins, a renowned name in the automotive industry, is known for its commitment to quality and innovation, making the 3909356 a reliable choice for truck operators and maintenance professionals ¹.

Basic Concepts of Rectangular Ring Seals

A Rectangular Ring Seal is a type of gasket designed to provide a secure seal between two or more mating surfaces. These seals function by being compressed between the surfaces, creating a barrier that prevents the leakage of fluids or gases. They are commonly used in sealing systems where a robust and reliable seal is required. The materials used in their construction vary but often include elastomers, rubber, or composite materials, chosen for their durability, flexibility, and resistance to various operating conditions ².

Role of the 3909356 Rectangular Ring Seal in Truck Operation

The 3909356 Rectangular Ring Seal plays a specific role in the operation of a truck by ensuring the integrity of seals in critical areas. It is typically placed in systems where fluid or gas containment is necessary, such as in the engine, transmission, or hydraulic systems. By interacting with components like flanges, pipes, and housings, it helps maintain system pressure, prevent leaks, and ensure the efficient operation of the truck. Its proper function is vital for the overall performance and longevity of the truck’s systems ³.

Key Features

The 3909356 Rectangular Ring Seal is characterized by its design and material composition. It is crafted from high-quality materials that offer excellent resistance to wear, tear, and environmental factors. Its rectangular shape allows for a larger sealing surface area compared to traditional O-rings, enhancing its sealing capabilities. Additionally, the seal may feature unique attributes such as anti-extrusion properties or specific durometer ratings to meet the demands of its application.

Benefits

Utilizing the 3909356 Rectangular Ring Seal offers several advantages. It provides improved sealing efficiency, ensuring that systems operate under the correct pressure and without leaks. Its durability under various operating conditions contributes to the longevity of the truck’s components, reducing the need for frequent replacements. Furthermore, the seal’s design and material properties enhance the overall reliability and performance of the truck’s systems.

Troubleshooting and Maintenance

Common issues associated with Rectangular Ring Seals include wear, tear, and failure due to environmental factors or improper installation. Troubleshooting these issues involves inspecting the seal for signs of damage, such as cracks, deformation, or hardening. Regular maintenance practices, including recommended inspection intervals and proper replacement procedures, are crucial for ensuring the longevity and effectiveness of the seal. Following manufacturer guidelines for installation and operation can help prevent premature failure and ensure optimal performance.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a history spanning over a century, Cummins has established itself as a pioneer in diesel engine manufacturing, known for its innovation, quality, and commitment to customer satisfaction. The company’s expertise in engine technology and components, including seals like the 3909356, underscores its dedication to enhancing the performance and reliability of commercial vehicles.

Compatibility with Cummins Engines

The Rectangular Ring Seal part 3909356 by Cummins is designed to fit seamlessly with several engine models. This part is integral to the operation of these engines, ensuring that they function optimally by providing a reliable seal.

For the 4B3.9 and QSB3.9 30 CM550 engines, the 3909356 part is a crucial component that helps maintain the integrity of the engine’s sealing system. Its design ensures that there is no leakage, which is vital for the performance and longevity of these engines.

Similarly, for the 6B5.9 and QSB5.9 30 CM550 engines, the 3909356 part plays a significant role. It is engineered to fit precisely, providing a tight seal that prevents any unwanted fluid or gas from escaping, thereby maintaining the engine’s efficiency.

The B3.3 and B4.5 engines also benefit from the 3909356 part. Its compatibility with these engines ensures that they can operate smoothly without any issues related to sealing. This part is a testament to Cummins’ commitment to quality and reliability.

Lastly, the B6.7S and QSB5.9 CM550 engines are also equipped with the 3909356 part. Its design is such that it fits perfectly with these engines, providing a seal that is both effective and durable. This ensures that these engines can perform at their best, with minimal maintenance required.

Role of Part 3909356 Rectangular Ring Seal in Engine Systems

The Rectangular Ring Seal, part number 3909356, is an essential component in ensuring the integrity and efficiency of various engine systems. Its application spans across multiple critical areas within the engine, contributing to the overall performance and reliability of the engine.

Fuel System Integration

In the Bosch Fuel Pump Kit and Fuel Injector Kit, the Rectangular Ring Seal is utilized to create a secure and leak-proof connection between the fuel pump and the fuel lines. This seal prevents fuel leaks, ensuring that the fuel delivery system operates efficiently and safely. Similarly, in the Fuel Injector and Cavity Injector, the seal maintains the precise fuel metering required for optimal combustion.

Engine Structural Components

For the Connecting Rod and Connecting Rod and Piston assemblies, the Rectangular Ring Seal is employed to seal the interfaces between the rod and the crankshaft, as well as between the rod and the piston. This sealing is vital for maintaining the lubrication and preventing metal-to-metal contact, which could lead to wear and failure.

Cylinder Head and Gasket Applications

In the Cylinder Head Repair Kit and Engine Repair Kit, the seal is used in conjunction with the Upper Engine Gasket Set and Lower Engine Gasket Set to ensure that the combustion chamber remains sealed. This is particularly important in high-performance engines where even the smallest leak can significantly impact engine efficiency and power output.

Injection System Seals

The Injection and Injector components, including the Service Kit Injector and Injector Kit, rely on the Rectangular Ring Seal to maintain the integrity of the fuel injection system. The seal ensures that the fuel is delivered at the correct pressure and timing, which is essential for the engine’s performance and emissions control.

Comprehensive Gasket Sets

In the Gasket Full Engine Set and UPR Eng GSK (SUND), the Rectangular Ring Seal is a key component that ensures all critical interfaces within the engine are properly sealed. This includes the seals between the engine block, cylinder head, and various ancillary components.

Performance and Maintenance Kits

For Performance Part and Performance Parts, the seal is often included in Onboard Spares and Campaign Kit to ensure that maintenance and repair procedures can be performed quickly and effectively without compromising the engine’s sealing integrity.

Conclusion

The Rectangular Ring Seal, part number 3909356, plays a multifaceted role in maintaining the seals across various engine systems, ensuring that the engine operates efficiently, reliably, and within the desired performance parameters. Its compatibility with multiple Cummins engine models underscores its importance in the automotive industry, reflecting Cummins’ commitment to quality and innovation.