4380721
Rectangular Ring Seal
Cummins®

The 4380721 Rectangular Ring Seal is a component manufactured by Cummins, a well-established name in the commercial truck industry. This seal is specifically designed for use in commercial trucks, where it contributes to the efficient operation of the vehicle’s engine or transmission system.

Basic Concepts of Rectangular Ring Seals

A Rectangular Ring Seal is a type of gasket used in mechanical systems to prevent leaks between mating surfaces. It functions by creating a barrier that blocks the passage of fluids or gases. These seals are commonly used in applications where a reliable seal is required under high pressure or in the presence of aggressive fluids ¹.

Purpose of the 4380721 Rectangular Ring Seal in Truck Operations

In the context of commercial trucks, the 4380721 Rectangular Ring Seal plays a role in maintaining the integrity of the engine or transmission system by providing a seal that prevents the leakage of fluids. This ensures that the system operates efficiently and that the truck performs reliably under various operating conditions ².

Key Features of the 4380721 Rectangular Ring Seal

The 4380721 Rectangular Ring Seal is characterized by its rectangular cross-section, which allows it to conform to the surfaces it seals against. It is constructed from materials that offer durability and resistance to the operating conditions found in commercial truck engines and transmissions. The specific shape, size, and material properties of this seal are tailored to meet the demands of its application ³.

Benefits of Using the 4380721 Rectangular Ring Seal

The use of the 4380721 Rectangular Ring Seal offers several advantages. It provides improved sealing efficiency, which helps to maintain system performance. Its durable construction ensures longevity, even under challenging conditions. Additionally, the seal’s resistance to various operating environments contributes to the overall reliability of the truck’s engine or transmission system.

Installation Considerations

Proper installation of the 4380721 Rectangular Ring Seal is important for ensuring optimal performance and longevity. Guidelines for installation include ensuring that the mating surfaces are clean and free from debris, using the correct torque specifications when tightening components, and verifying that the seal is properly seated.

Troubleshooting Common Issues

Common problems associated with Rectangular Ring Seals may include leaks or seal failure. Troubleshooting steps can involve inspecting the seal and mating surfaces for damage, ensuring that the seal is correctly installed, and checking for any signs of wear or degradation that may indicate the need for replacement.

Maintenance Tips

Regular maintenance of the 4380721 Rectangular Ring Seal can help prevent failures and extend its service life. This includes periodic inspection for signs of wear or damage, cleaning the seal and mating surfaces as part of routine maintenance, and replacing the seal according to the manufacturer’s recommendations or when signs of degradation are observed.

Cummins: Manufacturer Overview

Cummins is a company with a long-standing reputation in the commercial truck industry. It offers a wide range of products designed to enhance the performance and reliability of commercial vehicles. Cummins’ commitment to quality and innovation is reflected in its product line, which includes components like the 4380721 Rectangular Ring Seal.

Cummins Rectangular Ring Seal Part 4380721 Compatibility

The Cummins Rectangular Ring Seal part number 4380721 is designed to fit seamlessly within a variety of Cummins engine models. This part is crucial for maintaining the integrity of the engine’s sealing system, ensuring optimal performance and longevity.

QSK50 Engine

The QSK50 engine, known for its robust design and high power output, incorporates the 4380721 Rectangular Ring Seal in its sealing architecture. This part is integral to the engine’s ability to maintain pressure and prevent leaks, contributing to the overall efficiency and reliability of the QSK50.

CM2350 Engine

Similarly, the CM2350 engine benefits from the use of the 4380721 Rectangular Ring Seal. This engine, often utilized in heavy-duty applications, relies on precise sealing to operate effectively under demanding conditions. The 4380721 part ensures that the CM2350 maintains its performance and durability.

K108 Engine

The K108 engine, another member of the Cummins lineup, is also compatible with the 4380721 Rectangular Ring Seal. This part plays a vital role in the engine’s sealing system, helping to maintain the necessary pressure and prevent any potential leaks. Its compatibility with the K108 ensures that the engine operates smoothly and efficiently.

Grouping of Engines

The 4380721 Rectangular Ring Seal is designed to fit within the sealing systems of the QSK50, CM2350, and K108 engines. These engines, while differing in their specific applications and power outputs, share a common requirement for reliable sealing solutions. The 4380721 part meets this requirement, ensuring that each engine can perform at its best.

Role of Part 4380721 Rectangular Ring Seal in Engine Systems

The 4380721 Rectangular Ring Seal is an essential component in ensuring the integrity and efficiency of various engine systems. This seal is strategically positioned to prevent leaks and maintain pressure within the system.

Integration with the Cover

When installed, the 4380721 Rectangular Ring Seal interfaces with the engine cover, creating a tight seal that prevents the escape of fluids or gases. This is particularly important in high-pressure environments where even minor leaks can lead to significant performance issues. The seal ensures that the cover remains securely in place, protecting internal components from external contaminants.

Function within the Hand Hole

The hand hole is a critical access point for maintenance and inspection of the engine’s internal components. The 4380721 Rectangular Ring Seal is placed around the perimeter of the hand hole to ensure that it remains sealed when not in use. This prevents the ingress of dirt, moisture, and other debris that could compromise engine performance. Additionally, it helps maintain the pressure integrity of the system, ensuring that any pressurized fluids or gases remain contained.

Sealing the Hand Hole Cover

The hand hole cover is designed to be easily removable for routine checks and repairs. The 4380721 Rectangular Ring Seal fits precisely around the hand hole cover, providing a robust seal that withstands the rigors of repeated use. This seal is vital for maintaining the engine’s operational efficiency by ensuring that the cover can be securely fastened and unsealed as needed without compromising the system’s integrity.

Conclusion

In summary, the 4380721 Rectangular Ring Seal plays a significant role in maintaining the functionality and reliability of engine systems by ensuring that covers and access points remain effectively sealed. Its proper installation, maintenance, and compatibility with various Cummins engines contribute to the overall performance and longevity of commercial trucks.