3684091
Grommet Seal
Cummins®

This article provides an overview of the 3684091 Grommet Seal manufactured by Cummins. It covers the basic concepts of grommet seals, their function in commercial trucks, key features, benefits, and maintenance suggestions.

Basic Concepts of Grommet Seals

A grommet seal is a protective fitting that prevents wear, leakage, and environmental damage. It is typically made from rubber or synthetic materials and is used to seal openings where cables, wires, or pipes pass through surfaces. Grommet seals play a role in maintaining the integrity of various systems by providing a barrier against moisture, dust, and other contaminants ¹.

Purpose of Grommet Seal 3684091

The 3684091 Grommet Seal is designed to seal openings in commercial trucks where wires, cables, or pipes pass through. It helps in protecting the internal components from environmental factors and ensures the efficient operation of electrical and fluid systems. This seal plays a role in maintaining the performance and longevity of the truck’s systems by preventing leaks and reducing wear ².

Key Features

• Made from durable materials to withstand harsh environments.
• Designed to fit specific openings in commercial trucks.
• Provides a tight seal to prevent leaks and contamination.
• Flexible material allows for easy installation and adjustment.
• Resistant to wear, tear, and environmental factors.

Benefits

• Enhances the protection of electrical and fluid systems.
• Reduces the risk of leaks and contamination.
• Extends the lifespan of internal components.
• Improves overall truck performance and reliability.
• Minimizes maintenance requirements and costs.

Troubleshooting and Maintenance

Regular inspection of the 3684091 Grommet Seal is recommended to ensure it remains in good condition. Signs of wear, cracks, or leaks should be addressed promptly. Maintenance tips include:

• Checking for proper fit and seal integrity.
• Cleaning the area around the seal to prevent buildup of dirt and debris.
• Replacing the seal if it shows signs of damage or deterioration.
• Ensuring that cables or pipes are not exerting excessive pressure on the seal.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. The company is known for its commitment to quality, innovation, and customer satisfaction. Cummins provides a wide range of components and solutions for commercial vehicles, including engines, powertrain, and aftermarket parts ³.

Grommet Seal Part 3684091 Compatibility with Cummins Engines

The 3684091 Grommet Seal is designed to fit seamlessly with several Cummins engine models, ensuring a secure and leak-proof connection in various applications. This part is essential for maintaining the integrity of the engine’s sealing system, preventing fluid leaks and ensuring optimal performance.

ISB Series Engines

The ISB CM2150 and ISB4.5 CM2350 B104 engines are part of Cummins’ ISB series, known for their reliability and efficiency. The 3684091 Grommet Seal is compatible with these engines, providing a crucial seal in areas where pipes or hoses connect to the engine block. This ensures that the engine operates smoothly without any unwanted leaks.

ISF Series Engines

For the ISF3.8 CM2220 AN and ISF3.8 CM2220 F103 engines, the 3684091 Grommet Seal is equally important. These engines are designed for applications requiring high power and efficiency. The grommet seal ensures that all connections are tight and secure, maintaining the engine’s performance and longevity.

ISX Series Engines

The ISX CM871 engine, part of Cummins’ ISX series, is another model that benefits from the 3684091 Grommet Seal. This engine is known for its robust performance and is often used in heavy-duty applications. The grommet seal helps maintain the engine’s sealing integrity, preventing leaks and ensuring consistent performance under demanding conditions.

Application Across Engine Models

The 3684091 Grommet Seal is engineered to fit across multiple Cummins engine models, providing a versatile solution for sealing needs. Whether used in the ISB, ISF, or ISX series, this part ensures that all connections are secure and leak-proof, contributing to the overall reliability and efficiency of the engine.

Role of Part 3684091 Grommet Seal in Engine Systems

The 3684091 Grommet Seal is integral to maintaining the integrity and efficiency of various engine systems. In the Crankcase Breather system, it ensures that the release of gases from the crankcase is controlled and does not lead to contamination or loss of lubrication.

Within the EGR Cooler Kit and Exhaust Recirculation Cooler Kit, the Grommet Seal plays a role in sealing connections, preventing the escape of exhaust gases which could otherwise lead to inefficiencies in the recirculation process.

For the Engine Coolant Vent, it assists in maintaining a sealed environment, ensuring that coolant levels are not affected by external contaminants or pressure changes.

In the Fluid Doser system, the Grommet Seal is employed to maintain a tight seal around fluid pathways, ensuring precise dosing and preventing leaks that could affect engine performance.

The Parts Distribution Center Kit utilizes the Grommet Seal to ensure that all connections within the kit are sealed, maintaining the integrity of the distribution process.

In the Vent Tube system, it ensures that the venting process is controlled and does not allow unwanted substances to enter the system.

Lastly, in the Water Inlet Tube, the Grommet Seal ensures a secure connection, preventing water leaks and maintaining the efficiency of the cooling system.

Overall, the Grommet Seal is a versatile component that enhances the functionality and reliability of various engine systems.

Conclusion

The 3684091 Grommet Seal by Cummins is a critical component in maintaining the integrity and efficiency of commercial truck engines. Its durable construction, precise fit, and versatile application across various engine models make it an essential part for ensuring the longevity and performance of engine systems. Regular maintenance and prompt replacement of worn seals are crucial for optimal engine operation.