3906252
Rectangular Ring Seal
Cummins®

Introduction

The Cummins 3906252 Rectangular Ring Seal is a critical component designed to maintain the integrity of seals within commercial truck operations. It plays a significant role in ensuring the efficiency and reliability of truck engines and transmissions. This seal is part of Cummins’ extensive range of high-quality components aimed at enhancing the performance and longevity of commercial vehicles.

Basic Concepts of Rectangular Ring Seals

A Rectangular Ring Seal is a type of gasket that provides a seal between two or more parts in mechanical systems. It functions by filling the gap between mating surfaces, preventing the leakage of fluids or gases. These seals are commonly used in applications where a reliable seal is required under varying conditions of pressure, temperature, and mechanical stress ¹.

Purpose of the 3906252 Rectangular Ring Seal

The 3906252 Rectangular Ring Seal ensures a tight seal in the engine or transmission system of commercial trucks. This seal helps maintain the integrity of the system by preventing leaks of oil, fuel, or other fluids, which is vital for the efficient operation of the truck. Its function contributes to the overall performance and durability of the vehicle ².

Key Features

The Cummins 3906252 Rectangular Ring Seal is characterized by several key features that enhance its performance. It is made from high-quality materials that offer resistance to wear and degradation under operating conditions. The design of the seal ensures a snug fit in the application, providing a reliable barrier against leaks. Additionally, the seal may feature unique attributes such as anti-extrusion properties, which help it maintain its shape and effectiveness over time ³.

Benefits

The use of the 3906252 Rectangular Ring Seal offers several benefits. It provides improved sealing efficiency, which is crucial for maintaining the performance of the engine or transmission system. The seal’s durability ensures long-term reliability, reducing the need for frequent replacements. Furthermore, its contribution to overall system reliability helps in minimizing downtime and maintenance costs for commercial truck operators.

Installation Process

Proper installation of the 3906252 Rectangular Ring Seal is crucial for its effectiveness. The process involves cleaning the mating surfaces to ensure a good seal, positioning the seal correctly within the application, and using the appropriate tools to secure it in place without damaging the seal. Careful attention to these steps ensures the seal functions as intended.

Common Issues and Troubleshooting

Common problems associated with Rectangular Ring Seals include leaks or wear over time. Troubleshooting these issues may involve inspecting the seal for damage, ensuring it is correctly installed, and replacing it if necessary. Regular checks can help identify potential issues before they lead to significant problems.

Maintenance Tips

Regular maintenance of the 3906252 Rectangular Ring Seal is recommended to prolong its lifespan and ensure optimal performance. This includes periodic inspections for signs of wear or damage and replacing the seal according to the manufacturer’s guidelines or as part of routine maintenance schedules. Keeping the seal and its surroundings clean can also contribute to its longevity.

Compatibility and Applications

The 3906252 Rectangular Ring Seal is designed for use within Cummins engines and other commercial truck components. Its versatility allows it to be applied in various systems where a reliable seal is required, demonstrating its widespread use in the industry.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions solutions. With a strong reputation in the commercial truck industry, Cummins components are known for their quality, reliability, and performance, contributing to the efficiency and durability of commercial vehicles.

Cummins Rectangular Ring Seal (Part 3906252) Compatibility

The Cummins Rectangular Ring Seal (Part 3906252) is designed to ensure proper sealing in various engine applications. This seal is engineered to fit seamlessly with a range of Cummins engines, providing a reliable barrier against leaks and maintaining system integrity.

Compatible Engines

• 4B3.9
• 6B5.9
• 6C8.3
• B4.5 CM2350 B129B
• B5.9 GAS PLUS CM556
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 G CMOH6.0 B125
• D4.0 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F4.5 CM2620 F139B
• ISB CM550
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB4.5 CM2350 B104
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149
• ISB5.9G CM2180
• ISB6.7 G CM2180 B118
• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

Grouping of Compatible Engines

• 4B3.9, 6B5.9, 6C8.3: These engines are typically used in smaller applications and benefit from the precise sealing provided by the Rectangular Ring Seal.
• B4.5, B5.9, B6.7: These engines, often found in medium-duty applications, require robust sealing solutions to handle higher pressures and temperatures.
• D4.0, F3.8, F4.5: These engines, used in various industrial and agricultural applications, are designed to work under demanding conditions, making the Rectangular Ring Seal an essential component.
• ISB Series: The ISB engines, known for their versatility and performance, are compatible with the Rectangular Ring Seal, ensuring optimal sealing in both light and heavy-duty applications.
• ISBE Series: The ISBE engines, often used in construction and mining equipment, benefit from the precise sealing provided by the Rectangular Ring Seal, ensuring reliable operation in harsh environments.

Role of Part 3906252 Rectangular Ring Seal in Engine Systems

The 3906252 Rectangular Ring Seal is an essential component in various engine systems, ensuring optimal performance and reliability. Its application spans across multiple engine components, contributing to the overall efficiency and durability of the engine.

Compressor Systems

In compressor systems, the 3906252 Rectangular Ring Seal is utilized to create a tight seal between moving and stationary parts. This seal prevents air leaks, which can degrade compressor efficiency and lead to increased energy consumption. By maintaining a consistent seal, the compressor can operate at peak performance, ensuring reliable air delivery for various engine functions.

Full Engine Gasket Set and Gasket Kit

When incorporated into a full engine gasket set or gasket kit, the 3906252 Rectangular Ring Seal plays a vital role in maintaining the integrity of the engine’s sealing surfaces. These kits are designed to replace worn or damaged gaskets during an engine overhaul or repair. The ring seal ensures that there are no gaps between critical components, preventing coolant, oil, or air leaks that could compromise engine performance.

Lower and Upper Engine Gasket Sets

In both lower and upper engine gasket sets, the 3906252 Rectangular Ring Seal is employed to seal connections between the engine block, cylinder heads, and other critical components. This is particularly important in high-stress areas where temperature and pressure fluctuations are common. The seal helps maintain consistent pressure and temperature levels, contributing to the engine’s overall stability and efficiency.

Engine Installation and Overhaul Kits

During engine installation or overhaul, the 3906252 Rectangular Ring Seal is a key component in ensuring that all connections are properly sealed. Overhaul kits often include this seal to replace any worn or damaged parts, guaranteeing that the engine will function correctly upon reassembly. Proper sealing is essential for preventing leaks and ensuring that the engine operates within specified parameters.

Pump and Auxiliary Systems

In pump and auxiliary systems, such as vacuum pumps and subsets, the 3906252 Rectangular Ring Seal is used to maintain the integrity of fluid pathways. Whether it’s fuel, lubricants, or coolant, ensuring that these fluids remain contained within their designated pathways is essential for the efficient operation of these systems. The seal helps prevent contamination and ensures that the pump can deliver fluids at the required pressure and volume.

LWR ENG GSK (Sund) and PDC Applications

For lower engine gasket sets specified by Sund or other manufacturers, and in Powertrain Control Module (PDC) applications, the 3906252 Rectangular Ring Seal is integral. It ensures that all lower engine components, such as the oil pan, front and rear main seals, and timing cover, are properly sealed. This is particularly important in modern engines where precision and reliability are paramount.

Conclusion

The 3906252 Rectangular Ring Seal is a versatile component that enhances the performance and reliability of various engine systems. Its role in creating and maintaining seals across different engine components underscores its importance in ensuring that engines operate efficiently and effectively.