4995185
D Ring Seal
Cummins®

Introduction

The Cummins 4995185 D Ring Seal is a specialized component designed for use in commercial trucks. Its primary purpose is to provide a reliable seal in various systems within the truck, ensuring the integrity of fluid systems and preventing leaks. This seal is integral to maintaining the efficiency and performance of the truck’s systems.

Basic Concepts of D Ring Seals

D Ring Seals are mechanical seals characterized by their D-shaped cross-section. They function by creating a barrier that prevents the leakage of fluids or gases from a system. The design of a D Ring Seal typically includes a flexible lip that conforms to the mating surface, ensuring a tight seal under various operating conditions. These seals are commonly used in applications where dynamic sealing is required, such as in rotating or reciprocating machinery ¹.

Role of the 4995185 D Ring Seal in Truck Operation

The Cummins 4995185 D Ring Seal plays a specific role in the operation of commercial trucks by ensuring the integrity of seals in critical systems. It is often associated with fuel systems, hydraulic systems, and other fluid transfer mechanisms. By maintaining a secure seal, it contributes to the efficient operation of these systems, ensuring that fluids are contained and delivered as intended without leakage.

Key Features

The Cummins 4995185 D Ring Seal is distinguished by several key features that enhance its performance and durability. It is typically made from high-quality materials that offer resistance to wear, corrosion, and extreme temperatures. The design attributes of the seal, including its D-shaped profile and flexible lip, allow it to adapt to various surfaces and operating conditions. These characteristics ensure that the seal maintains its effectiveness over time, even under demanding conditions ².

Benefits

Using the Cummins 4995185 D Ring Seal offers several benefits. Its design contributes to improved sealing efficiency, reducing the risk of leaks and ensuring that systems operate at optimal levels. The durability and reliability of the seal mean that it can withstand the rigors of commercial truck operation, leading to reduced maintenance needs and longer service intervals. These benefits contribute to the overall performance and maintenance efficiency of the truck.

Troubleshooting and Maintenance

Common issues associated with D Ring Seals include wear, damage, and improper installation. Troubleshooting these issues involves inspecting the seal for signs of wear or damage, ensuring that it is correctly installed, and addressing any underlying causes of seal failure, such as misalignment or contamination. Regular maintenance practices, including periodic inspection and replacement as needed, are crucial for ensuring the longevity and effectiveness of the seal. Best practices for handling and installation involve careful handling to avoid damage and ensuring that the seal is properly seated in its application ³.

Compatibility

The Cummins D Ring Seal part number 4995185 is designed to fit seamlessly with a range of Cummins engines, providing a reliable seal that prevents leaks and maintains system pressure. Below is a detailed overview of the engines with which this part is compatible:

B Series Engines

• B4.5 CM2350 B129B
• B6.7 CM2350 B135B
• ISB4.5 CM2350 B104

F Series Engines

• F2.8 CM2620 F135B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

ISF Series Engines

• ISF2.8 CM2220 F117
• ISF2.8 CM2220 F129
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123

ISL Series Engines

• ISL9 CM2150 SN

QSF Series Engines

• QSF2.8 CM2880 F104
• QSF2.8 CM2880 F105
• QSF2.8 CM2880 F108
• QSF2.8 CM2880 F114

D Series Engines

• D4.0 CM2620 D103B

ISB6.7 G Series Engines

• ISB6.7 G CM2180 B118

QSB Series Engines

• QSB3.9 CM2880 B138

This D Ring Seal part is engineered to fit precisely within the specified engine models, ensuring optimal performance and longevity. It is essential to verify the compatibility of this part with your specific engine model to ensure proper fitment and function.

Role of Part 4995185 D Ring Seal in Engine Systems

The 4995185 D Ring Seal is an essential component in various engine systems, ensuring the integrity and efficiency of several key components.

In the compressor system, the D Ring Seal is utilized to maintain a secure seal between moving parts, preventing air leaks that could reduce efficiency and performance. Its placement in the compressor ensures that the pressurized air is effectively managed, contributing to the overall reliability of the system.

Within the air system, the seal plays a part in maintaining the purity and pressure of the air supply. By sealing connections and joints, it prevents contaminants from entering the system and ensures that the air pressure remains consistent, which is vital for the proper functioning of pneumatic components.

In the drain system, the D Ring Seal is employed to ensure that fluid drainage occurs without leaks. This is particularly important in systems where the accumulation of fluids could lead to corrosion or contamination of other engine components.

For the remote oil system, the seal is used to maintain the integrity of the oil supply line. It ensures that oil is delivered to various engine components without leakage, which is essential for lubrication and cooling purposes.

In conjunction with the lower engine gasket kit and lower engine gasket set, the D Ring Seal helps to create a robust seal between the engine block and other components. This is important for preventing oil and coolant leaks, which could lead to engine damage over time.

The oil pan and oil pan kit also benefit from the use of the D Ring Seal. It is often used to seal the connection between the oil pan and the engine block, ensuring that oil is contained within the system and does not leak out, which could lead to a loss of lubrication and potential engine seizure.

Similarly, the seal is used in the pan system to ensure that any fluids stored within are securely contained. This is important for both oil and coolant systems, where leaks could lead to system failure.

In the context of the oil system, the D Ring Seal is used to maintain the integrity of oil lines and connections. This ensures that oil is effectively circulated throughout the engine, providing necessary lubrication to moving parts and helping to dissipate heat.

Lastly, the seal is used with threaded plugs to ensure that any openings in the engine system are securely sealed. This is important for maintaining system pressure and preventing the ingress of contaminants.

Conclusion

Overall, the Cummins 4995185 D Ring Seal plays a significant role in ensuring the efficiency, reliability, and longevity of various engine systems by providing secure seals in critical applications. Its design and material properties contribute to its effectiveness in preventing leaks and maintaining system integrity under demanding conditions.