128085
O Ring Seal
Cummins®

Introduction to O Ring Seals

O ring seals are essential components in mechanical engineering, particularly in commercial trucks. These torus-shaped mechanical gaskets, made from elastomers or metal, are designed to create a seal between components to prevent fluid or gas leakage. Their versatility and reliability make them indispensable in various mechanical systems ¹.

The Role of the Cummins 128085 O Ring Seal

The Cummins 128085 O ring seal is crucial for the functionality of commercial trucks. Engineered to withstand the demanding conditions of truck engines, this seal is used in critical systems such as fuel and hydraulic systems. Its primary function is to maintain a secure seal in environments characterized by high pressure and temperature, ensuring the integrity of the system it serves ².

How the Cummins 128085 O Ring Seal Works

Functioning through compression between two surfaces, the Cummins 128085 O ring seal creates a tight seal. Constructed from high-quality synthetic rubber, it is designed to withstand the severe conditions prevalent in commercial truck engines. Even as the surfaces it seals against move relative to each other, the O ring seal remains in position, continuously providing a barrier against leaks ³.

Importance of the Cummins 128085 O Ring Seal in Truck Operations

The Cummins 128085 O ring seal is vital for the seamless operation of commercial trucks. By ensuring that fluids and gases are contained within their designated areas, it prevents leaks that could otherwise result in engine damage, diminished performance, and expensive repairs. Its resilience under high pressure and temperature underscores its essential role in truck operations ⁴.

Troubleshooting and Maintenance of the Cummins 128085 O Ring Seal

Consistent inspection and maintenance of the Cummins 128085 O ring seal are vital for its ongoing effectiveness. Detecting a leak may necessitate the replacement of the O ring seal. Moreover, proper installation and ensuring the cleanliness of the surfaces it seals against are critical to its function. Regular maintenance not only helps in preventing leaks but also extends the lifespan of the seal.

Cummins O Ring Seal Part 128085 Compatibility

The Cummins O Ring Seal part number 128085 is a critical component designed to ensure the integrity of various engine systems. This seal is engineered to fit seamlessly within a range of Cummins engines, providing essential sealing functions that prevent leaks and maintain system pressure.

Engine Compatibility

• 6C8.3, C8.3 G: These engines benefit from the O Ring Seal in maintaining the efficiency of their fuel and lubrication systems.
• ISB CM850, ISM CM570: Both these engines utilize the O Ring Seal in their complex fuel injection systems, ensuring precise sealing where required.
• K19, K38, K50: These engines incorporate the O Ring Seal in various components, including the fuel system and turbocharger areas, to prevent any leakage.
• L10 CELECT, L10 MECHANICAL: The O Ring Seal is used in these engines to maintain the integrity of the fuel and lubrication systems, ensuring optimal performance.
• M11 CELECT, M11 CELECT PLUS, M11 MECHANICAL: These engines rely on the O Ring Seal for critical sealing applications in both fuel and lubrication systems.
• N14 CELECT, N14 CELECT PLUS, N14 MECHANICAL: The O Ring Seal is integral to these engines, providing essential sealing in high-pressure fuel systems and other critical areas.
• NH/NT 855: This engine uses the O Ring Seal to maintain sealing in its complex fuel and lubrication systems.
• QSB6.7 CM850 (CM2850), QSK19 CM500, QSM11 CM570: These engines incorporate the O Ring Seal in various sealing applications, ensuring the prevention of leaks in high-pressure systems.
• V28, V903: The O Ring Seal is used in these engines to maintain the integrity of the fuel and lubrication systems.
• X15 CM2350 X116B: This engine utilizes the O Ring Seal in critical sealing applications, ensuring the prevention of leaks in high-pressure systems.

The O Ring Seal part number 128085 is designed to fit these engines with precision, ensuring that each engine operates efficiently and reliably. Its compatibility across a wide range of Cummins engines highlights its versatility and importance in maintaining the integrity of various engine systems.

Role of Part 128085 O Ring Seal in Engine Systems

The part 128085 O Ring Seal is integral to ensuring the efficient and reliable operation of various engine components. Its primary function is to create a secure seal, preventing leaks and maintaining system integrity. Here’s how it interfaces with the provided components:

1. Cylinder Air Compressor and 2 Cylinder Compressor Head The O Ring Seal is used in the cylinder air compressor and the 2 cylinder compressor head to seal the connections between the compressor body and the head. This ensures that compressed air does not escape, maintaining the efficiency and performance of the compressor.

2. Accessory Drive and Drive Accessory In the accessory drive system, the O Ring Seal is employed to secure connections within the drive mechanism. This prevents lubricant leakage and ensures smooth operation of the drive components.

3. Air Compressor Conversion Kit and Air Compressor Kit When installing an air compressor conversion kit or an air compressor kit, the O Ring Seal is crucial for sealing the various joints and fittings. This maintains the pressure within the system and prevents air loss.

4. Comp AR73807 Head 2420 and Compressor Head Overhaul Kit For the Comp AR73807 Head 2420 and during the overhaul of the compressor head, the O Ring Seal is used to ensure that all connections are leak-proof. This is essential for the reliable operation of the compressor head.

5. Compressor Air and Compressor Gasket Set In the compressor air system, the O Ring Seal works in conjunction with the compressor gasket set to create a robust seal around the compressor’s air passages. This ensures that the compressed air is delivered efficiently without any loss.

6. Compressor Head Repair Kit and Compressor Valve (Major) Kit When repairing the compressor head or replacing major valves, the O Ring Seal is used to ensure that all repaired or new components are securely sealed. This prevents air leaks and maintains system pressure.

7. Crankcase Breather and Crankcase The O Ring Seal is utilized in the crankcase breather system to seal the connections within the crankcase. This helps in managing crankcase pressure and preventing oil leaks.

8. CMPR and Fuel Pump In the CMPR system and the fuel pump, the O Ring Seal is essential for sealing fuel lines and connections. This ensures that fuel is delivered without leaks, maintaining the efficiency of the fuel system.

9. Head Air Compressor and Kit Compressor For the head air compressor and compressor kits, the O Ring Seal is used to ensure that all air passages and connections are sealed. This is vital for the efficient operation of the compressor.

10. SI Cyl Service, Oil Filter Cooler Head, and Overhaul Gasket Set During cylinder service, when using an oil filter cooler head, or during an overhaul with a gasket set, the O Ring Seal is employed to ensure all components are securely sealed. This prevents fluid leaks and maintains system integrity.

11. Pump Fuel, Repair Kit Compressor, Set Gasket, and Unloader Valve Kit In the fuel pump, compressor repair kits, gasket sets, and unloader valve kits, the O Ring Seal is used to ensure that all connections are leak-proof. This is essential for the reliable and efficient operation of these components.

Conclusion

The Cummins 128085 O Ring Seal is a critical component in the maintenance and operation of commercial trucks. Its role in preventing leaks, maintaining system integrity, and ensuring the efficient operation of various engine components cannot be overstated. Regular maintenance and proper installation of this part are essential for the longevity and reliability of commercial truck engines.