3348757
O-Ring Seal
Cummins®

Introduction

The Cummins 3348757 O-Ring Seal is a critical component in commercial trucks, designed to provide reliable sealing in various systems and components. This part ensures the containment of fluids such as coolant, oil, and fuel within their respective systems, contributing to the overall efficiency and reliability of the vehicle ¹.

Basic Concepts of O-Ring Seals

An O-Ring Seal is a circular cross-section gasket designed to create a seal between parts. Typically made from elastomeric materials like nitrile rubber, silicone, or fluorocarbon, O-Rings deform under compression to prevent fluid or gas passage ².

Role of the 3348757 O-Ring Seal in Truck Operation

This Cummins part ensures the integrity of seals in various systems, commonly in fuel injectors. It maintains the seal between the injector body and nozzle, ensuring efficient fuel delivery and contributing to engine performance and longevity. It is also used in other systems requiring a reliable seal to prevent fluid leakage and maintain system pressure ³.

Key Features

The 3348757 is crafted from high-quality elastomeric material, chosen for its durability and resistance to fluids and operating conditions. Its design ensures a snug fit, providing a robust barrier against fluid leakage. It features resistance to swelling, compression set, and temperature extremes, enhancing its performance in demanding environments.

Benefits

Using the 3348757 offers benefits such as improved system efficiency by containing fluids, reducing leak risks, and maintaining overall truck performance. Its longevity and reliability reduce the need for frequent replacements and repairs, making it a cost-effective solution for system integrity.

Troubleshooting and Maintenance

Common issues with O-Ring Seals include leaks from wear, damage, or improper installation. Troubleshooting involves inspecting the seal for wear or damage, ensuring proper seating, and checking for obstructions. Maintenance practices include regular inspection, replacement as needed, following manufacturer guidelines for installation, and ensuring compatibility with fluids and operating conditions.

About Cummins

Cummins Inc. is a global leader in designing, manufacturing, and distributing engines, filtration, and power generation products. Known for innovation and quality, Cummins has established itself in the commercial truck industry. The company’s focus on research and development and customer satisfaction has led to high-quality components like the 3348757, designed for demanding commercial truck applications.

Compatibility with Cummins Engines

The 3348757 is compatible with various Cummins engines, ensuring the integrity of fluid systems and preventing leaks. Below is an overview of the engines this part fits, grouped by series and model specifications.

ISB Series Engines

• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149

ISL Series Engines

• ISL CM554
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138

QSK Series Engines

• QSK60 G CM2358 K110
• QSL9 CM554
• QSL9 CM850 (CM2850)

KTA Series Engines

• KTA19GC
• KTA19GC CM558

X15 Series Engines

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

Understanding the compatibility of the 3348757 with these engines helps ensure equipment remains in optimal condition, reducing leak risks and maintaining system efficiency.

Role in Engine Systems

The 3348757 is integral to maintaining the integrity and efficiency of various engine components. It is used in the aftercooler to prevent coolant leaks, in the camshaft assembly to secure lubricants, in the fuel distributor to maintain fuel pressure, and in the fuel injection pump to ensure precise fuel metering. It also plays a role in the fuel pump, fuel pump assembly, fuel pump body, fuel pump head, fuel pump kit, liner kit, overhaul kit, performance parts, upper engine gasket kit, valve cover, XPI JV components, and XPI JV systems for Cummins HD and Scania HD, ensuring leak-proof connections and maintaining high-pressure fuel delivery.

Conclusion

The Cummins 3348757 O-Ring Seal is a vital component in commercial trucks, ensuring the integrity of fluid systems and contributing to engine efficiency and reliability. Its design, material properties, and compatibility with various Cummins engines make it a reliable and cost-effective solution for maintaining system integrity and performance.