Cummins O Ring Seal 3678925 – Dependable Sealing for Heavy-Duty Engines
The Cummins O Ring Seal 3678925 is designed to deliver reliable, leak-free performance in high-pressure and high-temperature engine environments. Whether you’re replacing worn seals or performing routine maintenance, this genuine part ensures consistent sealing to keep your engine systems running smoothly.
Because it meets strict OEM standards, this O-ring works seamlessly with various Cummins parts. Furthermore, it helps extend the life of your components by preventing fluid loss and pressure drops—two common causes of engine failure.
📦 Specifications
- Part Number: 3678925
- Part Name: O Ring Seal
- Material: Premium elastomer (resistant to oil and heat)
- Color: Black
- Shape: Circular cross-section
- Condition: Brand New
- Category: Engine Seals & Gaskets
- Standard: OEM-compliant
- Compatibility: Fits multiple Cummins genuine parts assemblies
✅ Key Features
- Seals securely under heat and pressure
- Helps prevent oil, coolant, or air leaks
- Flexible and durable rubber construction
- Easy to install and replace
- Fully compatible with Cummins parts systems
🔧 Technical Insights
To begin with, the Cummins 3678925 O Ring Seal is manufactured from high-grade rubber compounds that resist swelling, cracking, and hardening.
Additionally, the ring’s exact sizing ensures a tight fit, helping to maintain internal system pressure.
Over time, seals can degrade—but this one is made for extended performance.
Moreover, its seamless design minimizes installation error and enhances reliability across Cummins genuine parts systems.
💡 Application Scenarios
The 3678925 O Ring Seal is ideal for:
- 🔹 Fuel, oil, or coolant line sealing
- 🔹 Engine overhauls requiring leak-proof sealing
- 🔹 Routine service on diesel platforms using Cummins parts
- 🔹 Turbo systems and other pressure-sensitive components
- 🔹 Industrial and automotive applications needing OEM-grade seals
🚚 Availability
This O-ring seal is in stock and available for worldwide shipping.
To ensure it’s the right match for your system, simply provide your engine serial number (ESN). Our team is ready to help verify fitment and ensure smooth integration into your Cummins genuine parts setup.
