When performing a professional engine rebuild or routine maintenance, the integrity of your sealing system determines the longevity of your equipment. The 6V-5778 (also searched as 6V5778) is a critical component designed to meet the rigorous demands of heavy-duty hydraulic and engine systems. As a trusted supplier of Caterpillar compatible parts, we ensure that every seal provides a leak-proof fit for your fleet.
This 6V-5778 Seal O-Ring is engineered specifically for high-pressure environments. Below are the detailed specifications for procurement and technical verification.
| Field | Product Details |
|---|---|
| Part Number | 6V-5778 / 6V5778 |
| Model NO. | Compatible with CAT 320B, 320D, 330C, D6R, 950G, 3126B Engine |
| Product Name | Heavy Duty Seal O-Ring |
| Condition | Brand New, OEM Standard Replacement |
| MOQ | 1 Piece (Bulk Discounts Available) |
| Stock Status | In Stock / Fast Dispatch Within 24 Hours |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery | DHL, Fedex, EMS, UPS, Air or Sea Freight |
| Application | Engine Rebuild, Overhaul, Hydraulic System Maintenance |
Not all seals are created equal. For operators looking for reliability without the inflated costs, our 6V-5778 Supplier solutions offer the perfect balance.
| Feature | Our OEM Standard 6V-5778 | Generic Market Substitutes |
|---|---|---|
| Material Composition | High-Fluorocarbon (Viton) / Nitrile Hybrid | Standard Rubber (Prone to swelling) |
| Temperature Range | -40°C to 200°C Resistant | Limited to 100°C |
| Fitment Precision | 100% Match to 6V5778 Dimensions | Variable tolerances (Risk of leaks) |
| Chemical Resistance | Resistant to Diesel, Oil, and Coolant | Degrades quickly in harsh fluids |
| Service Life | Designed for Full Overhaul Cycles | Frequent replacement required |
| Identity | Trusted by Repair Shops & Fleets | Unbranded / Low Traceability |
Not sure how this issue affects your equipment?
Our technical team helps operators avoid costly downtime by providing expert guidance on part selection and system diagnostics.
Identify potential risks during scheduled maintenance before they become catastrophic failures.
Recommend suitable replacement parts if needed to ensure 100% system compatibility.
Support both inspection advice and parts supply for global shipping.
Q: My 330C Excavator hydraulic joint is leaking at the 6V-5778 location. What is the cause?
A: Leakage usually occurs due to thermal hardening or improper seating during the last overhaul. Replacing with an OEM-standard tri-metal structure or high-grade fluorocarbon seal ensures the joint remains flexible under high pressure.
Q: Is the 6V5778 compatible with other engine brands like Cummins or Komatsu?
A: While the 6V-5778 is a primary part number for Caterpillar systems, we provide cross-reference services for Cummins, Komatsu, and Isuzu engines to find the exact dimension equivalent for your specific application.
Q: Why Choose This Seal O-Ring?
A: It features an OEM-standard structure and is trusted by repair shops and equipment fleets worldwide for its superior durability in extreme environments.
Complete the form below to receive pricing and availability for 6V-5778 and other engine parts.
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