L118978 Upper Joint Seal for Construction Machinery Repair Kit
Product Overview
As a specialized manufacturer of precision sealing components, our factory proudly presents the L118978 Upper Joint Seal. This critical aftermarket seal is engineered to maintain the integrity of upper articulation joints and central joints in a wide range of heavy construction equipment, including models from New Holland, Case, Caterpillar, JCB, and Volvo. The articulation joint is fundamental to the maneuverability and stability of machinery like wheel loaders, backhoes, and excavators, allowing for flexible movement between chassis sections. A compromised seal in this area can lead to contamination ingress, lubricant leakage, and premature wear of vital components, severely impacting machine performance and safety. Our L118978 seal is meticulously manufactured to provide a robust barrier against dirt, moisture, and debris, while effectively retaining lubricants within the joint. This commitment to quality ensures maximized equipment uptime and reduced long-term maintenance costs for wholesale distributors, repair facilities, and large construction fleets seeking dependable components directly from a trusted factory. We focus on delivering seals that meet or exceed OEM specifications, ensuring your heavy machinery operates reliably in the most demanding environments.
Technical Specifications
Specification | Detail |
Part Number | L118978 |
Applicable Equipment | New Holland, Case, Caterpillar, JCB, Volvo (various models with upper articulation or central joints) |
Application Type | Upper Articulation Joint Seal, Central Joint Upper Oil Seal |
Dimensions (Typical) | 79.38mm ID x 108.05mm OD x 12.7mm Thickness |
Condition | New, High-Quality Aftermarket |
Material Composition | High-performance elastomers (e.g., NBR, FKM) for durability and resistance to wear and environmental factors |
About L118978 Seal
Upper Joint Seal (L118978) | Forms a critical barrier to prevent lubricant leakage and contaminant ingress in articulation/central joints. |
(Other related seals/O-rings) | May include supplementary O-rings or seals depending on specific joint design, ensuring comprehensive sealing. |
Core Advantages
•Optimized Joint Protection: Specifically designed to safeguard critical articulation and central joints from wear and contamination.
•Enhanced Machine Maneuverability: Maintains smooth and responsive joint movement, crucial for operational efficiency and control.
•Superior Durability: Manufactured from industrial-grade materials for exceptional resistance to abrasion, environmental factors, and operational stresses.
•Long-Term Cost Savings: A reliable aftermarket solution that extends the lifespan of expensive joint components and reduces repair frequency.

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