CATERPILLAR 109-5811 Tee-O-Ring Port 1095811

Caterpillar 109-5811 Tee-O-Ring Port – OEM-Grade Seal for Articulated Dump Trucks and Excavators

The Caterpillar 109-5811 Tee-O-Ring Port is a precision-engineered sealing component designed to maintain optimal hydraulic system integrity across a wide range of heavy equipment. Compatible with multiple Caterpillar models including L4D-735B, T4P-735B, L4E-740B articulated dump trucks, as well as 9LJ-311-A and 6GK-312-A excavators, this part ensures leak-free performance under demanding load conditions. Manufactured from high-grade elastomeric materials with superior resistance to heat, pressure, and chemical degradation, the 109-5811 O-ring port delivers exceptional durability and long service life in harsh operating environments.

Technically, the 109-5811 features a robust cross-sectional diameter optimized for secure sealing within hydraulic port assemblies. Its metallurgy and compound formulation are tailored to withstand fluctuating pressures and temperature extremes typical of drivetrain and hydraulic systems in heavy machinery. This tee-shaped O-ring port enhances system reliability by preventing fluid contamination and pressure loss, thereby improving overall equipment efficiency and reducing downtime. OEM-quality standards guarantee perfect fitment and compatibility, making it an essential replacement part for maintaining peak performance in Caterpillar articulated dump trucks, excavators, engine-generator sets, and expanded mining products.

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