CATERPILLAR 105-7393 Ring-Backup 1057393

CATERPILLAR 105-7393 Ring-Backup – OEM-Grade Durability for Excavator Sealing Systems

The CATERPILLAR 105-7393 Ring-Backup is a precision-engineered component designed to enhance the sealing integrity of various Caterpillar excavator models, including the 6YM-315-A L, 3ZM-315-A, 4YM-315-A, 9SR-317 N, 9SR-317-A N, 4MM-317-A, and 6XM-315. Manufactured from high-grade elastomeric materials combined with advanced metallurgy, this ring-backup ensures optimal resistance to wear, pressure, and extreme load conditions within the drivetrain and hydraulic systems. Its exact dimensions conform to OEM specifications, guaranteeing a perfect fit and reliable performance under demanding operational environments.

Technically, the 105-7393 Ring-Backup functions as a critical secondary seal, supporting primary sealing elements by preventing extrusion and maintaining pressure containment in excavator hydraulic cylinders. Its robust design withstands high-temperature fluctuations and abrasive contaminants, significantly reducing downtime and maintenance costs. By maintaining hydraulic fluid integrity and preventing leakage, this ring-backup contributes to the overall efficiency and longevity of Caterpillar excavators, making it an indispensable spare part for heavy equipment maintenance professionals seeking OEM-grade quality and durability.

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