CATERPILLAR 173-3390 Ring-Back Up 1733390

Caterpillar 173-3390 Ring-Back Up Seal – OEM-Grade Durability for Heavy Equipment

The Caterpillar 173-3390 Ring-Back Up is a precision-engineered sealing component designed specifically for a wide range of Caterpillar heavy machinery, including PTE-3512B engine generator sets, CH8-C7.1 industrial engines, and numerous excavator models such as the BKW-325C, MDY-318C, and SAH-320C FM. Manufactured from high-grade elastomeric materials combined with advanced metallurgy, this ring-back up seal ensures optimal sealing performance under extreme load conditions and high-pressure environments. Its robust design maintains integrity against hydraulic fluid leaks, preventing contamination and ensuring the longevity of drivetrain and hydraulic systems.

Technically, the 173-3390 ring-back up seal features precise dimensional tolerances tailored to fit Caterpillar’s complex sealing grooves, providing a reliable barrier against fluid migration. Its enhanced wear resistance and elasticity accommodate thermal expansion and contraction cycles common in heavy-duty operations. This seal supports operational efficiency by minimizing downtime due to hydraulic failures, improving machine reliability across excavators like the CXY-320D, DHK-320D, and JKF-324D FM models. The OEM-grade quality guarantees compatibility and performance that meets Caterpillar’s stringent engineering standards, making it an essential replacement part for maintaining peak equipment functionality.

For detailed specifications and to purchase the Caterpillar 173-3390 Ring-Back Up Seal, visit the official product page at 🔗 Caterpillar 173-3390 Ring-Back Up Seal | AllParts Expert. Ensure your heavy equipment operates at maximum efficiency with this critical sealing component designed for durability and superior performance in demanding industrial applications.