Seal for LeTourneau PCM-120

The seal LT:058-8740 functions as a barrier between two surfaces within the machinery. It prevents the escape of hydraulic or pneumatic fluids and blocks the ingress of external contaminants into the system. By maintaining a tight interface, this component supports the operational pressure required for the correct function of the machine's fluid-handling systems.

This part is compatible with the LeTourneau PCM-120 ASM crane, specifically for build/model 2146029. It is utilized in various strategic locations throughout the crane, including hydraulic cylinders, pumps, and valve assemblies, where it manages the interface between moving parts under pressure. Proper installation of this seal helps maintain the integrity of the hydraulic or pneumatic circuit.

In heavy machinery, seals serve to contain pressurized fluids and protect internal components from environmental debris. They are used in assemblies where reciprocating or rotating motion occurs, ensuring that the system retains its working fluid while excluding dust, moisture, and other particulates that could otherwise cause internal damage to cylinder walls or bearing surfaces.