Back-up ring for Palfinger PK10500

The ER314 back-up ring serves as a support component within the hydraulic cylinders of the Palfinger PK10500 articulated crane. It is positioned behind the primary dynamic seal, such as an O-ring or rod seal, to prevent the seal material from deforming or extruding into the clearance gap between mating surfaces when the system is under high pressure. By providing this rigid support, the ring helps maintain the shape and integrity of the primary seal during operation.

This component is compatible with the Palfinger PK10500 crane, specifically for use within its hydraulic actuators, including boom cylinders and stabilizers. Proper installation of this ring ensures that seals remain effective, which is necessary for the controlled movement of the crane components and for preventing fluid leakage within the hydraulic circuit.

In hydraulic systems, back-up rings are typically used in applications where high pressure or large clearances could cause seal failure. They act as a mechanical barrier that allows the primary seal to function within its intended parameters, ensuring the system maintains pressure and operates without internal or external fluid bypass.