Back up ring for Terex TX760B

The back up ring, part number 3443388M1, is a component used within the hydraulic system of the Terex TX760B backhoe loader. It is specifically utilized in the sideshift dipper cylinder manufactured by Pacoma. This ring serves to support dynamic seals, such as O-rings, preventing them from extruding out of their housing under high pressure conditions. By maintaining the position of the primary seal, it helps prevent fluid leakage and ensures the integrity of the hydraulic assembly during operation.

This component is compatible with the Terex TX760B model. It is designed to fit the specific dimensions and requirements of the Pacoma-manufactured dipper cylinder assembly. Proper installation of this ring is necessary to maintain the seal performance within the hydraulic circuit.

In hydraulic systems, back up rings are used alongside primary seals to manage pressure loads. They prevent seal deformation and extrusion, which can occur when the gap between mating surfaces is subjected to high hydraulic pressure. By providing a rigid support surface, the back up ring allows the primary seal to function effectively, which is necessary for the consistent operation of hydraulic cylinders in heavy machinery.