PERMCO 5000 RING SEAL

For Permco 5000 series hydraulic gear pumps and motors, this is the direct-fit ring seal meant to replace the original sealing element and keep the unit from leaking internally or externally under hydraulic pressure.

Correct, this ring seal is specifically designed to fit Permco 5000 series hydraulic gear pumps and motors. It's a direct replacement.

For leakage between mating surfaces on a 5000 series unit, yes, that's exactly what this seal addresses. It's a direct-fit replacement sourced from Permco, so it's built to the same specs as what came in the unit originally. If you're cross-referencing, it also goes by part number C1DD70, which can help if you're pulling an old parts list.