2366368 Hydraulic Cylinder Seal Kit for CAT 318C, 320C, 330C Bucket Cylinder 2836132

Two numbers usually bring people here: 2366368 and 2836132. Both point to the same bucket cylinder seal kit for the CAT 318C, 320C, and 330C.

The bucket cylinder is the one doing the digging, so it takes the shock, the grit, and the constant cycling. When the wiper stops blocking dust, the rod seal wears, and the bucket starts to drift, lose breakout force, or leave oil on the rod. That’s the repair this kit covers — rod, piston, and static sealing points.

Seals are PU and NBR. PU handles the pressure lips and sliding wear. NBR takes the oil-side and static spots. Profiles are molded to OEM groove dimensions, so they seat without trimming or stretching. Seal kit only — barrel, rod, and piston are not included.

Before ordering, check the machine serial and cylinder part number. The 318C, 320C, and 330C can run more than one bucket cylinder setup, so the model name alone may not be enough.