Hitachi 338160 Spare Part - O-RING (A)

Hitachi 338160 — O‑ring (seal) for rotary hammer

Restore lost impact power and stop oil/air seepage with this genuine Hitachi O‑ring (part no. 338160). This resilient rubber sealing ring sits inside the hammer’s sealing system to maintain internal pressure for consistent striking performance and to prevent lubricant and air leaks that cause reduced impact force or erratic operation. It’s a direct, like‑for‑like replacement made to the original Hitachi specification and is intended for the sealing/piston area of the rotary hammer mechanism.

Key details

- Part: O‑ring (seal), Hitachi part number 338160.

- Material: durable elastomer (rubber) formulated for vibration and oil resistance in power‑tool environments.

- Function/location: seals the hammer/piston chamber to hold pressure and retain lubricant, curing loss of impact or visible oil mist.

- Fitment: listed to fit Hitachi/Hikoki DH52ME and DH52MEY rotary hammer models.

- Supply: sold individually for straightforward servicing during an overhaul or targeted repair.

If you keep a small stock of Hitachi spare parts for your tools, this genuine Hitachi 338160 is a low‑cost, high‑value item to restore a DH52ME/DH52MEY that shows leakage or reduced striking power.