Makita 213798-2 — Original Makita O‑ring (nominal "O‑Ring 47") that seals the impact/hammer barrel assembly. Supplied as the single sealing ring called out in Makita parts diagrams (qty 1), this genuine Makita replacement sits with the impact bolt/barrel components to keep the cylinder sealed and maintain proper impact performance.
Fits (examples from Makita parts diagrams): HM1812, HM1802, and HM004G cordless breaker models. If your breaker’s parts diagram lists "O‑RING 47" or part 213798-2, this is the exact original Makita ring to match that location.
Details at a glance:
- Part: 213798-2 (O‑RING 47).
- Nominal diameter designation: 47 mm (listed by Makita as “O‑RING 47” in the parts breakdown).
This is the genuine Makita sealing ring specified for those breaker assemblies that restores the original sealing function.
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