Makita O RING 8 BTM40/50/HM0871C - 213030-4
Genuine Makita part 213030-4 — listed as "O RING 8" — is a precision 8 mm sealing O‑ring used to restore tight, leak‑free operation where a small shaft, valve or housing seal is required.
This original Makita O‑ring is shown in service and exploded parts diagrams for multiple Makita tools, including rotary hammers and nailers — examples include HR3210C and HR4511C (rotary hammer lists), AN451 (roofing air nailer) and RP2300FC (parts breakdowns show item 213030-4).
Easy to install into the factory groove, the 213030-4 restores proper sealing tolerances so moving parts operate smoothly again; it’s a reliable, genuine Makita replacement when you need a simple, direct repair and a sensible addition to your Makita spare parts collection.
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