Makita 213707-1 — O‑Ring 65 (genuine Makita)
Replace the worn seal with this genuine Makita O‑ring labeled "O RING 65" — a durable rubber sealing ring with a nominal 65 mm diameter, designed to restore proper piston/cylinder sealing in hammer and demolition hammer assemblies.
This part is used in a range of Makita rotary and demolition hammers; examples include DHR400 (DHR400ZK), HR4013C, HR1820 / HM1100C / HM1130 and HM1303 / HM1303B / BO6050. (Fits may vary by revision — check the parts breakdown for your model.)
Supplied as a single original Makita sealing ring, it slips into the cylinder/liner area to stop air and oil leaks and help return impact performance to specification — a simple, direct replacement for worn seals.
If you need a genuine Makita replacement to finish a repair quickly, this 213707-1 O‑Ring 65 is the correct choice; it’s a common item across Makita spare parts lists and service breakdowns.
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