Original Makita 213283-5 — O‑Ring 18. This genuine Makita rubber sealing ring (listed as "O‑RING 18") is a small 18 mm nominal O‑ring used to seal the piston/striker/cylinder area in Makita rotary hammers and power scrapers.

Fits several Makita models include : HR3210C / HR3210FCT, HR3200C, HK1820 / HK1820L and HR3540C / HR3541FC — check these model parts breakdowns for the O‑RING 18 (part no. 213283-5) placement.

A straightforward, like‑for‑like replacement when that small seal has hardened or perished — sold as the original Makita spare (part no. 213283-5) and listed in Makita parts breakdowns as a single O‑RING 18.

Jump straight to the Makita spare parts diagrams:

• Makita HK1800 Parts
• Makita HK1820 Parts
• Makita HR3200C Parts
• Makita HR3210C Parts
• Makita HR3210FCT Parts
• Makita HR3540C Parts

Browse our full range of Makita hammer drill parts.