Original Makita 213009-5 — O RING 4: a small rubber sealing ring (listed as "O RING 4" in Makita parts diagrams) that seals the wheel-cover/guard area on several Makita angle grinders to keep dust, debris and grinding residue out of the flange and bearing area.

This genuine Makita replacement fits a range of grinders and related assemblies — example models include DGA463, DGA417, DGA456Z, GA4030/GA4030R, GA5030 and tools that use the KP0810 wheel-cover configuration.

Sold as the single sealing ring, the part is a simple push‑in rubber O‑ring that’s quick to swap during a guard or flange service. Add this original Makita seal to your parts for power tools inventory when you need a precise, direct-fit replacement to restore proper sealing and tool reliability.

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