Bosch 1610210206 — Genuine Bosch sealing ring (Dichtring), part no. 1 610 210 206. This is a 63.0 x 5.0 mm seal ring used as the dust/oil seal in the rotary-hammer assembly; it replaces the worn lip seal that lets grit or lubricant migrate into the gearbox or bearing area and is sold as a single replacement ring.

Fits many Bosch SDS-plus and cordless rotary-hammer models — for example GBH 18V‑26 (and 18V‑26 F), GBH 3‑28 DFR / DRE, GBH 36 V‑LI Plus and similar GBH series units — check the exploded-parts diagram for the matching position (often listed as position 55).

Why this part matters: replacing the 1610210206 sealing ring restores the tool’s internal protection against dust and oil loss, preventing premature wear of bearings and gears so the hammer runs quietly and reliably again. This is an original Bosch spare part made to the factory dimensions and fit.

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