Genuine Bosch O‑ring, part number 1610210100 — a small but critical sealing ring designed for Bosch rotary hammers and related power tools. Common fitments include GBH 8/65 DCE, GBH 5/40 DCE, GBH 5 DCE, GBH 8 DCE and PBH 380, so it replaces worn or damaged seals in those models. The ring measures approximately 27.0 × 1.5 mm (outer diameter × cross‑section), made to Bosch specification to restore proper sealing and tool performance; Bosch power tool parts like this O‑ring are simple to fit during routine service. Perfect if you need a single, exact replacement to restore a leaking or pressure‑lossing assembly.

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