Original Bosch sealing O‑ring, part number 1610210008 — a small, precision rubber seal (approx. 17.3 × 17.7 mm) used to restore correct piston/striker sealing in Bosch demolition hammers. Made to Bosch specification from a durable, oil‑resistant elastomer, it prevents grease and air leaks that can reduce impact force and accelerate wear, and it’s supplied as the original Bosch replacement for affected seal locations.

Fits (examples): Bosch GSH 27, GSH 27 VC, GSH 16‑28, USH 27 and related HSH/ BH demolition‑hammer variants. This genuine Bosch spare part is an exact‑fit sealing ring suited for repair or routine service — easy to swap into the seal groove during disassembly to get the hammer running properly again.

This small but critical Bosch power tool parts item is sold per piece and is the correct seal called out in Bosch power tool parts lists for the above models.

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