Original Bosch O‑ring — part number 1610210033 — precision seal ring sized 36.0 × 5.0 mm, designed to replace worn seals in Bosch demolition hammers.

Compatible with Bosch GSH 27 series demolition hammers (for example model 0611304103 / GSH 27 VC and 0 611 304 003 / USH 27), listed as sealing ring - position 27. Cross reference with the 10 digit version number to confirm fit. 

This genuine Bosch O‑ring is a small but critical item that restores proper sealing and helps prevent oil / air leaks — an easy-to-install spare when you need a single replacement from the parts for power tools inventory.

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