3,5x22 MM

Original Bosch O‑Ring (part number 1610210163) — a small, precision sealing ring used inside Bosch rotary/hammer drills to restore proper sealing around the piston/gear housing and prevent oil or air loss.

Key details:

- Part: O‑Ring, Bosch 1610210163 (original Bosch).

- Size: 22.0 mm inner diameter × 3.5 mm cross‑section (22 × 3.5 mm).

- Application: service seal for the piston/gear/striker area in rotary hammers and demolition hammers — replaces worn seals that cause loss of hammer action or oil leakage.

Example Bosch models this part is listed to fit (representative): 11240, 11241EVS, 11247, 11248EVS, GBH 5‑38, GBH 5‑38D, GBH 5‑38X, GBH 5‑40DE and related GSH/GBH series rotary/demolition hammers. (Check your tool’s 10 digit version number to confirm fit.)

Why this part matters: it’s the exact Bosch replacement ring sized for the tool’s sealing grooves — installing the correct 22 × 3.5 mm ring restores proper internal pressure and lubrication paths so the hammer action and longevity return to specification.

If you need the single sealing ring that matches the factory specification for the listed Bosch rotary and demolition hammers, this original Bosch 1610210163 is the direct-fit part.

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