Bosch O-ring 20,35x1,78 MM - 1600210055

1600210039 supersedes older part numbers: 1600210055

Original Bosch sealing O‑ring — part no. 1600210039. Precision elastomer ring specified at 20.35 mm (inner diameter) × 1.78 mm (cross‑section), made to the original Bosch fit and tolerances for use in the tool’s spindle/gear sealing locations.

Ideal when a worn or damaged seal is letting dust or debris into the gearbox/spindle area. The ring is used across Bosch angle‑grinder and related GWS tool

Bosch models this part is commonly listed for ( check your 10 digit version number from the side of the tool’s to confirm fit of  O-Ring 20.35 × 1.78 mm dimension):

- GWS 7‑115 series (compact 115 mm grinders).

- GWS 9‑125 and GWS 10‑125 series.

- GWS 14‑125 / GWS 14‑150 series.

- GWS 15‑125 / GWS 17‑125 series.

- Larger GWS 20‑230 / GWS 24‑230 and other GWS 20–26 series grinders.

What you get: the original Bosch part no. 1600210039 ready to seat into the factory groove — correct metric sizing for a direct fit, so you restore the intended dust and lubrication seal without trimming or modification.

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