This is Atlas Copco part number 9245998742 O-Ring – cylinder, stocked at Crowder Supply as AC-9245998742. It carries the piston and the port timing for the tool. Bore wear is gradual, so it is usually diagnosed by falling performance rather than a breakdown.
Give us the model and serial off your machine and we will confirm the fit; the parts breakdown index and the Atlas Copco catalog are the other two places to start. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 9245998742
- Manufacturer: Atlas Copco
- Crowder SKU: AC-9245998742