O-Ring, Atlas Copco part number 9245998299, listed at Crowder Supply as AC-9245998299. It keeps air or oil where it belongs inside the tool. Once it flattens or hardens, the machine loses pressure across the joint and performance falls off gradually rather than all at once.
If you are working from a machine rather than a part number, start at the parts breakdown index, or send us the model and serial and we will match it. Machines themselves are on the Atlas Copco lineup. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 9245998299
- Manufacturer: Atlas Copco
- Crowder SKU: AC-9245998299