O-Ring, Atlas Copco part number 0663212500, listed at Crowder Supply as AC-0663212500. It seals a pressure joint inside the pusher leg, and because elastomer takes a set long before the metal around it wears, it is one of the first items to replace when a machine starts weeping air or oil.
It is called out in the parts diagram for the BBC 34W WS Pusher Leg Drill and RH 658L/LS/LS-01 Rock Drill, and on 3 other machines. Compare it to the reference callout on the diagram to be sure it is the position you need.
Use the parts diagram hub to work through the rest of the assembly, or the Atlas Copco lineup if you are pricing a replacement machine. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 0663212500
- Manufacturer: Atlas Copco
- Crowder SKU: AC-0663212500
- Listed on breakdowns for: BBC 34W WS Pusher Leg Drill, RH 658L/LS/LS-01 Rock Drill, BBD 94W 94WS 94WE Rock Drill, BBC 34DSI Rock Drill, BBC 16W WS Pusher Leg Drill
