O-Ring is the Atlas Copco service part carried under part number 3378512035. It seals a pressure joint inside the drill, 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.
The published breakdown lists it on the LCD 500 & LCD 1500 Hydraulic Core Drill and COR 5/15 Hydraulic Core Drill, and on 1 other machine. Check it against the reference number on the diagram first; serial breaks change what fits.
Use the parts diagram library to work through the rest of the assembly, or the Atlas Copco catalog if you are pricing a replacement machine. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 3378512035
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3378512035
- Listed on breakdowns for: LCD 500 & LCD 1500 Hydraulic Core Drill, COR 5/15 Hydraulic Core Drill, MHC5 Hydraulic Core Drill
