O-Ring, Atlas Copco part number 3371814751, listed at Crowder Supply as AC-3371814751. It seals a pressure joint inside the rock 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.
It shows up in the parts breakdown for the RDR 48R Rock Drill and RDR 48M Rock Drill, and on 10 other machines. Pull up the diagram and confirm the reference number for your serial before ordering.
If you need the parts around it, the full diagram library has the full breakdown library, and the Atlas Copco tool range covers the machines themselves. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3371814751
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371814751
- Listed on breakdowns for: RDR 48R Rock Drill, RDR 48M Rock Drill, MH 11 Hydraulic Paving Breaker, MDR 30T Hydraulic Post Driver, LH 18 19E Hydraulic Paving Breaker, LH180 190E Hydraulic Paving Breaker, +6 more

