Packing, Atlas Copco part number 3121553100, listed at Crowder Supply as AC-3121553100. Its job is to hold the pressure boundary between two mating faces; a hardened or nicked seal shows up as lost power and a damp housing well before anything else fails.
The published breakdown lists it on the RH 658L/LS/LS-01 Rock Drill. The tool itself is the RH 658 L Surface Rock Drill. Check it against the reference number on the diagram first; serial breaks change what fits.
Everything else on that machine is one page away, and the parts diagram library indexes every breakdown we publish. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 3121553100
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121553100
- Listed on breakdowns for: RH 658L/LS/LS-01 Rock Drill
