This is the Atlas Copco seal washer part number 0661100090, cross-referenced to 3377016019, Crowder SKU AC-0661100090. Seals like this one are consumables in a power pack they are cheap, they age with heat and hours, and replacing the whole set during a teardown saves a second strip-down later.
You will find it on the diagram for the PAC P18 Twin E11 Twin Hydraulic Power Pac and LP 9-20P 9-20E Hydraulic Power Pac, and on 5 other machines. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
If you need the parts around it, the parts diagram hub 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: 0661100090
- Also listed as: 3377016019
- Manufacturer: Atlas Copco
- Crowder SKU: AC-0661100090
- Listed on breakdowns for: PAC P18 Twin E11 Twin Hydraulic Power Pac, LP 9-20P 9-20E Hydraulic Power Pac, LP 13-20 DEL Hydraulic Power Pac, LP 13-30P Hydraulic Power Pac, LP 18-2×20/1×40 Twin PE Hydraulic Power Pac, PAC P9 Hydraulic Power Pac, +1 more
