This is Atlas Copco part number 9245998040 O-Ring, stocked at Crowder Supply as AC-9245998040. It keeps air or oil where it belongs inside the tamper. Once it flattens or hardens, the machine loses pressure across the joint and performance falls off gradually rather than all at once.
It is called out in the parts diagram for the TEX 640 Backfill Tamper and CP 0035 Backfill Tamper. 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.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the full diagram library. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 9245998040
- Manufacturer: Atlas Copco
- Crowder SKU: AC-9245998040
- Listed on breakdowns for: TEX 640 Backfill Tamper, CP 0035 Backfill Tamper
