Ordering by number: this is P083094, which also shows up as 3310104289, the Chicago Pneumatic O-Ring. It keeps air or oil where it belongs inside the spike driver. Once it flattens or hardens, the machine loses pressure across the joint and performance falls off gradually rather than all at once.
Crowder’s breakdowns list this part on the CP 1290SPDR Spike Driver and CP 1240 1240S 1240SVR Paving Breaker, and on 1 other machine. 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 full diagram library indexes every breakdown we publish, and the Chicago Pneumatic tool range has the tools these parts go into. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: P083094
- Also listed as: 3310104289
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-P083094
- Listed on breakdowns for: CP 1290SPDR Spike Driver, CP 1240 1240S 1240SVR Paving Breaker, CP 1290 1290S 1290SVR Paving Breaker
