This is Chicago Pneumatic part number R154983, which also shows up as 3310190233 O-Ring, stocked at Crowder Supply as CP-R154983. Seals like this one are consumables in a breaker they are cheap, they age with heat and hours, and replacing the whole set during a teardown saves a second strip-down later.
It appears on the CP 1240 1240S 1240SVR Paving Breaker breakdown. Pull up the diagram and confirm the reference number for your serial before ordering.
If you need the parts around it, the parts diagram hub has the full breakdown library, and the Chicago Pneumatic tool range covers the machines themselves. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: R154983
- Also listed as: 3310190233
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R154983
- Listed on breakdowns for: CP 1240 1240S 1240SVR Paving Breaker
