O-Ring, Chicago Pneumatic part number C079489, which also shows up as 3310103918, listed at Crowder Supply as CP-C079489. 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.
It appears on the CP 0020 Sump Pump and CP 32A Model L Rock Dril breakdown. 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 breakdown index has the full breakdown library, and the Chicago Pneumatic lineup covers the machines themselves. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: C079489
- Also listed as: 3310103918
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-C079489
- Listed on breakdowns for: CP 0020 Sump Pump, CP 32A Model L Rock Dril
