This is Chicago Pneumatic part number C086699, also listed as 3310103717 O-Ring, stocked at Crowder Supply as CP-C086699. 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 shows up in the parts breakdown for the CP 0020 Sump Pump.
If you need the parts around it, the parts diagram library has the full breakdown library, and the CP tool catalog covers the machines themselves. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: C086699
- Also listed as: 3310103717
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-C086699
- Listed on breakdowns for: CP 0020 Sump Pump
