This is Chicago Pneumatic part number S087190, cross-referenced to 3310103966 retainer ring, stocked at Crowder Supply as CP-S087190. It holds the working steel in the pump. Retention hardware is a wear and safety item a stretched or cracked retainer lets the steel move, which chews the front head.
You will find it on the diagram for the CP 0010 Centrifugal Pump. Check it against the reference number on the diagram first; serial breaks change what fits.
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. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: S087190
- Also listed as: 3310103966
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-S087190
- Listed on breakdowns for: CP 0010 Centrifugal Pump
