O-Ring carries Chicago Pneumatic part number C084172, cross-referenced to 3310103917 and is stocked here under CP-C084172. It seals a pressure joint inside the saw, and because elastomer takes a set long before the metal around it wears, it is one of the first items to replace when a machine starts weeping air or oil.
You will find it on the diagram for the CP 0044 Concrete Saw and CP 0020 Sump Pump. Check it against the reference number on the diagram first; serial breaks change what fits.
The parts diagram hub indexes every breakdown we publish, and the Chicago Pneumatic lineup has the tools these parts go into. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: C084172
- Also listed as: 3310103917
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-C084172
- Listed on breakdowns for: CP 0044 Concrete Saw, CP 0020 Sump Pump

