O-Ring, Chicago Pneumatic part number P103521 (also carried as 3310104646), listed at Crowder Supply as CP-P103521. It keeps air or oil where it belongs inside the rock drill. Once it flattens or hardens, the machine loses pressure across the joint and performance falls off gradually rather than all at once.
It appears on the CP 32A B B-O Rock Drill and CP 1230 1230S 1230SVR Paving Breaker, and on 6 other machines 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.
The parts diagram hub indexes every breakdown we publish, and the CP tool catalog has the tools these parts go into. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: P103521
- Also listed as: 3310104646
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-P103521
- Listed on breakdowns for: CP 32A B B-O Rock Drill, CP 1230 1230S 1230SVR Paving Breaker, CP 1240 1240S 1240SVR Paving Breaker, CP 0117 0117S Paving Breaker, CP 1230 SPDR 1230S SPDR Spike Driver, CP 0032 Rock Drill, +2 more
