This is Chicago Pneumatic part number R086098, also listed as 3310103720 O-Ring, stocked at Crowder Supply as CP-R086098. 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.
Crowder’s breakdowns list this part on the CP 9RR 9RRS Rock Drill and CP 9 9S Rock Drill, and on 4 other machines. 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 rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram library. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: R086098
- Also listed as: 3310103720
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R086098
- Listed on breakdowns for: CP 9RR 9RRS Rock Drill, CP 9 9S Rock Drill, CP 9A 9F Rock Drill, CP 9BS Rock Drill, CP 0009 A F E CS ES AC Rock Drill, CP 0014 RR RRBS Rock Drill
