Ordering by number: this is 1280583452, previously 02074, the American Pneumatic Tool O-ring – seal #2-114. 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.
You will find it on the diagram for the 138 Rock Drill and 155 Rock Drill, and on 3 other machines. Compare it to the reference callout on the diagram to be sure it is the position you need.
The parts breakdown index indexes every breakdown we publish, and the American Pneumatic 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: 1280583452
- Previous part number: 02074
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT2074
- Listed on breakdowns for: 138 Rock Drill, 155 Rock Drill, 133 4-Bolt Rivet Buster, 115 Rock Drill, 137 Rock Drill
