This is the American Pneumatic Tool O-ring – seal #2-021 part number 1280582568, previously 01269, Crowder SKU APT1269. 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.
The published breakdown lists it on the 133 Rivet Buster and 1133 Rivet Buster, and on 4 other machines.
Use the parts breakdown index to work through the rest of the assembly, or the American Pneumatic Tool range if you are pricing a replacement machine. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 1280582568
- Previous part number: 01269
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT1269
- Listed on breakdowns for: 133 Rivet Buster, 1133 Rivet Buster, 633 Rivet Buster, 633 133 1133 CN Rivet Buster, 160 Paving Breaker, 160A Airgo Paving Breaker

