O-Ring carries American Pneumatic Tool part number 1280179549, which replaced the older number 19443 and is stocked here under APT19443. It keeps air or oil where it belongs inside the rivet buster. Once it flattens or hardens, the machine loses pressure across the joint and performance falls off gradually rather than all at once.
The published breakdown lists it on the 133CN T-Handle Rivet Buster and 1133CN T-Handle Rivet Buster. That machine is the APT 133 Pneumatic Rivet Buster if you are pricing a replacement rather than a repair. Pull up the diagram and confirm the reference number for your serial before ordering.
Need the parts around it? They are on the same breakdown, and the parts diagram hub covers every machine we publish. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 1280179549
- Previous part number: 19443
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT19443
- Listed on breakdowns for: 133CN T-Handle Rivet Buster, 1133CN T-Handle Rivet Buster
