O-Ring & Seal Repair Kit carries American Pneumatic Tool part number 1280583878, which replaced the older number 18791 and is stocked here under APT18791. Kits like this group the parts that get replaced together, which saves ordering them one at a time and cuts a second teardown out of the job.
Crowder’s breakdowns list this part on the 131 Backfill Tamper. The complete machine is the APT 131 Pneumatic Backfill Tamper. 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.
Work through the rest of the assembly on the same breakdown, or start over from the parts diagram hub. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583878
- Previous part number: 18791
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT18791
- Listed on breakdowns for: 131 Backfill Tamper

