This is Tamco/Toku part number 410460140 valve seat, stocked at Crowder Supply as TK-410460140. Cycle timing runs through this component. Because it shuttles on every blow, it accumulates cycles faster than almost anything else in the rivet buster.
The published breakdown lists it on the RB 90 91 Rivet Buster and RB 90D 91D Rivet Buster. 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.
Everything else on that machine is one page away on the full diagram library; complete tools are on the Tamco/Toku lineup. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 410460140
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-410460140
- Listed on breakdowns for: RB 90 91 Rivet Buster, RB 90D 91D Rivet Buster
