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DeWalt 9R189926 is an OEM O-ring replacement manufactured by DeWALT for compatible nailers, specifically listed to fit the Bostitch 651S5 (16 GA - 7/16" construction stapler). The component serves as a small sealing gasket used in pneumatic tool assemblies and spare-part kits. It is referenced by product codes and ERP/Fix numbers across parts catalogs.
OEM DEWALT O-ring (MPN 9R189926) for Bostitch 651S5 nailer seals
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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