Genuine DeWalt 323711-34 — Ring, O: a small circular sealing O‑ring listed in DeWalt parts diagrams as "RING, O", intended to restore a tight seal inside the gearbox / rotary-hammer assembly.

This original DeWalt rubber O‑ring replaces worn or cracked seals that allow grease loss or dust ingress for Dewalt Models.

Example fitment: DCH213 , DCH253 , DCH254 , DC232KL , DC222KA and DW513 , DW515 , DW518 are among the DeWalt models shown to use part 323711-34 — check your model number against the parts list to confirm fit.

If you’re doing a quick repair this small, genuine DeWalt parts item is exactly the kind of direct replacement that stops leaks and restores proper function.

Compact and easy to install, it’s a common, low‑cost entry in parts for power tools maintenance kits for rotary hammers and drills.