Genuine DeWalt N430472 — O‑ring replacement for DWS773 / DWS774 mitre saws.

This original DeWalt N430472 is a small rubber O‑ring is essential for maintaining internal pressure, preventing air or fluid leaks, and cushioning crucial moving parts within the saw’s assembly housing. 

Fitted to the deflector assembly, the ring restores a tight dust seal so debris stays out of moving parts and the mechanism runs cleanly; it’s the exact DeWalt spare called out on the parts diagram for those models.

Compact and simple to fit — remove the deflector, replace the ring, and reassemble — it’s a straightforward part to carry in a kit of essential power tool parts for quick repairs.