We are currently experiencing substantial delays with Hitachi/HiKOKI and Metabo spare parts due to the two brands merging warehouse. At this moment in time we are unable to provide confirmed delivery dates on out of stock parts, for any urgent requirements please contact us prior to ordering.
Hitachi 885316 — Original Hitachi O‑ring (I.D. 59.92 mm, cross‑section 3.53 mm). This genuine Hitachi sealing ring fits the cylinder/head area of gas/concrete strip nailers to restore a reliable pressure seal and stop leaks — an essential replacement when a nailer starts misfiring or losing power. The part is listed as the top O‑ring for Hitachi/Hikoki gas nailer assemblies and is supplied as the correct, ready‑to‑install sealing element.
Fits (examples): Hitachi NR90GC / NR90GC2 / NR90GR2 and compatible concrete/gas nailers such as NC40G / GNC40 — check your tool’s parts diagram for the 885‑316 reference to confirm exact placement.
Why choose this part: it’s the original Hitachi replacement specified for the nailer’s sealing system, sized at I.D. 59.92 mm with the industry standard 3.53 mm cross‑section for a precise fit. Easy to swap into the cylinder/head groove during routine repairs — a small part that restores dependable performance. This genuine Hitachi O‑ring is a common repair item among power tool parts for framing and concrete nailers.
