0.21" CS X 2.1" ID 氟橡膠FKM O型環 | AS568-330 | Dash 330 | 硬度90 (30個/包)

I needed o-rings that could handle high heat near my engine bay, and these Viton ones are holding up perfectly after a few weeks. The 90 durometer feels solid but seals well, no leaks so far.

These fit perfectly into my hydraulic manifold ports where standard Buna-N rings kept failing. The 400°F temp range gives me confidence they’ll hold up under the heat from our continuous-duty pump cycles.

The 90 durometer rating on these seals is exactly what I needed for a hydraulic application that sees constant pressure cycling. They seated perfectly in the groove without any deformation, and the Viton material gives me confidence it'll hold up around 200°F.