حلقات O من HNBR بقطر خارجي 0.21 بوصة × قطر داخلي 4.725 بوصة | AS568-350 | داش 350 | صلابة 90 (5 / عبوة)

The 90 durometer on these HNBR rings is exactly what I needed for a hydraulic fitting that sees constant heat, and they seated perfectly without any deformation. The -40 to 300°F range gives me real confidence in a demanding environment.

I needed a tough o-ring for a high-temp hydraulic line, and these HNBR ones handle 300°F no problem. The 0.21" cross-section made for a snug fit in the groove, and the five-pack gave me spares.

The 90 durometer hardness gives these HNBR rings a firm feel that handled my compressor fitting without squishing out of place, and the -40°F rating is a bonus for my outdoor setup. Fit the 4.725" bore perfectly on the first try.