حلقات O من HNBR بقطر داخلي 2.859 بوصة وقطر مقطع 0.139 بوصة | AS568-233 | داش 233 | صلابة 90 (14 / عبوة)

The 90 durometer is what sold me—these rings are stiff enough to hold up in a hot oil application without deforming. The -40°F rating gives me confidence for winter startup, and the fit on the 2.859" bore was spot on.

Installed these on a hydraulic fitting that sees some real heat. The -40°F lower limit gives me peace of mind for winter use. Fit was snug and perfect out of the bag.

The 90 durometer hardness makes these feel substantial and durable, not flimsy like some cheap seals I’ve handled. The -40°F rating is a huge relief since my equipment sits outside all winter. Already ordered a second pack.