حلقات O من HNBR بقطر داخلي 1.475 بوصة وقطر مقطع 0.21 بوصة | AS568-325 | داش 325 | صلابة 80 (25 / عبوة)

The temperature range on these is spot on for what I needed, and the 80 durometer hardness feels sturdy without being brittle. I've used them around a hot oil line and they've held up fine so far.

Ordered these for a high-temp hydraulic repair and the -40°F to +300°F range gives me real peace of mind. The 80 durometer feels firm but not brittle when I stretched one to check fit. Fit the groove perfectly on the first try, no wrestling needed.

Finally, a dash 325 o-ring that actually seals my pneumatic actuator without that annoying squirm. The 80 durometer feels noticeably stiffer than the standard 70, and the HNBR material handles the heat cycles perfectly.