حلقات O من HNBR بقطر داخلي 4.234" وقطر مقطع 0.139" | AS568-244 | داش 244 | صلابة 80 (14 / عبوة)

The 4.234-inch inner diameter fit perfectly into my hydraulic coupling where standard nitrile would have failed from heat. These are holding up well at around 250°F so far, and the 80 durometer gives just the right feel.

I’ve been using these HNBR o-rings in a high-temp sealing application, and the 80 durometer holds up perfectly without any noticeable wear after a month of cycling up to 300°F. The 4.234" inner diameter fit my flange exactly, which saved me from having to order custom sizes. Great value for the pack

I needed a replacement for a hydraulic seal that kept leaking, and these HNBR o-rings with a 4.234" ID fit perfectly and stopped the drip. The 80 durometer feels firm yet pliable, and they've held up well through temperature swings.