حلقات O من HNBR | CS 0.21 بوصة × ID 12.475 بوصة | AS568-378 | داش 378 | صلابة 80 (4 / عبوة)

The 0.21" cross-section makes these feel sturdier than the thinner ones I've used before, and the 12.475" ID fit my flange perfectly with a little coaxing. I've got them in a hot oil application and they've held up great so far, no leaking or hardening.

The -40°F to +300°F range is exactly what I needed for my outdoor equipment that sees harsh winters, and the 80 durometer feels sturdier than the cheaper rings I've used before. Fit the groove snugly on the first try, no wrestling required.

These o-rings fit perfectly in my hydraulic cylinder; the 80 durometer feels nice and firm. Sealed the joint with no leaks after a full pressure test.