حلقات O من فيتون FKM 0.21" CS × 4.725" ID | AS568-350 | داش 350 | صلابة 75 | بني (10 / عبوة)

The inner diameter was exactly 4.725 inches as listed, so these fit perfectly on my pump flange without any struggle. The brown Viton material feels sturdy, and I'm confident it'll handle the high-temp fluid running through the system.

Used these to replace the original o-rings on my old automotive AC compressor, and the Viton material handles the high heat under the hood perfectly. They sealed on the first try with no leaks, and the 75 durometer feels just right—not too hard or soft.

Installed these on a hydraulic manifold at work and they fit perfectly without any binding. The Viton material held up great against the 300°F oil we're running.