حلقات O-Ring فيتون FKM بمقطع عرضي 0.139 بوصة × قطر داخلي 5.859 بوصة | AS568-257 | داش 257 | قابلة للكشف بالمعادن | صلابة 75 (4 / عبوة)

Finally found o-rings that hold up in high-temp applications without degrading. The 400°F service range is perfect for my engine rebuild, and they fit the AS568-257 spec exactly.

These o-rings handled the high-temp steam cleaning cycle at our plant without any softening. The metal-detectable feature gives us an extra layer of safety in our food processing line.

The dash 257 size fit our 6-inch pipe flange perfectly, and the Viton’s 400°F rating gives me confidence for the hot oil service we run. I’ve inspected all four rings and the metal-detectable feature is a nice safety bonus for food plant duty. These feel dense and solid at 75 durometer, exactly what