حلقات O من Viton FKM | AS568-913 | داش 913 | صلابة 90 (200 / عبوة)

These o-rings fit perfectly in my high-temp steam application where standard Buna-N ones kept failing. With the 400°F rating, they should handle the heat without any issues.

The 90 durometer feels noticeably firmer than standard 70 o-rings, which should hold up well in my hydraulic application. After a week of use in a hot oil environment, these Viton seals show no sign of swelling or hardening. Exactly what I needed for high-temp reliability.

These are the first o-rings I've bought in bulk where the durometer actually feels like a true 90, they're firm but still seat nicely. The 913 size fits my application perfectly and the 400°F rating gives me confidence for the hot side of the system.