It can be used continuously at 316℃ or intermittently at 343℃.

When compress the rubber, elastic fatigue may occur over the time, which will make the sealing force degrade. For example, at high temperature of 204℃, the sealing force of general viton may completely disappear after 200 days, but FFKM can maintain its good sealing force under high temperature for a long time due to its excellent heat stability. (As shown in above figure)