Part of industrial equipment runs in environment with high‑humidity, steam or water vapor. Many customers consult whether AES bio‑soluble ceramic fiber can adapt to such complex moist working conditions.

Dry AES fiber owns stable physical and chemical property. But AES fiber contains soluble alkaline‑earth components. When long‑term immersed in liquid water or continuous high‑temperature water vapor erosion, surface of fiber will gradually be eroded. Long‑time severe damp will cause fiber strength decrease, local pulverization and structural collapse, and finally weaken thermal insulation performance.

If the working condition has occasional short‑term steam impact, AES fiber can work normally with auxiliary protective measures. We suggest adding anti‑vapor coating or refractory protective layer on fiber surface to isolate direct contact between fiber and water vapor. For scenarios with continuous liquid water soaking, AES soluble fiber is not recommended as the primary refractory insulation material.

In daily storage and transportation, keep AES fiber products far from rain and damp ground. Once the goods get soaked by rain, the fiber material will suffer irreversible performance loss and cannot be put into engineering use. When designing high‑humidity kiln projects, fully evaluate steam concentration and select surface protective solution for AES lining in advance.