Selection of mirror pads
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Our factory produces strong alkalis, and the sight glasses used in the concentration evaporators start to leak water and the gaskets become brittle after each heating cycle. What type of gasket would be suitable? The material must not contain magnetic substances or other impurity ions
What material are you using now? Have you tried PTFE gaskets?
Any alkali-resistant material should work; I can’t remember replacing the gaskets on our alkali pipelines
The rubber pad is resistant to alkalis on its own; it might be a temperature issue. The operating temperatures for several commonly used rubber gaskets are as follows: Nitrile rubber gaskets – 51°C to 121°C; Fluororubber gaskets – -30°C to 200°C; Natural rubber gaskets – -57°C to 93°C; Neoprene rubber gaskets – -51°C to 121°C; EPDM rubber gaskets – -57°C to 176°C; Silicone rubber gaskets – -100°C to 300°C. The person who posted the question said that leakage occurs after each cooking process, and the gaskets become brittle. You might want to consider whether the temperature chosen is inappropriate, as high temperatures accelerate aging, resulting in leakage after just one processing cycle :)
Medium (concentration), temperature, pressure, temperature fluctuations, pressure fluctuations. Please complete the above information before we proceed with further discussion