Regarding the selection of gaskets

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The company recently had an old evaporator repaired; it was a unit with 3 compressors, and the piping was divided into 3 circuits. Since it is a very old unit, no tensioning bolts are used for the connections of the tubes, chamber plates, and sealing plates; without adding sealing gaskets, tightening the bolts around the perimeter will cause a slight arching in the middle section, which can lead to cross-connection of various pipelines. Initially, fluororubber was used for the gasketing between the tube sheets, chamber plates, and end plates. It was used twice, both times during pressure tests, and everything worked fine – there were no leaks or connections between the pipes. However, once the system started operating, it was immediately corroded by the R22 refrigerant and oil inside, which led to leaks. Later, ZW8800 non-asbestos boards were used; due to their lack of elasticity, they would crack immediately when pressure was applied to the middle section. I would like to ask now whether oil-resistant asbestos rubber sheets and polytetrafluoroethylene sheets can be used. Can these two types of sheets, when used as gaskets, possess a relatively low degree of elasticity similar to that of fluororubber, so that they can be compressed after the bolts are tightened to ensure sealing? Or are there any other ways to seal it? Please let me know, thank you!