What material O-rings can resist ammonia corrosion?
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The gas is a mixture of acetylene and ammonia, with a pressure of 3.0 MPa and a temperature of around 110°C; it may sometimes contain trace amounts of moisture. . . . I would appreciate some advice from experts: what material should be used for the O-ring?
Ethylene propylene rubber or neoprene or chlorosulfonated polyethylene rubber (CSM)
Master, have you used ethylene-propylene rubber before? How is it working? . . . . We plan to buy EPDM to give it a try
Both EPDM and butyl rubber are suitable; EPDM has superior performance compared to DMEM.
We are liquid ammonia; our temperature is not as high as yours. The effect is okay. A wrapped PTFE rubber ring can also be used. But it’s more expensive.
When designing ammonia pipelines, the focus is on safety and reliability; it doesn’t matter to spend a bit more money. Make sure to use high-quality gaskets, such as those made of PTFE
Simply use NBR material
Nitrile rubber or chlorosulfonated polyethylene rubber seems to be able to withstand temperatures below 60°C only. . . . . . . Can perfluoroether rubber be used?
It is recommended to use fluororubber due to its excellent overall performance
Since the temperature isn’t high, it’s better to choose PTFE.