Heat exchanger floating head gasket
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For the graphite gaskets used in heat exchanger floating heads, is it necessary to wrap them with PTFE before installation?
It’s better this way; the graphite gasket doesn’t easily come loose when tightened, and it’s easy to remove when taking it apart in the future.
Why not use a PTFE gasket directly?
Tetrafluorine gaskets are generally used at temperatures below 150 degrees
We’ve learned that it seems we don’t have high-temperature heat exchangers~~
The gaskets used for heat exchanger floating heads are generally quite large; if they are not secured with PTFE tape, they can easily come apart with just a slight touch during installation. A large metal wound gasket is very expensive……
This is done as needed; generally, there is no requirement to produce such items. If they end up in pipeline equipment where a high level of cleanliness is required, they will cause contamination. If you are concerned about scattering, use a graphite metal wound gasket with an inner steel ring or an outer steel ring. This type of gasket is resistant to high pressure and high temperatures, making it irreplaceable by PTFE gaskets. Moreover, its sealing is already very good, so additional wrapping is not advisable.
It is best to use a graphite wave-tooth composite gasket
Yes, it’s best to use a graphite wave-tooth composite gasket
Will this situation affect its sealing performance?
Are you saying that this temperature is the designed temperature? Can it be understood that this temperature serves as a threshold – values below it are acceptable, while those above it are not?