How to install PTFE gaskets to avoid issues such as damage or leakage
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Is there anyone else with the same problem as me? ? ? Did the PTFE gasket get damaged or leak during installation? ? ?
It's important to clarify in your question whether it's a problem with the gasket itself or an installation issue. If leakage occurs as soon as it is installed, consider the issues with the installation method and the quality of the flange. If leakage occurs during operation, consider using gaskets; think about the selection of gaskets as well as bolt pre-tensioning. The use of various adhesives or other bonding agents during the installation of gaskets is highly discouraged. Further exchanges are welcome to analyze the causes of seal failure under such operating conditions.
Just wrap it with a Teflon tape 1–2 more times and that’s it~
Does the standard allow wrapping? If the sealing is not good, could we consider the roughness or flatness of the flange surface? Process the sealing surface after welding it finally?
This post was last edited by xlw180 on 2016-1-4 at 11:15. What I mentioned are just common practices; moreover, the original poster asked about damaged gaskets and leaks. Of course, if high standards are required, then the things you mentioned do need to be taken into consideration.
Do you mean to check the sealing surface of the flange and then carry out some treatment? It’s better to adjust the PTFE flange gasket according to the flange
You’ve explained this in great detail; the gaskets are fine, but this issue occurs with one machine’s operation, while the others are okay
I tried it, and it does seem to have gotten much better
Due to the possible roughness and unevenness of our flange surfaces, especially in the case of enamel pipes, the method of wrapping Teflon gaskets with tape is commonly used for enamel pipes and applications where high sealing standards are required. Raw tape has a certain degree of elasticity, which makes it easier to ensure a tight seal when used for wrapping; it is a material used as an auxiliary sealant.