PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
How to store PTFE gasket
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Industry dynamics
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Release time:
2022-06-28
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The tetrafluoro gasket is a polymer compound made of tetrafluoroethylene. It has excellent chemical stability and corrosion resistance. It is one of the best corrosion-resistant materials in the world today. Except for molten sodium and liquid fluorine, there is no change in boiling in water.
If the PTFE gasket has sufficient elasticity to make the working sealing pressure on the sealing surface always greater than the working pressure of the medium and the working pressure, the sealing surface will maintain a good sealing state. The necessary conditions for forced sealing are medium and working pressure. Under the action of force, the sealing surface can still maintain a certain pressing force.
When the PTFE gasket is forced to seal, the medium pressure always tends to reduce the specific pressure of the preload seal and reduce the sealing performance. The typical structure of the forced sealing PTFE gasket includes flat gasket, wound gasket and toothed gasket, which are usually used for low pressure, medium pressure and medium and small diameter valves.
When sealing PTFE gaskets, it is necessary to meet its sealing conditions, so as to better maintain PTFE gaskets and extend their service life.
The working conditions of the PTFE gasket seal are relatively stubborn, with large thermal deformation, often subject to vibration, impact, improper installation, excessive tightening force, repeated applications, shrinkage deformation, internal stress concentration, damage exceeding fatigue strength, data aging, conversion, etc. Will cause damage and leakage. This kind of leakage has great influence and harm, so prevention must be strengthened.
Teflon gaskets are suitable for sealing parts with drastic temperature and pressure changes. They are flange-connected static sealing elements, such as pipes, valves, pumps, heat exchangers, towers, manholes and hand holes. By changing the tension of the wound steel strip, the density (hardness) of the wound gasket can be changed to meet the needs of various applications. Widely used in petrochemical, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy, aerospace and other industries.
Teflon gaskets are widely used and are generally mainly used in the above-mentioned fields. Small partners who need PTFE gaskets can contact us.
Key words:
Teflon gasket
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