Can metal spiral wound gaskets with inner rings protect against overpressure? ? ?
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The viscosity reducing system of our installation is often shut down, so some gaskets are easy to leak. The possible reason is that the preload force of the flange is too large due to thermal expansion and contraction, causing the gasket to fail. I heard that there is a metal wound gasket with an inner ring that can prevent the gasket from failing due to excessive preload force. If there is a manufacturer that specializes in producing such gaskets, please comment!
0222-DN-PN This kind of winding point has metal inside and outside. Check it out. Many manufacturers can do it.
This is called an internal reinforcing ring, and there are also external reinforcing rings and internal and external reinforcing rings. Generally speaking, it is better than without reinforcement ring. If leakage occurs due to frequent parking, you can choose a graphite wound gasket. It will be better to tighten it when leaking.
Metal winding gaskets are made by many small workshops in China. You can understand that the inner and outer reinforcing rings play a certain role in improving sealing performance. The cross-sectional shape of the metal winding belt gives the winding gasket a certain elasticity. Together with the inner and outer rings, when the basic gasket (wound part) is compressed, the inner and outer rings are subject to tension and pressure respectively. When the load of the basic gasket decreases, the energy stored in the inner and outer rings is released, improving the resilience of the gasket. Compared with other types, the adaptability to pressure and temperature changes is enhanced. The necessity of secondary confinement is also * * In addition, reducing the inner ring can prevent the gasket pressure loss caused by over-tightening, reducing the gap between the flanges to prevent erosion of the gasket due to fluid eddy currents, and adding an outer ring is conducive to positioning during installation. Answer the original poster's question. In fact, the selection of the inner and outer rings should not only consider the pressure, but also the form of the flange, the medium, etc. One of the functions of the inner ring is as mentioned above. If you have specific problems or require higher-tech sealing, please call 13512131161 directly. Peng's post was last posted by muyinai on 2008-1-8 10:53 Edit ]
Gaskets with inner ring are used in corrosive media.
The solid core of a wound gasket with an inner metal ring acts as a compression terminator and fills the annular space between the flange bore and the inner diameter. This type of gasket can prevent the accumulation of solids in the fluid, reduce turbulence of the process fluid, and reduce corrosion of the flange surface.