PL FLANGE(RF#150), with metal wound gasket
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If it is a small pressure vessel (about 0.03 cubic meters), with a design pressure ranging from full vacuum to 1 MPa, and a design temperature of -25 to 120 degrees Celsius, I would like to ask whether it is acceptable to use a PL FLANGE (RF#150) provided by the flange manufacturer, along with metal-wound gaskets whose sealing material consists of 316L + PTFE. I’m concerned that there might be leakage at the flange under conditions of low temperature and negative pressure; please share your opinions – am I overthinking this?……
1. It can be used; please consider the pressure rating of the gasket, and choose a wound gasket with metal inner and outer rings for this application. 2. “Is it because the individual believes that there might be a risk of flange leakage under conditions of low temperature and negative pressure? PTFE, as a gasket, exhibits creep and cold flow; your concerns are valid. It is recommended to use disc springs to compensate for bolt relaxation and the creep-induced gaps in the gasket, thereby ensuring the sealing performance between the gasket and the flange.” Additionally: Due to the presence of vacuum conditions, it is recommended to choose gaskets from reputable brands with high quality. We welcome further discussions regarding sealing solutions for this device. Thank you
1. It can be used; please consider the pressure rating of the gasket, and choose a wound gasket with metal inner and outer rings for this application. 2. “Is it because the individual believes that there might be a risk of flange leakage under conditions of low temperature and negative pressure? PTFE, as a gasket, exhibits creep and cold flow; your concerns are valid. It is recommended to use disc springs to compensate for bolt relaxation and the creep-induced gaps in the gasket, thereby ensuring the sealing performance between the gasket and the flange.” Additionally: Due to the presence of vacuum conditions, it is recommended to choose gaskets from reputable brands with high quality. We welcome further discussions regarding sealing solutions for this device. Thank you