Sealing
Replacement technologies
There is some effort aimed at promoting alternative equipment and technology , which is feasible in certain cases but not universally applicable . For example : 1 . Valves used for fluid control can have alternative sealing solutions , such as bellows and emerging technologies , but these often require additional space , new pipework , and flange adjustments . Retrofitting is feasible for some existing valves , but many plants have millions of installed valves , making these alternatives costly and complex .
2 . Replacing gaskets between flanges with pipe welding is a high-risk and costly activity . Properly selecting sealing materials for joints and interfaces is crucial for safety and performance . Incorrect material choices can lead to catastrophic incidents , risking lives and causing environmental , plant , and equipment damage .
3 . Sealless pumps like mag drives are an option but come at a higher cost and have pressure , temperature , and process fluid capabilities limitations .
4 . Fluoroelastomers are essential for sealing high-temperature applications above 150 ° C . Applications exceeding this temperature require fluoroelastomer-based materials , as silicone rubbers cannot handle high pressures and chemical environments . Fluoroelastomers excel in various chemical , heat , and pressure applications , making them the preferred choice .
Conclusion
As the world struggles with addressing PFAS materials , it is essential to note that not all PFAS are hazardous . A singular approach is not sensible for the future , especially with the increasing demand for necessary products containing fluoropolymers and fluoroelastomers , which are proven to be safe . These are necessary and hazard-free products that ensure sealing requirements are met . The US Fluid Sealing Association ( FSA ), alongside the European Fluid Sealing Association ( ESA ), are using the following categorisation approach :
• Not all PFAS are problematic .
• Use of scientific testing methods to secure an acceptable result standard .
• Fluoropolymers and fluoroelastomers are essential to the sealing industry ’ s future .
The FSA and ESA will continue to work with committees , government agencies , and industrial conferences to agree on these three topics .
About the author Michael Wachinger currently serves as the Chesterton Asia Pacific Senior Regional Manager . Michael has 16 years ’ experience in mechanical seal design , installation and applications across various industries including mining , oil and gas , and water . As a Scientific Instrument Maker by trade , Michael appreciates what it takes to help equipment remain operational and leak free , bringing an exceptional level of technical understanding to the elements of process control . Michael also holds a Bachelor of Business in Marketing , giving him an edge in understanding the financial and business decisions that make up technical solutions .
References
1 ) Root T ( 15 June 2021 ). “ Senate bill would ban toxic ‘ forever chemicals ’ in makeup , which new study found are often unlabeled ”. The Washington Post article was Archived from the original on 16 June 2021 and retrieved on 2 July 2021 .
2 ) White Paper data as of 05 / 23
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