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      11 Jun
    Ajay S. Satpute

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Chemical and Process Engineering Resources

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Category: Plant Basics
Question: What is a good rule-of-thumb to determine when a particular application should utilize a metallic gasket rather than a non-metallic gasket?
Keywords: v1i6,gasket,selection,metallic,nonmetallic,non-metallic,temperature,pressure,design,flange,sealing
Answer: As a guideline, check the following values for your application:--English Units--Operating Pressure (psig) x Operating Temp (??F)If this value exceeds 250,000, you should strongly consider a metallic gasket.--Metric Units--Operating Pressure (MPa) x (1.8 x Operating Temp (??C) + 32)If this value exceeds 1,720, you should strongly consider a metallic gasket.Additionally, many people will seldom use non-metallic gaskets above 450 ??C (850 ??F) or above pressures of 8.3 MPa (1200 psi).Reference: Standard Handbook of Plant Engineering, Robert Rosaler